diff --git a/deploy.sh b/deploy.sh index 017e4ab..5ab6311 100644 --- a/deploy.sh +++ b/deploy.sh @@ -21,5 +21,6 @@ git commit -m 'deploy' # 如果发布到 https://.github.io/ git push -f =git@github.com:OutisLi/Blog.git master:gh-pages +# git subtree push --prefix=dist origin gh-pages cd - \ No newline at end of file diff --git a/docs/.vuepress/dist/404.html b/docs/.vuepress/dist/404.html index 9694322..9037314 100644 --- a/docs/.vuepress/dist/404.html +++ b/docs/.vuepress/dist/404.html @@ -8,13 +8,13 @@ - + -

404

That's a Four-Oh-Four.
+ - + diff --git "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225.html" "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225.html" index f81f32d..c1a5906 100644 --- "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225.html" +++ "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225.html" @@ -8,7 +8,7 @@ - + @@ -89,6 +89,6 @@ →

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/1.Verilog \345\237\272\347\241\200\350\257\255\346\263\225.html" "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/1.Verilog \345\237\272\347\241\200\350\257\255\346\263\225.html" index cf49ed6..f26f095 100644 --- "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/1.Verilog \345\237\272\347\241\200\350\257\255\346\263\225.html" +++ "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/1.Verilog \345\237\272\347\241\200\350\257\255\346\263\225.html" @@ -8,7 +8,7 @@ - + @@ -102,6 +102,6 @@ →

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/10.Verilog \345\244\232\350\267\257\345\210\206\346\224\257\350\257\255\345\217\245.html" "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/10.Verilog \345\244\232\350\267\257\345\210\206\346\224\257\350\257\255\345\217\245.html" index 40a4edb..6999363 100644 --- "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/10.Verilog \345\244\232\350\267\257\345\210\206\346\224\257\350\257\255\345\217\245.html" +++ "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/10.Verilog \345\244\232\350\267\257\345\210\206\346\224\257\350\257\255\345\217\245.html" @@ -8,7 +8,7 @@ - + @@ -148,6 +148,6 @@ →

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2.Verilog \346\225\260\345\200\274\350\241\250\347\244\272.html" "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2.Verilog \346\225\260\345\200\274\350\241\250\347\244\272.html" index 6cbc8a7..65ef8f7 100644 --- "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2.Verilog \346\225\260\345\200\274\350\241\250\347\244\272.html" +++ "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2.Verilog \346\225\260\345\200\274\350\241\250\347\244\272.html" @@ -8,7 +8,7 @@ - + @@ -112,6 +112,6 @@ →

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2023.11.15-Vivado.html" "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2023.11.15-Vivado.html" index dcd311a..224c119 100644 --- "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2023.11.15-Vivado.html" +++ "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2023.11.15-Vivado.html" @@ -8,7 +8,7 @@ - + @@ -111,6 +111,6 @@ →

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2023.11.16-\351\230\273\345\241\236\344\270\216\351\235\236\351\230\273\345\241\236\350\265\213\345\200\274.html" "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2023.11.16-\351\230\273\345\241\236\344\270\216\351\235\236\351\230\273\345\241\236\350\265\213\345\200\274.html" index 2ff53bc..00a1c18 100644 --- "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2023.11.16-\351\230\273\345\241\236\344\270\216\351\235\236\351\230\273\345\241\236\350\265\213\345\200\274.html" +++ "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/2023.11.16-\351\230\273\345\241\236\344\270\216\351\235\236\351\230\273\345\241\236\350\265\213\345\200\274.html" @@ -8,7 +8,7 @@ - + @@ -97,6 +97,6 @@ →

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/3.Verilog \346\225\260\346\215\256\347\261\273\345\236\213.html" "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/3.Verilog \346\225\260\346\215\256\347\261\273\345\236\213.html" index dbfc13b..39e640a 100644 --- "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/3.Verilog \346\225\260\346\215\256\347\261\273\345\236\213.html" +++ "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/3.Verilog \346\225\260\346\215\256\347\261\273\345\236\213.html" @@ -8,7 +8,7 @@ - + @@ -171,6 +171,6 @@ →

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/4.Verilog \350\241\250\350\276\276\345\274\217.html" "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/4.Verilog \350\241\250\350\276\276\345\274\217.html" index 342568e..687ac5e 100644 --- "a/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/4.Verilog \350\241\250\350\276\276\345\274\217.html" +++ "b/docs/.vuepress/dist/Chip/Chip/2023.11.07-Verilog\350\257\255\346\263\225/4.Verilog \350\241\250\350\276\276\345\274\217.html" @@ -8,7 +8,7 @@ - + @@ -201,6 +201,6 @@

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel.html index 9de1771..e84f573 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel.html @@ -8,7 +8,7 @@ - + @@ -93,6 +93,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.21-1 Introduction to Scala.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.21-1 Introduction to Scala.html index 937f7f1..167e4b1 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.21-1 Introduction to Scala.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.21-1 Introduction to Scala.html @@ -8,7 +8,7 @@ - + @@ -233,6 +233,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.23-2.1 First Chisel Module.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.23-2.1 First Chisel Module.html index 3cbc148..c37f79c 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.23-2.1 First Chisel Module.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.23-2.1 First Chisel Module.html @@ -8,7 +8,7 @@ - + @@ -204,6 +204,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.24-2.2 Combinational Logic.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.24-2.2 Combinational Logic.html index a7efd23..af0c4b4 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.24-2.2 Combinational Logic.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.24-2.2 Combinational Logic.html @@ -8,7 +8,7 @@ - + @@ -261,6 +261,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.25-2.3 Control Flow.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.25-2.3 Control Flow.html index e0fd65b..4859bfd 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.25-2.3 Control Flow.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.25-2.3 Control Flow.html @@ -8,7 +8,7 @@ - + @@ -224,6 +224,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.26-2.4 Sequential Logic.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.26-2.4 Sequential Logic.html index 84468bd..28acdc1 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.26-2.4 Sequential Logic.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.26-2.4 Sequential Logic.html @@ -8,7 +8,7 @@ - + @@ -236,6 +236,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.28-2.5 FIR Filter.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.28-2.5 FIR Filter.html index 641db79..be8f12f 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.28-2.5 FIR Filter.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.28-2.5 FIR Filter.html @@ -8,7 +8,7 @@ - + @@ -132,6 +132,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.29-2.6 More on ChiselTest.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.29-2.6 More on ChiselTest.html index fe3cbd8..278d9da 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.29-2.6 More on ChiselTest.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.02.29-2.6 More on ChiselTest.html @@ -8,7 +8,7 @@ - + @@ -127,6 +127,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.01-3.1 Generators Parameters.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.01-3.1 Generators Parameters.html index 65ccf81..b601612 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.01-3.1 Generators Parameters.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.01-3.1 Generators Parameters.html @@ -8,7 +8,7 @@ - + @@ -348,6 +348,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.03-3.2 Generators Collections.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.03-3.2 Generators Collections.html index cf0da1a..4956fef 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.03-3.2 Generators Collections.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.03-3.2 Generators Collections.html @@ -8,7 +8,7 @@ - + @@ -232,6 +232,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.04-3.3 Interlude Chisel Standard Library.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.04-3.3 Interlude Chisel Standard Library.html index 7df0cbe..b40d86e 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.04-3.3 Interlude Chisel Standard Library.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.04-3.3 Interlude Chisel Standard Library.html @@ -8,7 +8,7 @@ - + @@ -429,6 +429,6 @@ →

- + diff --git a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.05-3.4 Higher-Order Functions.html b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.05-3.4 Higher-Order Functions.html index 5ac6d99..c45d06e 100644 --- a/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.05-3.4 Higher-Order Functions.html +++ b/docs/.vuepress/dist/Chip/Chip/2024.02.21-Chisel/2024.03.05-3.4 Higher-Order Functions.html @@ -8,7 +8,7 @@ - + @@ -156,6 +156,6 @@

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/\344\270\200\347\224\237\344\270\200\350\212\257\350\256\241\345\210\222.html" "b/docs/.vuepress/dist/Chip/Chip/\344\270\200\347\224\237\344\270\200\350\212\257\350\256\241\345\210\222.html" index 7fa1046..593729a 100644 --- "a/docs/.vuepress/dist/Chip/Chip/\344\270\200\347\224\237\344\270\200\350\212\257\350\256\241\345\210\222.html" +++ "b/docs/.vuepress/dist/Chip/Chip/\344\270\200\347\224\237\344\270\200\350\212\257\350\256\241\345\210\222.html" @@ -8,7 +8,7 @@ - + @@ -89,6 +89,6 @@

- + diff --git "a/docs/.vuepress/dist/Chip/Chip/\344\270\200\347\224\237\344\270\200\350\212\257\350\256\241\345\210\222/\351\242\204\345\255\246\344\271\240\351\230\266\346\256\265.html" "b/docs/.vuepress/dist/Chip/Chip/\344\270\200\347\224\237\344\270\200\350\212\257\350\256\241\345\210\222/\351\242\204\345\255\246\344\271\240\351\230\266\346\256\265.html" index c96069b..cd1f201 100644 --- "a/docs/.vuepress/dist/Chip/Chip/\344\270\200\347\224\237\344\270\200\350\212\257\350\256\241\345\210\222/\351\242\204\345\255\246\344\271\240\351\230\266\346\256\265.html" +++ "b/docs/.vuepress/dist/Chip/Chip/\344\270\200\347\224\237\344\270\200\350\212\257\350\256\241\345\210\222/\351\242\204\345\255\246\344\271\240\351\230\266\346\256\265.html" @@ -8,7 +8,7 @@ - + @@ -85,6 +85,6 @@
External (opens new window)

# 预学习阶段

- + diff --git a/docs/.vuepress/dist/Chip/index.html b/docs/.vuepress/dist/Chip/index.html index 8700b2f..ee961a6 100644 --- a/docs/.vuepress/dist/Chip/index.html +++ b/docs/.vuepress/dist/Chip/index.html @@ -8,7 +8,7 @@ - + @@ -85,6 +85,6 @@
External (opens new window)

# SoC Design

# 一生一芯计划

# 2023.11.07-Verilog语法

# 2024.02.21-Chisel

- + diff --git "a/docs/.vuepress/dist/LeetCode/LeetCode/2024 02 22-752 \346\211\223\345\274\200\350\275\254\347\233\230\351\224\201\357\274\210BFS\357\274\211 abab666d7cbf48d2b1656f11166d33f2.html" "b/docs/.vuepress/dist/LeetCode/LeetCode/2024 02 22-752 \346\211\223\345\274\200\350\275\254\347\233\230\351\224\201\357\274\210BFS\357\274\211 abab666d7cbf48d2b1656f11166d33f2.html" index 152b9a4..2fe6db2 100644 --- "a/docs/.vuepress/dist/LeetCode/LeetCode/2024 02 22-752 \346\211\223\345\274\200\350\275\254\347\233\230\351\224\201\357\274\210BFS\357\274\211 abab666d7cbf48d2b1656f11166d33f2.html" +++ "b/docs/.vuepress/dist/LeetCode/LeetCode/2024 02 22-752 \346\211\223\345\274\200\350\275\254\347\233\230\351\224\201\357\274\210BFS\357\274\211 abab666d7cbf48d2b1656f11166d33f2.html" @@ -8,7 +8,7 @@ - + @@ -265,6 +265,6 @@ →

- + diff --git "a/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab.html" "b/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab.html" index ba2c0e6..8718fa4 100644 --- "a/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab.html" +++ "b/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab.html" @@ -8,7 +8,7 @@ - + @@ -89,6 +89,6 @@

- + diff --git "a/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab/2024 03 05-104 \344\272\214\345\217\211\346\240\221\347\232\204\346\234\200\345\244\247\346\267\261\345\272\246 c6649929175d46038db921b552f2a235.html" "b/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab/2024 03 05-104 \344\272\214\345\217\211\346\240\221\347\232\204\346\234\200\345\244\247\346\267\261\345\272\246 c6649929175d46038db921b552f2a235.html" index 6b19b26..e9aa11b 100644 --- "a/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab/2024 03 05-104 \344\272\214\345\217\211\346\240\221\347\232\204\346\234\200\345\244\247\346\267\261\345\272\246 c6649929175d46038db921b552f2a235.html" +++ "b/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab/2024 03 05-104 \344\272\214\345\217\211\346\240\221\347\232\204\346\234\200\345\244\247\346\267\261\345\272\246 c6649929175d46038db921b552f2a235.html" @@ -8,7 +8,7 @@ - + @@ -184,6 +184,6 @@ →

- + diff --git "a/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab/2024 03 05-543 \344\272\214\345\217\211\346\240\221\347\232\204\347\233\264\345\276\204 9db6d046b0954b45b96ca749922a2ece.html" "b/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab/2024 03 05-543 \344\272\214\345\217\211\346\240\221\347\232\204\347\233\264\345\276\204 9db6d046b0954b45b96ca749922a2ece.html" index 7115c6e..6900cee 100644 --- "a/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab/2024 03 05-543 \344\272\214\345\217\211\346\240\221\347\232\204\347\233\264\345\276\204 9db6d046b0954b45b96ca749922a2ece.html" +++ "b/docs/.vuepress/dist/LeetCode/LeetCode/2024 03 05-\344\272\214\345\217\211\346\240\221 6b922d49986f4faf85bc9106cd12c5ab/2024 03 05-543 \344\272\214\345\217\211\346\240\221\347\232\204\347\233\264\345\276\204 9db6d046b0954b45b96ca749922a2ece.html" @@ -8,7 +8,7 @@ - + @@ -170,6 +170,6 @@

- + diff --git a/docs/.vuepress/dist/LeetCode/index.html b/docs/.vuepress/dist/LeetCode/index.html index 8fc3490..eb281fb 100644 --- a/docs/.vuepress/dist/LeetCode/index.html +++ b/docs/.vuepress/dist/LeetCode/index.html @@ -8,7 +8,7 @@ - + @@ -85,6 +85,6 @@
External (opens new window)

# LeetCode

# 2024.02.22-752.打开转盘锁（BFS）

# 2024.03.05-二叉树

- + diff --git a/docs/.vuepress/dist/about/index.html b/docs/.vuepress/dist/about/index.html index 5b193ce..ed34a61 100644 --- a/docs/.vuepress/dist/about/index.html +++ b/docs/.vuepress/dist/about/index.html @@ -8,7 +8,7 @@ - + @@ -85,6 +85,6 @@
External (opens new window)

# Helloworld

- + diff --git a/docs/.vuepress/dist/assets/js/22.8d5111d9.js b/docs/.vuepress/dist/assets/js/22.62284270.js similarity index 95% rename from docs/.vuepress/dist/assets/js/22.8d5111d9.js rename to docs/.vuepress/dist/assets/js/22.62284270.js index e445015..bbac5b3 100644 --- a/docs/.vuepress/dist/assets/js/22.8d5111d9.js +++ b/docs/.vuepress/dist/assets/js/22.62284270.js @@ -1 +1 @@ -(window.webpackJsonp=window.webpackJsonp||[]).push([[22],{304:function(t,i,r){"use strict";r.r(i);var o=r(14),e=Object(o.a)({},(function(){var t=this,i=t._self._c;return i("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[i("h1",{attrs:{id:"_2023-11-07-verilog语法"}},[i("a",{staticClass:"header-anchor",attrs:{href:"#_2023-11-07-verilog语法"}},[t._v("#")]),t._v(" 2023.11.07-Verilog语法")]),t._v(" "),i("p",[i("RouterLink",{attrs:{to:"/Chip/Chip/2023.11.07-Verilog语法/1.Verilog 基础语法.html"}},[t._v("1. 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operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("input")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" CLK"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//CLK 与 clk是 2 个不同的标识符*")]),t._v("\n")])])])])}),[],!1,null,null,null);s.default=e.exports}}]); \ No newline at end of file diff --git a/docs/.vuepress/dist/assets/js/25.1360c032.js b/docs/.vuepress/dist/assets/js/25.8fb27fa6.js similarity index 99% rename from docs/.vuepress/dist/assets/js/25.1360c032.js rename to docs/.vuepress/dist/assets/js/25.8fb27fa6.js index b50e9ed..90e9b44 100644 --- a/docs/.vuepress/dist/assets/js/25.1360c032.js +++ b/docs/.vuepress/dist/assets/js/25.8fb27fa6.js @@ -1 +1 @@ -(window.webpackJsonp=window.webpackJsonp||[]).push([[25],{305:function(s,t,a){"use strict";a.r(t);var r=a(14),e=Object(r.a)({},(function(){var s=this,t=s._self._c;return t("ContentSlotsDistributor",{attrs:{"slot-key":s.$parent.slotKey}},[t("h1",{attrs:{id:"_2-verilog-数值表示"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#_2-verilog-数值表示"}},[s._v("#")]),s._v(" 2. 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"),t("p",[s._v("一般直接写数字时，默认为十进制表示，例如下面的 3 种写法是等效的：")]),s._v(" "),t("div",{staticClass:"language-verilog extra-class"},[t("pre",{pre:!0,attrs:{class:"language-verilog"}},[t("code",[s._v("counter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("'d100")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("*")]),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("//一般会根据编译器自动分频位宽，常见的为32bit*")]),s._v("\ncounter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("100")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\ncounter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("32'h64")]),t("span",{pre:!0,attrs:{class:"token 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operator"}},[s._v("**")]),s._v("\n")])])])])}),[],!1,null,null,null);t.default=e.exports}}]); \ No newline at end of file +(window.webpackJsonp=window.webpackJsonp||[]).push([[25],{304:function(s,t,a){"use strict";a.r(t);var r=a(14),e=Object(r.a)({},(function(){var s=this,t=s._self._c;return t("ContentSlotsDistributor",{attrs:{"slot-key":s.$parent.slotKey}},[t("h1",{attrs:{id:"_2-verilog-数值表示"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#_2-verilog-数值表示"}},[s._v("#")]),s._v(" 2. Verilog 数值表示")]),s._v(" "),t("h2",{attrs:{id:"数值种类"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#数值种类"}},[s._v("#")]),s._v(" "),t("strong",[s._v("数值种类")])]),s._v(" "),t("p",[s._v("Verilog HDL 有下列四种基本的值来表示硬件电路中的电平逻辑：")]),s._v(" "),t("ul",[t("li",[s._v('0：逻辑 0 或 "假"')]),s._v(" "),t("li",[s._v('1：逻辑 1 或 "真"')]),s._v(" "),t("li",[s._v("x 或 X：未知")]),s._v(" "),t("li",[s._v("z 或 Z：高阻")])]),s._v(" "),t("p",[t("strong",[t("code",[s._v("x")])]),s._v(" 意味着信号数值的不确定，即在实际电路里，信号可能为 1，也可能为 0。")]),s._v(" "),t("p",[t("strong",[t("code",[s._v("z")])]),s._v(" 意味着信号处于高阻状态，常见于信号（input, reg）没有驱动时的逻辑结果。例如一个 pad 的 input 呈现高阻状态时，其逻辑值和上下拉的状态有关系。上拉则逻辑值为 1，下拉则为 0 。")]),s._v(" "),t("h2",{attrs:{id:"整数数值表示方法"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#整数数值表示方法"}},[s._v("#")]),s._v(" "),t("strong",[s._v("整数数值表示方法")])]),s._v(" "),t("p",[s._v("数字声明时，合法的基数格式有 4 中，包括：十进制('d 或 'D)，十六进制('h 或 'H)，二进制（'b 或 'B），八进制（'o 或 'O）。数值可指明位宽，也可不指明位宽。")]),s._v(" "),t("h3",{attrs:{id:"指明位宽"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#指明位宽"}},[s._v("#")]),s._v(" "),t("strong",[s._v("指明位宽：")])]),s._v(" "),t("div",{staticClass:"language-verilog extra-class"},[t("pre",{pre:!0,attrs:{class:"language-verilog"}},[t("code",[t("span",{pre:!0,attrs:{class:"token number"}},[s._v("4'b1011")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("*")]),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 4bit 数值*")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("32'h3022_c0de")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("*")]),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 32bit 的数值 一个16进制的数需要4bit来表示*")]),s._v("\n")])])]),t("p",[s._v("其中，下划线 "),t("strong",[t("code",[s._v("_")])]),s._v(" 是为了增强代码的可读性。")]),s._v(" "),t("h3",{attrs:{id:"不指明位宽"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#不指明位宽"}},[s._v("#")]),s._v(" "),t("strong",[s._v("不指明位宽:")])]),s._v(" "),t("p",[s._v("一般直接写数字时，默认为十进制表示，例如下面的 3 种写法是等效的：")]),s._v(" "),t("div",{staticClass:"language-verilog extra-class"},[t("pre",{pre:!0,attrs:{class:"language-verilog"}},[t("code",[s._v("counter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("'d100")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("*")]),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("//一般会根据编译器自动分频位宽，常见的为32bit*")]),s._v("\ncounter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("100")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\ncounter "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("32'h64")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n")])])]),t("h3",{attrs:{id:"负数表示"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#负数表示"}},[s._v("#")]),s._v(" "),t("strong",[s._v("负数表示")])]),s._v(" "),t("p",[s._v("通常在表示位宽的数字前面加一个减号来表示负数。例如：")]),s._v(" "),t("div",{staticClass:"language-verilog extra-class"},[t("pre",{pre:!0,attrs:{class:"language-verilog"}},[t("code",[t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("-")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("6'd15")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("-")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("15")]),s._v("\n")])])]),t("ul",[t("li",[s._v("15 在 5 位二进制中的形式为 5'b10001, 在 6 位二进制中的形式为 6'b11_0001。")])]),s._v(" "),t("p",[s._v("需要注意的是，减号放在基数和数字之间是非法的，例如下面的表示方法是错误的：")]),s._v(" "),t("div",{staticClass:"language-verilog extra-class"},[t("pre",{pre:!0,attrs:{class:"language-verilog"}},[t("code",[t("span",{pre:!0,attrs:{class:"token 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number"}},[s._v("0.001")]),s._v("\n")])])]),t("h3",{attrs:{id:"科学计数法"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#科学计数法"}},[s._v("#")]),s._v(" "),t("strong",[s._v("科学计数法：")])]),s._v(" "),t("div",{staticClass:"language-verilog extra-class"},[t("pre",{pre:!0,attrs:{class:"language-verilog"}},[t("code",[t("span",{pre:!0,attrs:{class:"token number"}},[s._v("1.2e4")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("//大小为12000")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("1_0001e4")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("//大小为100010000")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("1E-3")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token comment"}},[s._v("//大小为0.001")]),s._v("\n")])])]),t("h2",{attrs:{id:"字符串表示方法"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#字符串表示方法"}},[s._v("#")]),s._v(" "),t("strong",[s._v("字符串表示方法")])]),s._v(" "),t("p",[s._v('字符串是由双引号包起来的字符队列。字符串不能多行书写，即字符串中不能包含回车符。Verilog 将字符串当做一系列的单字节 ASCII 字符队列。例如，为存储字符串 "www.runoob.com", 需要 14*8bit 的存储单元。例如：')]),s._v(" "),t("div",{staticClass:"language-verilog extra-class"},[t("pre",{pre:!0,attrs:{class:"language-verilog"}},[t("code",[t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("**")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("reg")]),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("**")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("[")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("0")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(":")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("14")]),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("*")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("8")]),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("-")]),t("span",{pre:!0,attrs:{class:"token number"}},[s._v("1")]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("]")]),s._v(" str "),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("**")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("initial")]),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("**")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("**")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("begin")]),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("**")]),s._v(" \n\t\t\tstr "),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("=")]),s._v(" "),t("span",{pre:!0,attrs:{class:"token string"}},[s._v('"www.runoob.com"')]),t("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n"),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("**")]),t("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("end")]),t("span",{pre:!0,attrs:{class:"token operator"}},[s._v("**")]),s._v("\n")])])])])}),[],!1,null,null,null);t.default=e.exports}}]); \ No newline at end of file diff --git a/docs/.vuepress/dist/assets/js/26.e90941cf.js b/docs/.vuepress/dist/assets/js/26.9fcc91af.js similarity index 99% rename from docs/.vuepress/dist/assets/js/26.e90941cf.js rename to docs/.vuepress/dist/assets/js/26.9fcc91af.js index 86cdd34..cbcd286 100644 --- a/docs/.vuepress/dist/assets/js/26.e90941cf.js +++ b/docs/.vuepress/dist/assets/js/26.9fcc91af.js @@ -1 +1 @@ -(window.webpackJsonp=window.webpackJsonp||[]).push([[26],{308:function(v,_,l){"use strict";l.r(_);var i=l(14),s=Object(i.a)({},(function(){var v=this,_=v._self._c;return _("ContentSlotsDistributor",{attrs:{"slot-key":v.$parent.slotKey}},[_("h1",{attrs:{id:"_2023-11-15-vivado"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#_2023-11-15-vivado"}},[v._v("#")]),v._v(" 2023.11.15-Vivado")]),v._v(" "),_("h2",{attrs:{id:"_1-rtl-schematic-synthesis-schematic"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#_1-rtl-schematic-synthesis-schematic"}},[v._v("#")]),v._v(" 1. RTL Schematic & Synthesis Schematic")]),v._v(" "),_("p",[v._v("在 Vivado 或类似的 FPGA 开发环境中，您会遇到 RTL (Register Transfer Level) 分析中的 Schematic 和 Synthesis 过程中的 Schematic。它们虽然看起来相似，但代表了不同阶段的电路设计和功能。")]),v._v(" "),_("ol",[_("li",[_("p",[_("strong",[v._v("RTL Analysis Schematic")]),v._v(":")]),v._v(" "),_("ul",[_("li",[v._v("这个 Schematic 是您用硬件描述语言（如 Verilog）编写的代码的直接可视化表示。")]),v._v(" "),_("li",[v._v("它展示了代码中定义的模块、它们的互联以及信号流。")]),v._v(" "),_("li",[v._v("RTL Schematic 重点在于逻辑功能的实现，而不是实际硬件如何实现这些功能。它更多地表示逻辑结构而非物理结构。")]),v._v(" "),_("li",[v._v("这是设计验证的早期阶段，您可以在这里检查逻辑错误或结构问题。")])]),v._v(" "),_("p",[_("img",{attrs:{src:"2023%2011%2015-Vivado%20f0f425f653cf4e13826fe8e5e4dc86ef/Untitled.png",alt:"Untitled"}})])]),v._v(" "),_("li",[_("p",[_("strong",[v._v("Synthesis Schematic")]),v._v(":")]),v._v(" "),_("ul",[_("li",[v._v("经过综合后的 Schematic 是将 RTL 设计转换为实际 FPGA 内部资源（如查找表（LUTs）、寄存器和逻辑单元）的表示。")]),v._v(" "),_("li",[v._v("这个过程涉及优化、逻辑最小化、资源分配和时序分析。")]),v._v(" "),_("li",[v._v("Synthesis Schematic 展示了设计如何映射到 FPGA 的实际硬件上，包括使用的具体资源和连接。")]),v._v(" "),_("li",[v._v("这是设计流程的后期阶段，您可以在这里优化性能、资源使用和满足时序要求。")])]),v._v(" "),_("p",[_("img",{attrs:{src:"2023%2011%2015-Vivado%20f0f425f653cf4e13826fe8e5e4dc86ef/Untitled%201.png",alt:"Untitled"}})])])]),v._v(" "),_("p",[v._v("总结来说，RTL Schematic 关注于逻辑设计的表示，而 Synthesis Schematic 则关注于该设计在 FPGA 上的物理实现。理解两者的区别对于 FPGA 开发至关重要，因为这影响着您如何优化设计以及解决可能出现的问题。")]),v._v(" "),_("h2",{attrs:{id:"_2-project汇总中的lut-ff-io-bufg"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#_2-project汇总中的lut-ff-io-bufg"}},[v._v("#")]),v._v(" 2. Project汇总中的LUT，FF，IO，BUFG")]),v._v(" "),_("p",[v._v("在 Vivado 或类似的 FPGA 设计项目中，您会遇到几个关键的资源指标，如 LUT、FF、IO 和 BUFG。这些指标是 FPGA 设计和资源利用的重要部分。下面是每个术语的简要解释：")]),v._v(" "),_("ol",[_("li",[_("strong",[v._v("LUT (Look-Up Table)")]),v._v(":\n"),_("ul",[_("li",[v._v("LUT 是 FPGA 中实现逻辑功能的基本单元。")]),v._v(" "),_("li",[v._v("它本质上是一个可编程的真值表，可以配置为执行各种逻辑操作（如 AND、OR、NOT、XOR 等）。")]),v._v(" "),_("li",[v._v("LUT 的大小和数量是 FPGA 性能和复杂性的关键决定因素。在设计中，LUT 的使用量通常是衡量设计复杂度的一个重要指标。")])])]),v._v(" "),_("li",[_("strong",[v._v("FF (Flip-Flop)")]),v._v(":\n"),_("ul",[_("li",[v._v("FF 是用于存储数据的基本存储元件，通常用于实现寄存器、计数器等。")]),v._v(" "),_("li",[v._v("在 FPGA 中，FF 通常与 LUT 配对使用，以实现存储和逻辑功能的组合。")]),v._v(" "),_("li",[v._v("FF 的数量通常表明了设计中的数据存储需求和时序复杂度。")])])]),v._v(" "),_("li",[_("strong",[v._v("IO (Input/Output Ports)")]),v._v(":\n"),_("ul",[_("li",[v._v("这些是 FPGA 与外界通信的端口，包括输入端口和输出端口。")]),v._v(" "),_("li",[v._v("IO 的数量和类型（如单端或差分）取决于 FPGA 的物理特性和您的设计需求。")]),v._v(" "),_("li",[v._v("在设计中，您需要确保 FPGA 有足够的 IO 端口来满足您的外部连接需求。")])])]),v._v(" "),_("li",[_("strong",[v._v("BUFG (Buffered Global Clock)")]),v._v(":\n"),_("ul",[_("li",[v._v("BUFG 是一种专用的时钟缓冲器，用于分配全局时钟信号。")]),v._v(" "),_("li",[v._v("在复杂的 FPGA 设计中，确保时钟信号的稳定和同步是非常重要的。BUFG 能够在整个芯片上稳定地分配时钟信号。")]),v._v(" "),_("li",[v._v("BUFG 的使用和配置对于实现有效的时钟管理和避免时钟偏移非常关键。")])])])]),v._v(" "),_("p",[v._v("理解这些资源对于 FPGA 设计至关重要，因为它们直接影响您的设计能否在特定的 FPGA 上实现，以及该设计的性能和效率。在 Vivado 的项目汇总中，这些参数帮助您评估设计对 FPGA 资源的利用情况。")]),v._v(" "),_("h2",{attrs:{id:"_3-fpga的组成构造"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#_3-fpga的组成构造"}},[v._v("#")]),v._v(" 3. FPGA的组成构造")]),v._v(" "),_("p",[v._v("FPGA (Field-Programmable Gate Array) 是一种高度灵活的可编程硬件，它由多个不同的元件构成，共同实现复杂的数字逻辑功能。以下是 FPGA 内部主要组成部分的概述：")]),v._v(" "),_("ol",[_("li",[_("strong",[v._v("查找表 (LUTs)")]),v._v(":\n"),_("ul",[_("li",[v._v("如您所述，LUTs 是 FPGA 的核心，用于实现基本的逻辑功能。它们通过存储预定义的输出值来模拟逻辑门的行为。")]),v._v(" "),_("li",[v._v("LUTs 可以通过编程来实现简单的逻辑操作（如 AND、OR、NOT）或更复杂的组合逻辑。")])])]),v._v(" "),_("li",[_("strong",[v._v("多路选择器 (MUXes)")]),v._v(":\n"),_("ul",[_("li",[v._v("虽然在传统的逻辑电路中，MUXes 是通过逻辑门实现的，但在 FPGA 中，它们通常与 LUTs 结合或独立实现。")]),v._v(" "),_("li",[v._v("MUXes 在 FPGA 设计中用于根据控制信号选择不同的输入路径，这对于创建复杂的数据路径和逻辑结构至关重要。")])])]),v._v(" "),_("li",[_("strong",[v._v("触发器 (Flip-Flops)")]),v._v(":\n"),_("ul",[_("li",[v._v("Flip-Flops 用于存储信息，是实现时序逻辑的关键元件。它们通常与 LUTs 配对，以构成可存储状态的逻辑单元。")])])]),v._v(" "),_("li",[_("strong",[v._v("编程互联资源 (Programmable Interconnects)")]),v._v(":\n"),_("ul",[_("li",[v._v("这些是连接 FPGA 内部不同部件的路径。它们可以被编程以形成任何所需的逻辑网络，从而将 LUTs、Flip-Flops 和其他资源连接起来。")])])]),v._v(" "),_("li",[_("strong",[v._v("输入/输出块 (I/O Blocks)")]),v._v(":\n"),_("ul",[_("li",[v._v("这些块连接 FPGA 和外部世界，提供数据输入和输出功能。它们可以配置为不同类型的接口（如单端或差分）。")])])]),v._v(" "),_("li",[_("strong",[v._v("专用硬件资源")]),v._v(":\n"),_("ul",[_("li",[v._v("许多 FPGA 还包含专用的硬件资源，如 DSP (数字信号处理) 块、内存控制器、时钟管理模块（如 PLLs 和 BUFGs），以及其他特定功能块。")])])]),v._v(" "),_("li",[_("strong",[v._v("存储资源")]),v._v(":\n"),_("ul",[_("li",[v._v("包括 RAM 块 (Block RAM) 或更小的存储单元，用于数据存储和缓冲。")])])])]),v._v(" "),_("p",[v._v("FPGA 的关键优势在于其高度可编程性和灵活性。设计师可以通过编程定义 LUTs、MUXes、Flip-Flops 以及互连的配置和组合方式，从而在没有物理改动硬件的情况下实现几乎任何数字逻辑设计。这种灵活性使得 FPGA 在快速原型制作、定制硬件加速和可重配置系统中非常有价值。")]),v._v(" "),_("p",[v._v("FPGA (Field-Programmable Gate Array) 是一种高度灵活的可编程硬件，它由多个不同的元件构成，共同实现复杂的数字逻辑功能。以下是 FPGA 内部主要组成部分的概述：")]),v._v(" "),_("ol",[_("li",[_("strong",[v._v("查找表 (LUTs)")]),v._v(":\n"),_("ul",[_("li",[v._v("如您所述，LUTs 是 FPGA 的核心，用于实现基本的逻辑功能。它们通过存储预定义的输出值来模拟逻辑门的行为。")]),v._v(" "),_("li",[v._v("LUTs 可以通过编程来实现简单的逻辑操作（如 AND、OR、NOT）或更复杂的组合逻辑。")])])]),v._v(" "),_("li",[_("strong",[v._v("多路选择器 (MUXes)")]),v._v(":\n"),_("ul",[_("li",[v._v("虽然在传统的逻辑电路中，MUXes 是通过逻辑门实现的，但在 FPGA 中，它们通常与 LUTs 结合或独立实现。")]),v._v(" "),_("li",[v._v("MUXes 在 FPGA 设计中用于根据控制信号选择不同的输入路径，这对于创建复杂的数据路径和逻辑结构至关重要。")])])]),v._v(" "),_("li",[_("strong",[v._v("触发器 (Flip-Flops)")]),v._v(":\n"),_("ul",[_("li",[v._v("Flip-Flops 用于存储信息，是实现时序逻辑的关键元件。它们通常与 LUTs 配对，以构成可存储状态的逻辑单元。")])])]),v._v(" "),_("li",[_("strong",[v._v("编程互联资源 (Programmable Interconnects)")]),v._v(":\n"),_("ul",[_("li",[v._v("这些是连接 FPGA 内部不同部件的路径。它们可以被编程以形成任何所需的逻辑网络，从而将 LUTs、Flip-Flops 和其他资源连接起来。")])])]),v._v(" "),_("li",[_("strong",[v._v("输入/输出块 (I/O Blocks)")]),v._v(":\n"),_("ul",[_("li",[v._v("这些块连接 FPGA 和外部世界，提供数据输入和输出功能。它们可以配置为不同类型的接口（如单端或差分）。")])])]),v._v(" "),_("li",[_("strong",[v._v("专用硬件资源")]),v._v(":\n"),_("ul",[_("li",[v._v("许多 FPGA 还包含专用的硬件资源，如 DSP (数字信号处理) 块、内存控制器、时钟管理模块（如 PLLs 和 BUFGs），以及其他特定功能块。")])])]),v._v(" "),_("li",[_("strong",[v._v("存储资源")]),v._v(":\n"),_("ul",[_("li",[v._v("包括 RAM 块 (Block RAM) 或更小的存储单元，用于数据存储和缓冲。")])])])]),v._v(" "),_("p",[v._v("FPGA 的关键优势在于其高度可编程性和灵活性。设计师可以通过编程定义 LUTs、MUXes、Flip-Flops 以及互连的配置和组合方式，从而在没有物理改动硬件的情况下实现几乎任何数字逻辑设计。这种灵活性使得 FPGA 在快速原型制作、定制硬件加速和可重配置系统中非常有价值。")])])}),[],!1,null,null,null);_.default=s.exports}}]); \ No newline at end of file +(window.webpackJsonp=window.webpackJsonp||[]).push([[26],{307:function(v,_,l){"use strict";l.r(_);var i=l(14),s=Object(i.a)({},(function(){var v=this,_=v._self._c;return _("ContentSlotsDistributor",{attrs:{"slot-key":v.$parent.slotKey}},[_("h1",{attrs:{id:"_2023-11-15-vivado"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#_2023-11-15-vivado"}},[v._v("#")]),v._v(" 2023.11.15-Vivado")]),v._v(" "),_("h2",{attrs:{id:"_1-rtl-schematic-synthesis-schematic"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#_1-rtl-schematic-synthesis-schematic"}},[v._v("#")]),v._v(" 1. RTL Schematic & Synthesis Schematic")]),v._v(" "),_("p",[v._v("在 Vivado 或类似的 FPGA 开发环境中，您会遇到 RTL (Register Transfer Level) 分析中的 Schematic 和 Synthesis 过程中的 Schematic。它们虽然看起来相似，但代表了不同阶段的电路设计和功能。")]),v._v(" "),_("ol",[_("li",[_("p",[_("strong",[v._v("RTL Analysis Schematic")]),v._v(":")]),v._v(" "),_("ul",[_("li",[v._v("这个 Schematic 是您用硬件描述语言（如 Verilog）编写的代码的直接可视化表示。")]),v._v(" "),_("li",[v._v("它展示了代码中定义的模块、它们的互联以及信号流。")]),v._v(" "),_("li",[v._v("RTL Schematic 重点在于逻辑功能的实现，而不是实际硬件如何实现这些功能。它更多地表示逻辑结构而非物理结构。")]),v._v(" "),_("li",[v._v("这是设计验证的早期阶段，您可以在这里检查逻辑错误或结构问题。")])]),v._v(" "),_("p",[_("img",{attrs:{src:"2023%2011%2015-Vivado%20f0f425f653cf4e13826fe8e5e4dc86ef/Untitled.png",alt:"Untitled"}})])]),v._v(" "),_("li",[_("p",[_("strong",[v._v("Synthesis Schematic")]),v._v(":")]),v._v(" "),_("ul",[_("li",[v._v("经过综合后的 Schematic 是将 RTL 设计转换为实际 FPGA 内部资源（如查找表（LUTs）、寄存器和逻辑单元）的表示。")]),v._v(" "),_("li",[v._v("这个过程涉及优化、逻辑最小化、资源分配和时序分析。")]),v._v(" "),_("li",[v._v("Synthesis Schematic 展示了设计如何映射到 FPGA 的实际硬件上，包括使用的具体资源和连接。")]),v._v(" "),_("li",[v._v("这是设计流程的后期阶段，您可以在这里优化性能、资源使用和满足时序要求。")])]),v._v(" "),_("p",[_("img",{attrs:{src:"2023%2011%2015-Vivado%20f0f425f653cf4e13826fe8e5e4dc86ef/Untitled%201.png",alt:"Untitled"}})])])]),v._v(" "),_("p",[v._v("总结来说，RTL Schematic 关注于逻辑设计的表示，而 Synthesis Schematic 则关注于该设计在 FPGA 上的物理实现。理解两者的区别对于 FPGA 开发至关重要，因为这影响着您如何优化设计以及解决可能出现的问题。")]),v._v(" "),_("h2",{attrs:{id:"_2-project汇总中的lut-ff-io-bufg"}},[_("a",{staticClass:"header-anchor",attrs:{href:"#_2-project汇总中的lut-ff-io-bufg"}},[v._v("#")]),v._v(" 2. 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number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" cprmu_1"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" cprmu_2 "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token important"}},[t._v("always")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" @"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("posedge")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" clk"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("begin")]),s("span",{pre:!0,attrs:{class:"token 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"),s("span",{pre:!0,attrs:{class:"token function"}},[t._v("calculate_result")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("A"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" B"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//非法操作数*")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" res"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("wire")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" temp"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token important"}},[t._v("always")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v("@ （"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v("）"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("begin")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v("\n res "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" cprmu_2 – cprmu_1 "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//temp = cprmu_2 – cprmu_1 ; //不合法，always块里赋值对象不能是wire型*")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("end")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("endmodule")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v("\n")])])]),s("h3",{attrs:{id:"操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#操作符"}},[t._v("#")]),t._v(" 操作符")]),t._v(" "),s("p",[t._v("Verilog 中提供了大约 9 种操作符，分别是算术、关系、等价、逻辑、按位、归约、移位、拼接、条件操作符。")]),t._v(" "),s("p",[t._v("大部分操作符与 C 语言中类似。同类型操作符之间，除条件操作符从右往左关联，其余操作符都是自左向右关联。圆括号内表达式优先执行。例如下面每组的 2 种写法都是等价的。")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//自右向左关联，两种写法等价")]),t._v("\nA"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v("B"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v("C "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("A"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v("B）"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v("C "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//自右向左关联，两种写法等价，结果为 B、D 或 F")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" D "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" F "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" D "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" F"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n"),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//自右向左关联，两种写法不等价")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" C"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" D "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" F "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果 D 或 F")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" D "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" F "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 B、D 或 F")]),t._v("\n")])])]),s("p",[t._v("不同操作符之间，优先级是不同的。下表列出了操作符优先级从高至低的排列顺序。当没有圆括号时，Verilog 会根据操作符优先级对表达式进行计算。为了避免由操作符优先级导致的计算混乱，在不确定优先级时，建议用圆括号将表达式区分开来。")]),t._v(" "),s("table",[s("thead",[s("tr",[s("th",[t._v("操作符")]),t._v(" "),s("th",[t._v("操作符号")]),t._v(" "),s("th",[t._v("优先级")])])]),t._v(" "),s("tbody",[s("tr",[s("td",[t._v("单目运算")]),t._v(" "),s("td",[t._v("+ - ! ~")]),t._v(" "),s("td",[t._v("最高")])]),t._v(" "),s("tr",[s("td",[t._v("乘、除、取模")]),t._v(" "),s("td",[t._v("* / %")]),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td",[t._v("加减")]),t._v(" "),s("td",[t._v("+ -")]),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td",[t._v("移位")]),t._v(" "),s("td",[t._v("<<  >>")]),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td",[t._v("关系")]),t._v(" "),s("td",[t._v("<  <=  >  >=")]),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td",[t._v("等价")]),t._v(" "),s("td",[t._v("==  !=  ===  !===")]),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td",[t._v("归约")]),t._v(" "),s("td",[t._v("& ~&")]),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td"),t._v(" "),s("td",[t._v("^ ~^")]),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td"),t._v(" "),s("td"),t._v(" "),s("td",[t._v("~")])]),t._v(" "),s("tr",[s("td",[t._v("逻辑")]),t._v(" "),s("td",[t._v("&&")]),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td"),t._v(" "),s("td"),t._v(" "),s("td")]),t._v(" "),s("tr",[s("td",[t._v("条件")]),t._v(" "),s("td",[t._v("?:")]),t._v(" "),s("td",[t._v("最低")])])])]),t._v(" "),s("h3",{attrs:{id:"算术操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#算术操作符"}},[t._v("#")]),t._v(" 算术操作符")]),t._v(" "),s("p",[t._v("算术操作符包括单目操作符和双目操作符。")]),t._v(" "),s("p",[t._v("双目操作符对 2 个操作数进行算术运算，包括乘（*）、除（/）、加（+）、减（-）、求幂（**）、取模（%）。")]),t._v(" "),s("h2",{attrs:{id:"实例-3"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-3"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" a"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" b"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" c "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\na "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b0010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nb "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1001")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nc "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" a"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v("b"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为c=b'b1011*")]),t._v("\nc "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" a"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("/")]),t._v("b"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为c=4，取整*")]),t._v("\n")])])]),s("p",[t._v("如果操作数某一位为 X，则计算结果也会全部出现 X。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-4"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-4"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("b "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b100x")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nc "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" a"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v("b "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为c=4'bxxxx*")]),t._v("\n")])])]),s("p",[t._v("对变量进行声明时，要根据变量的操作符对变量的位宽进行合理声明，不要让结果溢出。上述例子中，相加的 2 个变量位宽为 4bit，那么结果寄存器变量位宽最少为 5bit。否则，高位将被截断，导致结果高位丢失。无符号数乘法时，结果变量位宽应该为 2 个操作数位宽之和。")]),t._v(" "),s("h2",{attrs:{id:"实例-5"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-5"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" mula "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" mulb"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("5")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" res "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nmula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'he")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nmulb "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2'h3")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nres "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" mula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" mulb "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为res=6'h2a, 数据结果没有丢失位数*")]),t._v("\n")])])]),s("ul",[s("li",[t._v("和 - 也可以作为单目操作符来使用，表示操作数的正负性。此类操作符优先级最高。")])]),t._v(" "),s("div",{staticClass:"language- extra-class"},[s("pre",{pre:!0,attrs:{class:"language-text"}},[s("code",[t._v("-4 //表示负4\n+3 //表示正3\n")])])]),s("p",[t._v("负数表示时，可以直接在十进制数字前面增加一个减号 -，也可以指定位宽。因为负数使用二进制补码来表示，不指定位宽来表示负数，编译器在转换时，会自动分配位宽，从而导致意想不到的结果。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-6"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-6"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("mula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'd4")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nmulb "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nres "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" mula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" mulb "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//计算结果为res=-6'd8, 即res=6'h38，正常*")]),t._v("\nres "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" mula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("'d4")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//(4的32次幂-4) * 2, 结果异常*")]),t._v("\n")])])]),s("h3",{attrs:{id:"关系操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#关系操作符"}},[t._v("#")]),t._v(" 关系操作符")]),t._v(" "),s("p",[t._v("关系操作符有大于（>），小于（<），大于等于（>=），小于等于（<=）。")]),t._v(" "),s("p",[t._v("关系操作符的正常结果有 2 种，真（1）或假（0）。")]),t._v(" "),s("p",[t._v("如果操作数中有一位为 x 或 z，则关系表达式的结果为 x。")]),t._v(" "),s("h2",{attrs:{id:"实例-7"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-7"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nX "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3'b1xx")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n \nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为真*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("<=")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为假*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">=")]),t._v(" Z "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为X，不确定*")]),t._v("\n")])])]),s("h3",{attrs:{id:"等价操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#等价操作符"}},[t._v("#")]),t._v(" 等价操作符")]),t._v(" "),s("p",[t._v("等价操作符包括逻辑相等（==），逻辑不等（!=），全等（===），非全等（!==）。")]),t._v(" "),s("p",[t._v("等价操作符的正常结果有 2 种：为真（1）或假（0）。")]),t._v(" "),s("p",[t._v("逻辑相等/不等操作符不能比较 x 或 z，当操作数包含一个 x 或 z，则结果为不确定值。")]),t._v(" "),s("p",[t._v("全等比较时，如果按位比较有相同的 x 或 z，返回结果也可以为 1，即全等比较可比较 x 或 z。所以，全等比较的结果一定不包含 x。举例如下：")]),t._v(" "),s("h2",{attrs:{id:"实例-8"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-8"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("8'h04")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'bxxxx")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nD "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'hx")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为真*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为假*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为X，不确定*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("===")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为假，返回值为0*")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("===")]),t._v(" D "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为真，返回值为1*")]),t._v("\n")])])]),s("h3",{attrs:{id:"逻辑操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#逻辑操作符"}},[t._v("#")]),t._v(" 逻辑操作符")]),t._v(" "),s("p",[t._v("逻辑操作符主要有 3 个：&&（逻辑与）, ||（逻辑或），!（逻辑非）。")]),t._v(" "),s("p",[t._v("逻辑操作符的计算结果是一个 1 bit 的值，0 表示假，1 表示真，x 表示不确定。")]),t._v(" "),s("p",[t._v("如果一个操作数不为 0，它等价于逻辑 1；如果一个操作数等于 0，它等价于逻辑 0。如果它任意一位为 x 或 z，它等价于 x。")]),t._v(" "),s("p",[t._v("如果任意一个操作数包含 x，逻辑操作符运算结果不一定为 x。")]),t._v(" "),s("p",[t._v("逻辑操作符的操作数可以为变量，也可以为表达式。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-9"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-9"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2'b1x")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n \nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&&")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 为假*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("||")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 为真*! A *// 为假*! B *// 为真*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&&")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 为X，不确定*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("||")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 为真，因为A为真*(A==2) && (! B) *//为真，此时第一个操作数为表达式*")]),t._v("\n")])])]),s("h3",{attrs:{id:"按位操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#按位操作符"}},[t._v("#")]),t._v(" 按位操作符")]),t._v(" "),s("p",[t._v("按位操作符包括：取反（~），与（&），或（|），异或（^），同或（~^）。")]),t._v(" "),s("p",[t._v("按位操作符对 2 个操作数的每 1 bit 数据进行按位操作。")]),t._v(" "),s("p",[t._v("如果 2 个操作数位宽不相等，则用 0 向左扩展补充较短的操作数。")]),t._v(" "),s("p",[t._v("取反操作符只有一个操作数，它对操作数的每 1 bit 数据进行取反操作。")]),t._v(" "),s("p",[t._v("下图给出了按位操作符的逻辑规则。")]),t._v(" "),s("p",[t._v("| &(与） | 0 | 1 | x | | |(或) | 0 | 1 | x |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| 0 | 0 | 0 | 0 | | 0 | 0 | 1 | x |\n| 1 | 0 | 1 | x | | 1 | 1 | 1 | 1 |\n| x | 0 | x | x | | x | x | 1 | x |")]),t._v(" "),s("table",[s("thead",[s("tr",[s("th",[t._v("^(异或)")]),t._v(" "),s("th",[t._v("0")]),t._v(" "),s("th",[t._v("1")]),t._v(" "),s("th",[t._v("x")]),t._v(" "),s("th"),t._v(" "),s("th",[t._v("~^(同或)")]),t._v(" "),s("th",[t._v("0")]),t._v(" "),s("th",[t._v("1")]),t._v(" "),s("th",[t._v("x")])])]),t._v(" "),s("tbody",[s("tr",[s("td",[t._v("0")]),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td"),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("x")])]),t._v(" "),s("tr",[s("td",[t._v("1")]),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td"),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("x")])]),t._v(" "),s("tr",[s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td"),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")])])])]),t._v(" "),s("h2",{attrs:{id:"实例-10"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-10"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b0101")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1001")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'bx010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("~")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b1010*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b0001*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("|")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b1101*")]),t._v("\nA"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("^")]),t._v("B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b1100*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("~^")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b0011*")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("|")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b1011*")]),t._v("\nB"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&")]),t._v("C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'bx000*")]),t._v("\n")])])]),s("h3",{attrs:{id:"归约操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#归约操作符"}},[t._v("#")]),t._v(" 归约操作符")]),t._v(" "),s("p",[t._v("归约操作符包括：归约与（&），归约与非（~&），归约或（|），归约或非（~|），归约异或（^），归约同或（~^）。")]),t._v(" "),s("p",[t._v("归约操作符只有一个操作数，它对这个向量操作数逐位进行操作，最终产生一个 1bit 结果。")]),t._v(" "),s("p",[t._v("逻辑操作符、按位操作符和归约操作符都使用相同的符号表示，因此有时候容易混淆。区分这些操作符的关键是分清操作数的数目，和计算结果的规则。")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 1 & 0 & 1 & 0 = 1'b0，可用来判断变量A是否全1")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("~|")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 ~(1 | 0 | 1 | 0) = 1'b0, 可用来判断变量A是否为全0")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("^")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 1 ^ 0 ^ 1 ^ 0 = 1'b0")]),t._v("\n")])])]),s("h3",{attrs:{id:"移位操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#移位操作符"}},[t._v("#")]),t._v(" 移位操作符")]),t._v(" "),s("p",[t._v("移位操作符包括左移（<<），右移（>>），算术左移（<<<），算术右移（>>>）。")]),t._v(" "),s("p",[t._v("移位操作符是双目操作符，两个操作数分别表示要进行移位的向量信号（操作符左侧）与移动的位数（操作符右侧）。")]),t._v(" "),s("p",[t._v("算术左移和逻辑左移时，右边低位会补 0。")]),t._v(" "),s("p",[t._v("逻辑右移时，左边高位会补 0；而算术右移时，左边高位会补充符号位，以保证数据缩小后值的正确性。")]),t._v(" "),s("h2",{attrs:{id:"实例-11"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-11"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1100")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b0010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">>")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 4'b0011*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("<<")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 4'b1000*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("<<<")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 4'b1000*")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("A"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">>>")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 2 + (-4/4) = 1, 4'b0001*")]),t._v("\n")])])]),s("h3",{attrs:{id:"拼接操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#拼接操作符"}},[t._v("#")]),t._v(" 拼接操作符")]),t._v(" "),s("p",[t._v("拼接操作符用大括号 {，} 来表示，用于将多个操作数（向量）拼接成新的操作数（向量），信号间用逗号隔开。")]),t._v(" "),s("p",[t._v("拼接符操作数必须指定位宽，常数的话也需要指定位宽。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-12"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-12"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1'b1")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nY1 "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),t._v("B"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" A"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" A"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'h3")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("}")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为Y1='b1100_0011*")]),t._v("\nY2 "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),t._v("B"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("}")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3'd4")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("}")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 Y2=7'b111_1100*")]),t._v("\nY3 "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("32")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1'b0")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("}}")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 Y3=32h0，常用作寄存器初始化时匹配位宽的赋初值*")]),t._v("\n")])])]),s("h3",{attrs:{id:"条件操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#条件操作符"}},[t._v("#")]),t._v(" 条件操作符")]),t._v(" "),s("p",[t._v("条件表达式有 3 个操作符，结构描述如下：")]),t._v(" "),s("div",{staticClass:"language- extra-class"},[s("pre",{pre:!0,attrs:{class:"language-text"}},[s("code",[t._v("condition_expression ? true_expression : false_expression\n")])])]),s("p",[t._v("计算时，如果 condition_expression 为真（逻辑值为 1），则运算结果为 true_expression；如果 condition_expression 为假（逻辑值为 0），则计算结果为 false_expression。")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("assign")]),t._v(" hsel "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("addr"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("9")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("8")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2'b0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" hsel_p1 "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" hsel_p2 "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//当信号 addr 高 2bit 为 0 时，hsel 赋值为 hsel_p1; 否则，将 hsel_p2 赋值给 hsel。")]),t._v("\n")])])]),s("p",[t._v("其实，条件表达式类似于 2 路（或多路）选择器，其描述方式完全可以用 if-else 语句代替。")]),t._v(" "),s("p",[t._v("当然条件操作符也能进行嵌套，完成一个多次选择的逻辑。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-13"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-13"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token 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punctuation"}},[t._v("(")]),t._v("addr"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("9")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("8")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2'b01")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" hsel_p2 "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("addr"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("9")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("8")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2'b10")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" hsel_p3 "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("addr"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("9")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("8")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2'b11")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("?")]),t._v(" hsel_p4 "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n")])])])])}),[],!1,null,null,null);s.default=n.exports}}]); \ No newline at end of file +(window.webpackJsonp=window.webpackJsonp||[]).push([[29],{308:function(t,s,a){"use strict";a.r(s);var r=a(14),n=Object(r.a)({},(function(){var t=this,s=t._self._c;return s("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[s("h1",{attrs:{id:"_4-verilog-表达式"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#_4-verilog-表达式"}},[t._v("#")]),t._v(" 4. 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"),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" a"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" b"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" 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operator"}},[t._v("+")]),t._v("b"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为c=b'b1011*")]),t._v("\nc "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" a"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("/")]),t._v("b"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为c=4，取整*")]),t._v("\n")])])]),s("p",[t._v("如果操作数某一位为 X，则计算结果也会全部出现 X。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-4"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-4"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("b "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b100x")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nc "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" a"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v("b "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为c=4'bxxxx*")]),t._v("\n")])])]),s("p",[t._v("对变量进行声明时，要根据变量的操作符对变量的位宽进行合理声明，不要让结果溢出。上述例子中，相加的 2 个变量位宽为 4bit，那么结果寄存器变量位宽最少为 5bit。否则，高位将被截断，导致结果高位丢失。无符号数乘法时，结果变量位宽应该为 2 个操作数位宽之和。")]),t._v(" "),s("h2",{attrs:{id:"实例-5"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-5"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" mula "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" mulb"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("reg")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("**")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("5")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" res "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nmula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'he")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nmulb "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2'h3")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nres "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" mula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" mulb "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为res=6'h2a, 数据结果没有丢失位数*")]),t._v("\n")])])]),s("ul",[s("li",[t._v("和 - 也可以作为单目操作符来使用，表示操作数的正负性。此类操作符优先级最高。")])]),t._v(" "),s("div",{staticClass:"language- extra-class"},[s("pre",{pre:!0,attrs:{class:"language-text"}},[s("code",[t._v("-4 //表示负4\n+3 //表示正3\n")])])]),s("p",[t._v("负数表示时，可以直接在十进制数字前面增加一个减号 -，也可以指定位宽。因为负数使用二进制补码来表示，不指定位宽来表示负数，编译器在转换时，会自动分配位宽，从而导致意想不到的结果。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-6"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-6"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("mula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'd4")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nmulb "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nres "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" mula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" mulb "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//计算结果为res=-6'd8, 即res=6'h38，正常*")]),t._v("\nres "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" mula "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("'d4")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//(4的32次幂-4) * 2, 结果异常*")]),t._v("\n")])])]),s("h3",{attrs:{id:"关系操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#关系操作符"}},[t._v("#")]),t._v(" 关系操作符")]),t._v(" "),s("p",[t._v("关系操作符有大于（>），小于（<），大于等于（>=），小于等于（<=）。")]),t._v(" "),s("p",[t._v("关系操作符的正常结果有 2 种，真（1）或假（0）。")]),t._v(" "),s("p",[t._v("如果操作数中有一位为 x 或 z，则关系表达式的结果为 x。")]),t._v(" "),s("h2",{attrs:{id:"实例-7"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-7"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nX "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3'b1xx")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n \nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为真*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("<=")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为假*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">=")]),t._v(" Z "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为X，不确定*")]),t._v("\n")])])]),s("h3",{attrs:{id:"等价操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#等价操作符"}},[t._v("#")]),t._v(" 等价操作符")]),t._v(" "),s("p",[t._v("等价操作符包括逻辑相等（==），逻辑不等（!=），全等（===），非全等（!==）。")]),t._v(" "),s("p",[t._v("等价操作符的正常结果有 2 种：为真（1）或假（0）。")]),t._v(" "),s("p",[t._v("逻辑相等/不等操作符不能比较 x 或 z，当操作数包含一个 x 或 z，则结果为不确定值。")]),t._v(" "),s("p",[t._v("全等比较时，如果按位比较有相同的 x 或 z，返回结果也可以为 1，即全等比较可比较 x 或 z。所以，全等比较的结果一定不包含 x。举例如下：")]),t._v(" "),s("h2",{attrs:{id:"实例-8"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-8"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("8'h04")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'bxxxx")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nD "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'hx")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为真*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为假*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为X，不确定*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("===")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为假，返回值为0*")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("===")]),t._v(" D "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//为真，返回值为1*")]),t._v("\n")])])]),s("h3",{attrs:{id:"逻辑操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#逻辑操作符"}},[t._v("#")]),t._v(" 逻辑操作符")]),t._v(" "),s("p",[t._v("逻辑操作符主要有 3 个：&&（逻辑与）, ||（逻辑或），!（逻辑非）。")]),t._v(" "),s("p",[t._v("逻辑操作符的计算结果是一个 1 bit 的值，0 表示假，1 表示真，x 表示不确定。")]),t._v(" "),s("p",[t._v("如果一个操作数不为 0，它等价于逻辑 1；如果一个操作数等于 0，它等价于逻辑 0。如果它任意一位为 x 或 z，它等价于 x。")]),t._v(" "),s("p",[t._v("如果任意一个操作数包含 x，逻辑操作符运算结果不一定为 x。")]),t._v(" "),s("p",[t._v("逻辑操作符的操作数可以为变量，也可以为表达式。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-9"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-9"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2'b1x")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n \nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&&")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 为假*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("||")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 为真*! A *// 为假*! B *// 为真*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&&")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 为X，不确定*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("||")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// 为真，因为A为真*(A==2) && (! B) *//为真，此时第一个操作数为表达式*")]),t._v("\n")])])]),s("h3",{attrs:{id:"按位操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#按位操作符"}},[t._v("#")]),t._v(" 按位操作符")]),t._v(" "),s("p",[t._v("按位操作符包括：取反（~），与（&），或（|），异或（^），同或（~^）。")]),t._v(" "),s("p",[t._v("按位操作符对 2 个操作数的每 1 bit 数据进行按位操作。")]),t._v(" "),s("p",[t._v("如果 2 个操作数位宽不相等，则用 0 向左扩展补充较短的操作数。")]),t._v(" "),s("p",[t._v("取反操作符只有一个操作数，它对操作数的每 1 bit 数据进行取反操作。")]),t._v(" "),s("p",[t._v("下图给出了按位操作符的逻辑规则。")]),t._v(" "),s("p",[t._v("| &(与） | 0 | 1 | x | | |(或) | 0 | 1 | x |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- |\n| 0 | 0 | 0 | 0 | | 0 | 0 | 1 | x |\n| 1 | 0 | 1 | x | | 1 | 1 | 1 | 1 |\n| x | 0 | x | x | | x | x | 1 | x |")]),t._v(" "),s("table",[s("thead",[s("tr",[s("th",[t._v("^(异或)")]),t._v(" "),s("th",[t._v("0")]),t._v(" "),s("th",[t._v("1")]),t._v(" "),s("th",[t._v("x")]),t._v(" "),s("th"),t._v(" "),s("th",[t._v("~^(同或)")]),t._v(" "),s("th",[t._v("0")]),t._v(" "),s("th",[t._v("1")]),t._v(" "),s("th",[t._v("x")])])]),t._v(" "),s("tbody",[s("tr",[s("td",[t._v("0")]),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td"),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("x")])]),t._v(" "),s("tr",[s("td",[t._v("1")]),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td"),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("0")]),t._v(" "),s("td",[t._v("1")]),t._v(" "),s("td",[t._v("x")])]),t._v(" "),s("tr",[s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td"),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")]),t._v(" "),s("td",[t._v("x")])])])]),t._v(" "),s("h2",{attrs:{id:"实例-10"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-10"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b0101")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1001")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'bx010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("~")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b1010*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b0001*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("|")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b1101*")]),t._v("\nA"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("^")]),t._v("B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b1100*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("~^")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b0011*")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("|")]),t._v(" C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'b1011*")]),t._v("\nB"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&")]),t._v("C "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//4'bx000*")]),t._v("\n")])])]),s("h3",{attrs:{id:"归约操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#归约操作符"}},[t._v("#")]),t._v(" 归约操作符")]),t._v(" "),s("p",[t._v("归约操作符包括：归约与（&），归约与非（~&），归约或（|），归约或非（~|），归约异或（^），归约同或（~^）。")]),t._v(" "),s("p",[t._v("归约操作符只有一个操作数，它对这个向量操作数逐位进行操作，最终产生一个 1bit 结果。")]),t._v(" "),s("p",[t._v("逻辑操作符、按位操作符和归约操作符都使用相同的符号表示，因此有时候容易混淆。区分这些操作符的关键是分清操作数的数目，和计算结果的规则。")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("&")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 1 & 0 & 1 & 0 = 1'b0，可用来判断变量A是否全1")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("~|")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 ~(1 | 0 | 1 | 0) = 1'b0, 可用来判断变量A是否为全0")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("^")]),t._v("A "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 1 ^ 0 ^ 1 ^ 0 = 1'b0")]),t._v("\n")])])]),s("h3",{attrs:{id:"移位操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#移位操作符"}},[t._v("#")]),t._v(" 移位操作符")]),t._v(" "),s("p",[t._v("移位操作符包括左移（<<），右移（>>），算术左移（<<<），算术右移（>>>）。")]),t._v(" "),s("p",[t._v("移位操作符是双目操作符，两个操作数分别表示要进行移位的向量信号（操作符左侧）与移动的位数（操作符右侧）。")]),t._v(" "),s("p",[t._v("算术左移和逻辑左移时，右边低位会补 0。")]),t._v(" "),s("p",[t._v("逻辑右移时，左边高位会补 0；而算术右移时，左边高位会补充符号位，以保证数据缩小后值的正确性。")]),t._v(" "),s("h2",{attrs:{id:"实例-11"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-11"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1100")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b0010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">>")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 4'b0011*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("<<")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 4'b1000*")]),t._v("\nA "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("<<<")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 4'b1000*")]),t._v("\nC "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" B "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("A"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">>>")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 2 + (-4/4) = 1, 4'b0001*")]),t._v("\n")])])]),s("h3",{attrs:{id:"拼接操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#拼接操作符"}},[t._v("#")]),t._v(" 拼接操作符")]),t._v(" "),s("p",[t._v("拼接操作符用大括号 {，} 来表示，用于将多个操作数（向量）拼接成新的操作数（向量），信号间用逗号隔开。")]),t._v(" "),s("p",[t._v("拼接符操作数必须指定位宽，常数的话也需要指定位宽。例如：")]),t._v(" "),s("h2",{attrs:{id:"实例-12"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#实例-12"}},[t._v("#")]),t._v(" 实例")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[t._v("A "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'b1010")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nB "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1'b1")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\nY1 "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),t._v("B"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" A"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" A"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4'h3")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("}")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为Y1='b1100_0011*")]),t._v("\nY2 "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),t._v("B"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("}")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("3'd4")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("}")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 Y2=7'b111_1100*")]),t._v("\nY3 "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("32")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("{")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1'b0")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("}}")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//结果为 Y3=32h0，常用作寄存器初始化时匹配位宽的赋初值*")]),t._v("\n")])])]),s("h3",{attrs:{id:"条件操作符"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#条件操作符"}},[t._v("#")]),t._v(" 条件操作符")]),t._v(" "),s("p",[t._v("条件表达式有 3 个操作符，结构描述如下：")]),t._v(" "),s("div",{staticClass:"language- extra-class"},[s("pre",{pre:!0,attrs:{class:"language-text"}},[s("code",[t._v("condition_expression ? true_expression : false_expression\n")])])]),s("p",[t._v("计算时，如果 condition_expression 为真（逻辑值为 1），则运算结果为 true_expression；如果 condition_expression 为假（逻辑值为 0），则计算结果为 false_expression。")]),t._v(" "),s("div",{staticClass:"language-verilog extra-class"},[s("pre",{pre:!0,attrs:{class:"language-verilog"}},[s("code",[s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("assign")]),t._v(" hsel "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("addr"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("9")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("8")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token 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Matching")]),t._v(" "),s("div",{staticClass:"language-scala extra-class"},[s("pre",{pre:!0,attrs:{class:"language-scala"}},[s("code",[s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// y is an integer variable defined somewhere else in the code")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("val")]),t._v(" y "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("7")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("/// ...")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("val")]),t._v(" x "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" y "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("match")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("case")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("=>")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"zero"')]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// One common syntax, preferred if fits in one line")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("case")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("=>")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// Another common syntax, preferred if does not fit in one line.")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"one"')]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// Note the code block continues until the next case")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("case")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("=>")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// Another syntax, but curly braces are not required")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"two"')]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("case")]),t._v(" _ "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("=>")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"many"')]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// _ is a wildcard that matches all values")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\nprintln"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"y is "')]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+")]),t._v(" x"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// out: y is many")]),t._v("\n")])])]),s("p",[t._v("y 为7，不匹配，因此采用默认值")]),t._v(" "),s("ul",[s("li",[t._v("每个跟在**"),s("code",[t._v("=>")]),s("strong",[t._v("操作符后面的代码块都会继续执行，直到它到达")]),s("code",[t._v("match")]),s("strong",[t._v("的结束大括号或下一个")]),s("code",[t._v("case")]),t._v("**语句。")]),t._v(" "),s("li",[t._v("**"),s("code",[t._v("match")]),s("strong",[t._v("会按照")]),s("code",[t._v("case")]),s("strong",[t._v("语句的顺序进行搜索，一旦匹配到一个")]),s("code",[t._v("case")]),s("strong",[t._v("语句，就不会再对其他")]),s("code",[t._v("case")]),t._v("**语句进行检查。")]),t._v(" "),s("li",[t._v("使用下划线**"),s("code",[t._v("_")]),t._v("**作为通配符，来处理任何未找到匹配的值。")])]),t._v(" "),s("h3",{attrs:{id:"example-multiple-value-matching"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#example-multiple-value-matching"}},[t._v("#")]),t._v(" Example: Multiple Value Matching")]),t._v(" "),s("div",{staticClass:"language-scala extra-class"},[s("pre",{pre:!0,attrs:{class:"language-scala"}},[s("code",[s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("def")]),t._v(" animalType"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("biggerThanBreadBox"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(":")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("Boolean")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" meanAsCanBe"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(":")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("Boolean")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v(":")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("String")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" 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"),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"wolverine"')]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("case")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token boolean"}},[t._v("true")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token boolean"}},[t._v("false")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("=>")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"elephant"')]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("case")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token boolean"}},[t._v("false")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token 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punctuation"}},[t._v("}")]),t._v("\nprintln"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("animalType"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token boolean"}},[t._v("true")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token boolean"}},[t._v("true")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("// wolverine")]),t._v("\n")])])]),s("h3",{attrs:{id:"example-type-matching"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#example-type-matching"}},[t._v("#")]),t._v(" Example: Type Matching")]),t._v(" "),s("div",{staticClass:"language-scala extra-class"},[s("pre",{pre:!0,attrs:{class:"language-scala"}},[s("code",[s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("val")]),t._v(" sequence 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function"}},[t._v("s")]),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"')]),s("span",{pre:!0,attrs:{class:"token interpolation"}},[s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("$")]),s("span",{pre:!0,attrs:{class:"token expression"}},[t._v("x")])]),s("span",{pre:!0,attrs:{class:"token string"}},[t._v(' is an unknown type!"')])]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n")])])]),s("p",[s("strong",[s("code",[t._v("Seq")]),s("strong",[t._v("是Scala集合中的一个接口，它代表序列，而")]),s("code",[t._v("List")]),s("strong",[t._v("是")]),s("code",[t._v("Seq")]),s("strong",[t._v("的一个具体实现。在这个例子中，可以直接用")]),s("code",[t._v('List("a", 1, 0.0)')]),s("strong",[t._v("来代替")]),s("code",[t._v('Seq("a", 1, 0.0)')])]),t._v("，而不会影响**"),s("code",[t._v("foreach")]),s("strong",[t._v("和")]),s("code",[t._v("match")]),t._v("**语句的行为。")]),t._v(" "),s("h3",{attrs:{id:"example-multiple-type-matching"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#example-multiple-type-matching"}},[t._v("#")]),t._v(" Example: Multiple Type Matching")]),t._v(" "),s("p",[t._v("If you want to match on whether a value has one of many types, use the following syntax. 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sum"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("}")]),t._v("\n")])])]),s("p",[t._v("也可以用一个0宽度的wire来代替None。An IO with width zero is pruned from the emitted Verilog, and anything that tries to use the value of a zero-width wire gets a constant zero.")]),t._v(" "),s("h2",{attrs:{id:"implicits"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#implicits"}},[t._v("#")]),t._v(" Implicits")]),t._v(" "),s("p",[t._v("为了减少大量重复的模板代码，Scala引入了*隐式（implicits）*的概念，允许编译器为你自动进行一些语法简化。由于很多操作是在背后进行，隐式使用可能显得很神奇。")]),t._v(" "),s("h3",{attrs:{id:"implicit-arguments"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#implicit-arguments"}},[t._v("#")]),t._v(" Implicit Arguments")]),t._v(" "),s("p",[t._v("隐式参数的一个常见用途是当你的代码在深层的函数调用中需要访问某个顶层变量时，可以使用隐式参数自动传递这个变量，而不是手动在每个函数调用中传递它。")]),t._v(" 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"),s("p",[t._v("**"),s("code",[t._v("object")]),s("strong",[t._v("定义了一个单例对象，它是一个类的单一实例。与")]),s("code",[t._v("class")]),s("strong",[t._v("不同，当你定义一个")]),s("code",[t._v("object")]),s("strong",[t._v("时，Scala会自动为你创建这个类的一个实例。你不需要使用")]),s("code",[t._v("new")]),s("strong",[t._v("关键字来创建它的实例。在这个例子中，")]),s("code",[t._v("CatDog")]),s("strong",[t._v("是一个单例对象，可以直接访问其成员，无需创建实例。这在定义工具方法或当你需要一个全局唯一的实体时非常有用，比如这里的")]),s("code",[t._v("numberOfCats")]),s("strong",[t._v("隐式值和")]),s("code",[t._v("tooManyCats")]),t._v("**方法。")]),t._v(" "),s("h3",{attrs:{id:"example-implicit-logging"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#example-implicit-logging"}},[t._v("#")]),t._v(" Example: Implicit Logging")]),t._v(" "),s("div",{staticClass:"language-scala extra-class"},[s("pre",{pre:!0,attrs:{class:"language-scala"}},[s("code",[s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("sealed")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("trait")]),t._v(" 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As it turns out (and hopefully, as you can see from the above example), these are very powerful constructs that encapsulate a general computational pattern, allowing you to concentrate on the application logic instead of flow control, and resulting in very concise code.")]),t._v(" "),s("ul",[s("li",[t._v("对于每个参数只引用一次的函数，您"),s("em",[t._v("可以")]),t._v("使用下划线（"),s("strong",[s("code",[t._v("_")])]),t._v("）来引用每个参数。在上面的例子中，"),s("strong",[s("code",[t._v("reduce")])]),t._v(" 函数接受两个参数，可以被指定为 "),s("strong",[s("code",[t._v("_ + _")])]),t._v("。虽然这很方便，但它受制于一组额外的复杂规则，所以如果不起作用，您可以尝试：")]),t._v(" "),s("li",[t._v("明确指定输入参数列表。"),s("strong",[s("code",[t._v("reduce")])]),t._v(" 可以被明确写成 "),s("strong",[s("code",[t._v("(a, b) => a + b")])]),t._v("，通用形式是把参数列表放在括号里，后面跟着 "),s("strong",[s("code",[t._v("=>")])]),t._v("，然后是引用这些参数的函数体。")]),t._v(" "),s("li",[t._v("当需要解包元组时，使用 "),s("strong",[s("code",[t._v("case")])]),t._v(" 语句，如 "),s("strong",[s("code",[t._v("case (a, b) => a * 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As it turns out (and hopefully, as you can see from the above example), these are very powerful constructs that encapsulate a general computational pattern, allowing you to concentrate on the application logic instead of flow control, and resulting in very concise code.")]),t._v(" "),s("ul",[s("li",[t._v("对于每个参数只引用一次的函数，您"),s("em",[t._v("可以")]),t._v("使用下划线（"),s("strong",[s("code",[t._v("_")])]),t._v("）来引用每个参数。在上面的例子中，"),s("strong",[s("code",[t._v("reduce")])]),t._v(" 函数接受两个参数，可以被指定为 "),s("strong",[s("code",[t._v("_ + _")])]),t._v("。虽然这很方便，但它受制于一组额外的复杂规则，所以如果不起作用，您可以尝试：")]),t._v(" "),s("li",[t._v("明确指定输入参数列表。"),s("strong",[s("code",[t._v("reduce")])]),t._v(" 可以被明确写成 "),s("strong",[s("code",[t._v("(a, b) => a + b")])]),t._v("，通用形式是把参数列表放在括号里，后面跟着 "),s("strong",[s("code",[t._v("=>")])]),t._v("，然后是引用这些参数的函数体。")]),t._v(" "),s("li",[t._v("当需要解包元组时，使用 "),s("strong",[s("code",[t._v("case")])]),t._v(" 语句，如 "),s("strong",[s("code",[t._v("case (a, b) => a * 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* https://leetcode.cn/problems/open-the-lock/description/\n *\n * algorithms\n * Medium (52.77%)\n * Likes: 653\n * Dislikes: 0\n * Total Accepted: 128.3K\n * Total Submissions: 243.1K\n * Testcase Example: \'["0201","0101","0102","1212","2002"]\\n"0202"\'\n *\n * 你有一个带有四个圆形拨轮的转盘锁。每个拨轮都有10个数字： \'0\', \'1\', \'2\', \'3\', \'4\', \'5\', \'6\', \'7\', \'8\',\n * \'9\' 。每个拨轮可以自由旋转：例如把 \'9\' 变为 \'0\'，\'0\' 变为 \'9\' 。每次旋转都只能旋转一个拨轮的一位数字。\n *\n * 锁的初始数字为 \'0000\' ，一个代表四个拨轮的数字的字符串。\n *\n * 列表 deadends 包含了一组死亡数字，一旦拨轮的数字和列表里的任何一个元素相同，这个锁将会被永久锁定，无法再被旋转。\n *\n * 字符串 target 代表可以解锁的数字，你需要给出解锁需要的最小旋转次数，如果无论如何不能解锁，返回 -1 。\n *\n *\n *\n * 示例 1:\n *\n *\n * 输入：deadends = ["0201","0101","0102","1212","2002"], target = "0202"\n * 输出：6\n * 解释：\n * 可能的移动序列为 "0000" -> "1000" -> "1100" -> "1200" -> "1201" -> "1202" -> "0202"。\n * 注意 "0000" -> "0001" -> "0002" -> "0102" -> "0202" 这样的序列是不能解锁的，\n * 因为当拨动到 "0102" 时这个锁就会被锁定。\n *\n *\n * 示例 2:\n *\n *\n * 输入: deadends = ["8888"], target = "0009"\n * 输出：1\n * 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简洁至上

以 Markdown 为中心的项目结构，以最少的配置帮助你专注于写作。

Vue驱动

享受 Vue + webpack 的开发体验，在 Markdown 中使用 Vue 组件，同时可以使用 Vue 来开发自定义主题。

高性能

VuePress 为每个页面预渲染生成静态的 HTML，同时在页面被加载的时候，将作为 SPA 运行。

# Hello VuePress

MIT Licensed | Copyright © 2018-present Evan You
- + diff --git a/docs/.vuepress/dist/test.html b/docs/.vuepress/dist/test.html index 80bfe64..f2fd698 100644 --- a/docs/.vuepress/dist/test.html +++ b/docs/.vuepress/dist/test.html @@ -8,7 +8,7 @@ - + @@ -85,6 +85,6 @@
External (opens new window)

# daf

# fg

# fg

# fggds

# adsfg

# d

- + diff --git a/package.json b/package.json index 8cde76e..2987fb3 100644 --- a/package.json +++ b/package.json @@ -13,5 +13,8 @@ "devDependencies": { "vuepress": "^1.9.10", "vuepress-plugin-auto-sidebar": "^2.3.2" + }, + "dependencies": { + "gh-pages": "^6.1.1" } } diff --git a/yarn.lock b/yarn.lock index aec4587..5ba11fa 100644 --- a/yarn.lock +++ b/yarn.lock @@ -23,7 +23,7 @@ resolved "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.23.5.tgz" integrity sha512-uU27kfDRlhfKl+w1U6vp16IuvSLtjAxdArVXPa9BvLkrr7CYIsxH5adpHObeAGY/41+syctUWOZ140a2Rvkgjw== -"@babel/core@^7.0.0", "@babel/core@^7.0.0-0", "@babel/core@^7.0.0-0 || ^8.0.0-0 <8.0.0", "@babel/core@^7.11.0", "@babel/core@^7.12.0", "@babel/core@^7.13.0", "@babel/core@^7.4.0 || ^8.0.0-0 <8.0.0", "@babel/core@^7.8.4": +"@babel/core@^7.11.0", "@babel/core@^7.8.4": version "7.24.0" resolved "https://registry.npmjs.org/@babel/core/-/core-7.24.0.tgz" integrity 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dependencies: - "@babel/parser" "^7.23.5" - postcss "^8.4.14" - source-map "^0.6.1" - optionalDependencies: - prettier "^1.18.2 || ^2.0.0" - "@vue/compiler-ssr@3.4.21": version "3.4.21" resolved "https://registry.npmjs.org/@vue/compiler-ssr/-/compiler-ssr-3.4.21.tgz" @@ -1555,7 +1555,7 @@ dependencies: "@vuepress/types" "1.9.10" -"@vuepress/shared-utils@^1.2.0", "@vuepress/shared-utils@1.9.10": +"@vuepress/shared-utils@1.9.10", "@vuepress/shared-utils@^1.2.0": version "1.9.10" resolved "https://registry.npmjs.org/@vuepress/shared-utils/-/shared-utils-1.9.10.tgz" integrity sha512-M9A3DocPih+V8dKK2Zg9FJQ/f3JZrYsdaM/vQ9F48l8bPlzxw5NvqXIYMK4kKcGEyerQNTWCudoCpLL5uiU0hg== @@ -1783,7 +1783,7 @@ ajv-keywords@^3.1.0, ajv-keywords@^3.4.1, ajv-keywords@^3.5.2: resolved "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.5.2.tgz" integrity sha512-5p6WTN0DdTGVQk6VjcEju19IgaHudalcfabD7yhDGeA6bcQnmL+CpveLJq/3hvfwd1aof6L386Ougkx6RfyMIQ== -ajv@^6.1.0, ajv@^6.10.2, ajv@^6.12.3, ajv@^6.12.4, 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vue@^2.6.10: +vue@^2.6.10: version "2.7.16" resolved "https://registry.npmjs.org/vue/-/vue-2.7.16.tgz" integrity sha512-4gCtFXaAA3zYZdTp5s4Hl2sozuySsgz4jy1EnpBHNfpMa9dK1ZCG7viqBPCwXtmgc8nHqUsAu3G4gtmXkkY3Sw== @@ -8758,7 +8846,7 @@ webpack-sources@^1.1.0, webpack-sources@^1.4.0, webpack-sources@^1.4.1: source-list-map "^2.0.0" source-map "~0.6.1" -"webpack@^1.0.0 || ^2.0.0 || ^3.0.0 || ^4.0.0", "webpack@^3.0.0 || ^4.0.0", "webpack@^3.0.0 || ^4.1.0 || ^5.0.0-0", webpack@^4.0.0, "webpack@^4.0.0 || ^5.0.0", webpack@^4.4.0, webpack@^4.8.1, webpack@>=2: +webpack@^4.8.1: version "4.47.0" resolved "https://registry.npmjs.org/webpack/-/webpack-4.47.0.tgz" integrity sha512-td7fYwgLSrky3fI1EuU5cneU4+pbH6GgOfuKNS1tNPcfdGinGELAqsb/BP4nnvZyKSG2i/xFGU7+n2PvZA8HJQ== @@ -8801,7 +8889,7 @@ webpackbar@3.2.0: text-table "^0.2.0" wrap-ansi "^5.1.0" -websocket-driver@^0.7.4, websocket-driver@>=0.5.1: +websocket-driver@>=0.5.1, websocket-driver@^0.7.4: version "0.7.4" resolved 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