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Memory.tst
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// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/05/Memory.tst
load Memory.hdl,
output-file Memory.out,
compare-to Memory.cmp,
output-list in%D1.6.1 load%B2.1.2 address%B1.15.1 out%D1.6.1;
echo "Before you run this script, select the 'Screen' option from the 'View' menu";
set in -1, // Set RAM[0] = -1
set load 1,
set address 0,
tick,
output;
tock,
output;
set in 9999, // RAM[0] holds value
set load 0,
tick,
output;
tock,
output;
set address %X2000, // Did not also write to upper RAM or Screen
eval,
output;
set address %X4000,
eval,
output;
set in 2222, // Set RAM[2000] = 2222
set load 1,
set address %X2000,
tick,
output;
tock,
output;
set in 9999, // RAM[2000] holds value
set load 0,
tick,
output;
tock,
output;
set address 0, // Did not also write to lower RAM or Screen
eval,
output;
set address %X4000,
eval,
output;
set load 0, // Low order address bits connected
set address %X0001, eval, output;
set address %X0002, eval, output;
set address %X0004, eval, output;
set address %X0008, eval, output;
set address %X0010, eval, output;
set address %X0020, eval, output;
set address %X0040, eval, output;
set address %X0080, eval, output;
set address %X0100, eval, output;
set address %X0200, eval, output;
set address %X0400, eval, output;
set address %X0800, eval, output;
set address %X1000, eval, output;
set address %X2000, eval, output;
set address %X1234, // RAM[1234] = 1234
set in 1234,
set load 1,
tick,
output;
tock,
output;
set load 0,
set address %X2234, // Did not also write to upper RAM or Screen
eval, output;
set address %X6234,
eval, output;
set address %X2345, // RAM[2345] = 2345
set in 2345,
set load 1,
tick,
output;
tock,
output;
set load 0,
set address %X0345, // Did not also write to lower RAM or Screen
eval, output;
set address %X4345,
eval, output;
// Keyboard test
set address 24576,
echo "Click the Keyboard icon and hold down the 'K' key (uppercase) until you see the next message (it should appear shortly after that) ...",
// It's important to keep holding the key down since if the system is busy,
// the memory will zero itself before being outputted.
while out <> 75 {
eval,
}
clear-echo,
output;
// Screen test
set load 1,
set in -1,
set address %X4FCF,
tick,
tock,
output,
set address %X504F,
tick,
tock,
output;
set address %X0FCF, // Did not also write to lower or upper RAM
eval,
output;
set address %X2FCF,
eval,
output;
set load 0, // Low order address bits connected
set address %X4FCE, eval, output;
set address %X4FCD, eval, output;
set address %X4FCB, eval, output;
set address %X4FC7, eval, output;
set address %X4FDF, eval, output;
set address %X4FEF, eval, output;
set address %X4F8F, eval, output;
set address %X4F4F, eval, output;
set address %X4ECF, eval, output;
set address %X4DCF, eval, output;
set address %X4BCF, eval, output;
set address %X47CF, eval, output;
set address %X5FCF, eval, output;
set load 0,
set address 24576,
echo "Make sure you see ONLY two horizontal lines in the middle of the screen. Hold down 'Y' (uppercase) until you see the next message ...",
// It's important to keep holding the key down since if the system is busy,
// the memory will zero itself before being outputted.
while out <> 89 {
eval,
}
clear-echo,
output;