tt reset reg, comment

sylefeb · Sep 1, 2024 · 5c065f2 · 5c065f2
1 parent 161cf83
commit 5c065f2
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/frameworks/boards/tinytapeout/tinytapeout.v b/frameworks/boards/tinytapeout/tinytapeout.v
@@ -25,6 +25,12 @@ module tt_um_silice (
 
   // https://tinytapeout.com/specs/pinouts/
 
+  // register reset
+  reg rst_n_q;
+  always @(posedge clk) begin
+    rst_n_q <= rst_n;
+  end
+
   M_main main(
 
     .in_ui(ui_in),
@@ -35,7 +41,7 @@ module tt_um_silice (
     .inout_uio_oe(uio_oe),
 
     .in_run(1'b1),
-    .reset(~rst_n),
+    .reset(~rst_n_q),
     .clock(clk)
   );
 

diff --git a/src/Algorithm.cpp b/src/Algorithm.cpp
@@ -4827,6 +4827,9 @@ void Algorithm::updateAndCheckDependencies(t_vio_dependencies& _depds, const t_v
           msg += "Consider inserting a sequential split with '++:'\n\n";
         }
         msg += notes;
+        /// TODO, FIXME: this considers all accesses to an array as a single
+        /// vio, while accessing different entries (and even bits) should be
+        /// allowed
         reportError(sloc,msg.c_str(), w.c_str());
       }
       // check if any one of the combinational outputs the var depends on, depends on this same var (cycle!)