variable inspection, bitmaps for verilog, active high hsync/vsync, powerup vs reset

presets/verilog/digits10.v

@@ -8,7 +8,7 @@ module digits10_case(digit, yofs, bits);
 
   wire [6:0] caseexpr = {digit,yofs};
   always @(*)
-    case (caseexpr)
+    case (caseexpr)/*{w:5,h:5,count:10}*/
       7'o00: bits = 5'b11111;
       7'o01: bits = 5'b10001;
       7'o02: bits = 5'b10001;
@@ -81,11 +81,9 @@ module digits10_array(digit, yofs, bits);
   
   reg [4:0] bitarray[10][5];
 
-  always @(*)
+  assign bits = bitarray[digit][yofs];
-    bits = bitarray[digit][yofs];
 
-  initial
+  initial begin/*{w:5,h:5,count:10}*/
-  begin
     bitarray[0][0] = 5'b11111;
     bitarray[0][1] = 5'b10001;
     bitarray[0][2] = 5'b10001;

presets/verilog/hvsync_generator.v

@@ -43,11 +43,10 @@ module hvsync_generator(
       else
         vpos <= 0;
 
-  reg vga_HS, vga_VS;
   always @(posedge clk)
   begin
-    vga_HS <= (hpos>=START_H_RETRACE && hpos<=END_H_RETRACE);
+    hsync <= (hpos>=START_H_RETRACE && hpos<=END_H_RETRACE);
-    vga_VS <= (vpos==START_V_RETRACE);
+    vsync <= (vpos==START_V_RETRACE);
   end
 
   always @(posedge clk)
@@ -55,9 +54,6 @@ module hvsync_generator(
     display_on <= (hpos<H_DISPLAY) && (vpos<V_DISPLAY);
   end
 
-  assign hsync = ~vga_HS;
-  assign vsync = ~vga_VS;
-
 endmodule
 
 `endif

src/pixed/pixeleditor.js

@@ -187,14 +187,14 @@ function PixelEditor(parentDiv, fmt, palette, initialData, thumbnails) {
 
 /////////////////
 
-var pixel_re = /([0#]?)([x$%])([0-9a-f]+)/gi;
+var pixel_re = /([0#]?)([x$%]|\d'b)([0-9a-f]+)/gi;
 
 function parseHexBytes(s) {
   var arr = [];
   var m;
   while (m = pixel_re.exec(s)) {
     var n;
-    if (m[2].startsWith('%'))
+    if (m[2].startsWith('%') || m[2].endsWith("b"))
       n = parseInt(m[3],2);
     else if (m[2].startsWith('x') || m[2].startsWith('$'))
       n = parseInt(m[3],16);
@@ -215,6 +215,8 @@ function replaceHexBytes(s, bytes) {
     li = pixel_re.lastIndex;
     if (m[2].startsWith('%'))
       result += m[1] + "%" + bytes[i++].toString(2);
+    else if (m[2].endsWith('b'))
+      result += m[1] + m[2] + bytes[i++].toString(2); // TODO
     else if (m[2].startsWith('x'))
       result += m[1] + "x" + hex(bytes[i++]);
     else if (m[2].startsWith('$'))

src/platform/verilog.js

@@ -139,17 +139,19 @@ var VerilogPlatform = function(mainElement, options) {
   var paddle_x = 0;
   var paddle_y = 0;
   var switches = [0];
+  var inspect_obj, inspect_sym;
+  var inspect_data = new Uint32Array(videoWidth * videoHeight);
 
   this.getPresets = function() { return VERILOG_PRESETS; }
 
   var RGBLOOKUP = [
-    0xff111111,
+    0xff222222,
-    0xff1111ff,
+    0xff2222ff,
-    0xff11ff11,
+    0xff22ff22,
-    0xff11ffff,
+    0xff22ffff,
-    0xffff1111,
+    0xffff2222,
-    0xffff11ff,
+    0xffff22ff,
-    0xffffff11,
+    0xffffff22,
     0xffffffff,
   ];
 
@@ -158,23 +160,56 @@ var VerilogPlatform = function(mainElement, options) {
     audio.addSingleSample(0+gen.spkr); // TODO: sync with audio freq
   }
 
+  function updateInspectionFrame() {
+    if (inspect_obj && inspect_sym) {
+      var COLOR_BIT_OFF = 0xffff3333;
+      var COLOR_BIT_ON  = 0xffffffff;
+      for (var y=0; y<videoHeight; y++) {
+        var val = inspect_data[y * videoWidth];
+        var i = y * videoWidth + 16;
+        do {
+          idata[i] = (val & 1) ? COLOR_BIT_ON : COLOR_BIT_OFF;
+          i -= 2;
+          val >>= 1;
+        } while (val != 0);
+      }
+    }
+  }
+
+  function updateInspectionPostFrame() {
+    if (inspect_obj && inspect_sym) {
+      var ctx = video.getContext();
+      var val = inspect_data[inspect_data.length-1];
+      ctx.fillStyle = "black";
+      ctx.fillRect(18, videoHeight-8, 30, 8);
+      ctx.fillStyle = "white";
+      ctx.fillText(val.toString(10), 20, videoHeight-1);
+    }
+  }
+
   function updateVideoFrame() {
-    var i=0;
+    var i=4; // TODO, start @ 0?
+    var trace=inspect_obj && inspect_sym;
     for (var y=0; y<videoHeight; y++) {
       gen.hpaddle = y > paddle_x ? 1 : 0;
       gen.vpaddle = y > paddle_y ? 1 : 0;
       for (var x=0; x<videoWidth; x++) {
         vidtick();
+        if (trace) {
+          inspect_data[i] = inspect_obj[inspect_sym];
+        }
         idata[i++] = RGBLOOKUP[gen.rgb];
       }
       var z=0;
-      while (gen.hsync && z++<videoWidth) vidtick();
       while (!gen.hsync && z++<videoWidth) vidtick();
+      while (gen.hsync && z++<videoWidth) vidtick();
     }
     var z=0;
-    while (gen.vsync && z++<videoWidth*80) vidtick();
     while (!gen.vsync && z++<videoWidth*80) vidtick();
+    while (gen.vsync && z++<videoWidth*80) vidtick();
+    updateInspectionFrame();
     video.updateFrame();
+    updateInspectionPostFrame();
   }
 
   var yposlist = [];
@@ -187,9 +222,9 @@ var VerilogPlatform = function(mainElement, options) {
       if (idata[i])
         idata[i] = 0; //<<= 1;
     }
-    var COLOR_SIGNAL = 0xff11ff11;
+    var COLOR_SIGNAL = 0xff22ff22;
-    var COLOR_BORDER = 0xff661111;
+    var COLOR_BORDER = 0xff662222;
-    var COLOR_TRANS_SIGNAL = 0xff116611;
+    var COLOR_TRANS_SIGNAL = 0xff226622;
     for (var x=0; x<videoWidth; x++) {
       gen.clk ^= 1;
       gen.eval();
@@ -221,11 +256,9 @@ var VerilogPlatform = function(mainElement, options) {
     video.updateFrame();
     // draw labels
     var ctx = video.getContext();
-    ctx.font = "8px TinyFont";
-    ctx.fillStyle = "white";
     for (var i=0; i<arr.length; i++) {
       var v = arr[i];
-      ctx.textAlign = 'left';
+      ctx.fillStyle = v.name == inspect_sym ? "yellow" : "white";
       ctx.fillText(v.name, 1, yposlist[i]);
       //ctx.textAlign = 'right';
       //ctx.fillText(""+gen[v.name], videoWidth-1, yposlist[i]);
@@ -240,6 +273,10 @@ var VerilogPlatform = function(mainElement, options) {
     // TODO
     video = new RasterVideo(mainElement,videoWidth,videoHeight);
     video.create();
+    var ctx = video.getContext();
+    ctx.font = "8px TinyFont";
+    ctx.fillStyle = "white";
+    ctx.textAlign = "left";
     setKeyboardFromMap(video, switches, VERILOG_KEYCODE_MAP);
 		$(video.canvas).mousemove(function(e) {
 			paddle_x = clamp(8,240,Math.floor(e.offsetX * video.canvas.width / $(video.canvas).width() - 20));
@@ -283,10 +320,8 @@ var VerilogPlatform = function(mainElement, options) {
     var base = new VerilatorBase();
     gen = new mod(base);
     gen.__proto__ = base;
-    output.code = null;
-    output.ports_signals = output.ports.concat(output.signals);
     current_output = output;
-    this.reset();
+    this.poweron();
   }
 
   this.isRunning = function() {
@@ -301,14 +336,37 @@ var VerilogPlatform = function(mainElement, options) {
     if (gen.spkr !== undefined) audio.start();
   }
 
-  this.reset = function() {
+  this.poweron = function() {
     gen._ctor_var_reset();
+    this.reset();
+  }
+  this.reset = function() {
     gen.reset2();
   }
   this.getToolForFilename = function(fn) {
     return "verilator";
   }
   this.getDefaultExtension = function() { return ".v"; };
+
+  this.inspect = function(name) {
+    if (!gen) return;
+    if (name && !name.match(/^\w+$/)) return;
+    var val = gen[name];
+    if (val === undefined && current_output.code) {
+      var re = new RegExp("(\\w+__DOT__" + name + ")\\b", "gm");
+      var m = re.exec(current_output.code);
+      if (m) {
+        name = m[1];
+        val = gen[name];
+      }
+    }
+    if (val !== undefined) {
+      inspect_obj = gen;
+      inspect_sym = name;
+    } else {
+      inspect_obj = inspect_sym = null;
+    }
+  }
 };
 
 function traceTiming() {

src/ui.js

@@ -189,10 +189,27 @@ function newEditor(mode) {
       setCode(editor.getValue());
     }, 200);
   });
+  editor.on('cursorActivity', function(ed) {
+    var start = editor.getCursor(true);
+    var end = editor.getCursor(false);
+    if (start.line == end.line && start.ch < end.ch) {
+      var name = editor.getSelection();
+      inspectVariable(editor, name);
+    } else {
+      inspectVariable(editor);
+    }
+  });
   scrollProfileView(editor);
   editor.setOption("mode", mode);
 }
 
+function inspectVariable(editor, name) {
+  var val;
+  if (platform.inspect) {
+    platform.inspect(name);
+  }
+}
+
 function getCurrentPresetTitle() {
   if (current_preset_index < 0)
     return "ROM";
@@ -1105,7 +1122,13 @@ function lookBackwardsForJSONComment(line, req) {
         var pos0 = start.ch;
         line--;
         while (++line < editor.lineCount()) {
-          if (editor.getLine(line).indexOf(';') >= pos0) {
+          var l = editor.getLine(line);
+          var endsection;
+          if (platform_id == 'verilog')
+            endsection = l.indexOf('end') >= pos0;
+          else
+            endsection = l.indexOf(';') >= pos0;
+          if (endsection) {
             var end = {line:line, ch:editor.getLine(line).length};
             return {obj:obj, start:start, end:end};
           }