minor scope tweaks, need phantomjs for wavedrom

doc/notes.txt

@@ -70,10 +70,10 @@ TODO:
 - fix WebAudio (https://news.ycombinator.com/item?id=18066474)
 - Safari: verilog scope doesn't work
 - share playable link w/ verilog?
-- no errors for verilog inline asm?
 - allow download of JSASM output
 - update bootstrap/jquery
 - clean BOM from verilog
+- $readmemb/h
 
 
 WEB WORKER FORMAT

package.json

@@ -14,6 +14,7 @@
     "jsdom": "^12.0.0",
     "lzg": "^1.0.0",
     "mocha": "^5.2.0",
+    "phantomjs": "^2.1.7",
     "typescript": "^3.0.1",
     "wavedrom-cli": "^0.5.0"
   },

presets/verilog/starfield.v

@@ -26,6 +26,7 @@ module starfield_top(clk, reset, hsync, vsync, rgb);
     .vpos(vpos)
   );
   
+  // enable LFSR only in 256x256 area
   wire star_enable = !hpos[8] & !vpos[8];
   
   // LFSR with period = 2^16-1 = 256*256-1
@@ -35,7 +36,7 @@ module starfield_top(clk, reset, hsync, vsync, rgb);
     .enable(star_enable),
     .lfsr(lfsr));
 
-  wire star_on = &lfsr[15:9];
+  wire star_on = &lfsr[15:9]; // all 7 bits must be set
   assign rgb = display_on && star_on ? lfsr[2:0] : 0;
 
 endmodule

src/platform/verilog.ts

@@ -671,6 +671,7 @@ var VerilogPlatform = function(mainElement, options) {
     if (trace_buffer) trace_buffer.fill(0);
     if (video) video.setRotate(gen.rotate ? -90 : 0);
     $("#verilog_bar").hide();
+    if (!this.hasvideo) this.resume(); // TODO?
   }
   tick() {
     gen.tick2();

src/waveform.ts

@@ -197,10 +197,11 @@ export class WaveformView {
     var x = 0;
     var y = 0;
     var lastval = -1;
+    var radix = this.hexformat ? 16 : 10;
     for (var i=0; i<data.length; i++) {
       var val = data[i];
-      if (printvals && val != lastval) {
+      if (printvals && val != lastval && x < w-100) { // close to right edge? omit
-        ctx.fillText(val.toString(), x+this.zoom/4, ycen);
+        ctx.fillText(val.toString(radix), x+this.zoom/4, ycen);
       }
       lastval = val;
       if (i>0)
@@ -229,7 +230,7 @@ export class WaveformView {
       var val = data[this.tsel - this.t0];
       ctx.textAlign = 'right';
       if (val !== undefined) {
-        var s = this.hexformat ? val.toString(16) : val.toString();
+        var s = val.toString(radix);
         ctx.fillText(s, w-fh, ycen);
       }
     }