add 6800 timing state to tabulation

chip-6800/nodenames.js

@@ -73,6 +73,34 @@ ir7: 1277,
 // internal control signals
 sync: 1528,   // aka #decode_0
 
+// timing state signals
+Ts: 1309,
+Ta0: 879,
+Td0_0: 981,
+"#Te0": 868,
+"Te0.2": 866,
+Tg0: 12,
+Tx0: 850,
+Ta1: 838,
+Te1_0: 735,
+Tg1: 772,
+Tx1: 851,
+Ta2: 844,
+Tg2: 832,
+Tx2: 860,
+Tg3: 835,
+Tr3: 823,
+Tg4: 696,
+Tr4: 825,
+Tg5: 914,
+Tr5: 828,
+Tg6: 911,
+Tr6: 894,
+Tr7: 694,
+Tg7: 1081,
+Tg8: 891,
+Tr8: 697,
+
 // many other internal busses registers and signals
 abh0: 267,
 abh1: 258,

chip-6800/support.js

@@ -12,12 +12,12 @@ npwr = nodenames['vcc'];
 nodenamereset = 'reset';
 
 presetLogLists=[
-                ['cycle','phi1','phi2'],
+                ['cycle',],
                 ['ab','db','rw','vma','Fetch','pc','acca','accb','ix','sp','p'],
-                ['ir','sync','Execute'],    // instruction fetch and execution control
-                ['dbi','dbo','tmp'],        // internal state
-                ['idb','abh','abl','ablx'], // internal busses
-                ['irq','nmi',nodenamereset,'tsc','dbe','halt','ba'], // other pins
+                ['ir','sync','Execute','State'],			// instruction fetch and execution control
+                ['dbi','dbo','tmp'],       				// internal register-sized state
+                ['idb','abh','abl','ablx'],				// internal busses
+                ['irq','nmi',nodenamereset,'tsc','dbe','halt','ba'],	// other pins
         ];
 
 function setupTransistors(){
@@ -86,7 +86,7 @@ function initChip(){
 		setHigh('phi1');
 	}
 	setHigh(nodenamereset);
-	for(var i=0;i<18;i++){halfStep();} // avoid updating graphics and trace buffer before user code
+	for(var i=0;i<6;i++){halfStep();} // avoid updating graphics and trace buffer before user code
 	refresh();
 	cycle = 0;
 	trace = Array();
@@ -125,6 +125,33 @@ function readPstring(){
    return result;
 }
 
+// The 6800 state control is something like a branching shift register
+// ... but not quite like that
+TCStates=[
+        "Ts",
+        "Tx0",  "Tx1",   "Tx2",
+                                "Ta0", "Ta1", "Ta2",
+        "Td0_0",
+	"#Te0", "Te1_0",
+        "Tg0",  "Tg1",   "Tg2", "Tg3", "Tg4", "Tg5", "Tg6", "Tg7", "Tg8",
+                                "Tr3", "Tr4", "Tr5", "Tr6", "Tr7", "Tr8",
+];
+
+function listActiveTCStates() {
+	var s=[];
+	for(var i=0;i<TCStates.length;i++){
+		var t=TCStates[i];
+		// remove a leading hash, but invert the signal
+		// in any case, remove any trailing suffix
+		if(t[0]=="#"){
+			if(!isNodeHigh(nodenames[t])) s.push(t.slice(1,4));
+		} else {
+			if(isNodeHigh(nodenames[t])) s.push(t.slice(0,3));
+		}
+	}
+	return s.join("+");
+}
+
 function busToString(busname){
 	// takes a signal name or prefix
 	// returns an appropriate string representation
@@ -190,7 +217,7 @@ function chipStatus(){
 	}
 
 	setStatus(machine1, machine2, machine3);
-	if (loglevel>0) {
+	if (logThese.length>1) {
 		updateLogbox(logThese);
 	}
 	selectCell(ab);

chip-6800/testprogram.js

@@ -7,19 +7,19 @@ var consoleboxStream="";
 // for opcodes, see ftp://ftp.comlab.ox.ac.uk/pub/Cards/txt/6800.txt
 
 testprogram = [
-  0x01,              // NOP
-  0x01,              // NOP
-  0x01,              // NOP
   0xce, 0x43, 0x21,  // LDX #4321
   0x35,              // TXS
-  0xc6, 0x00,        // LDAA #$00
+  0xc6, 0xfb,        // LDAB #$FB
   0xbd, 0x00, 0x10,  // JSR $0010
-  0x7e, 0x00, 0x02,  // JMP $0002
+  0x7e, 0x00, 0x04,  // JMP $0004
+  0x01,              // NOP
+  0x01,              // NOP
+  0x01,              // NOP
   0x01,              // NOP
   0x08,              // INX
-  0x5a,              // DECB
+  0x4a,              // DECA
   0x7c, 0x00, 0x0f,  // INC $0F
   0x0d,              // SEC
-  0xc9, 0x02,        // ADCA #$02
+  0xc9, 0x02,        // ADCB #$02
   0x39,              // RTS
 ]

macros.js

@@ -471,7 +471,7 @@ function chipStatus(){
 			machine3 += " Chk:" + traceChecksum + ((traceChecksum==goldenChecksum)?" OK":" no match");
 	}
 	setStatus(machine1, machine2, machine3);
-	if (loglevel>0) {
+	if (logThese.length>1) {
 		updateLogbox(logThese);
 	}
 	selectCell(ab);
@@ -509,6 +509,8 @@ function goForN(n){
 		return;
 	}
 	running = false;
+	var start = document.getElementById('start');
+	var stop = document.getElementById('stop');
 	start.style.visibility = 'visible';
 	stop.style.visibility = 'hidden';
 }