Changed how traces are handled so that if boot takes a little while we don't see a dump of BRK traces to STDOUT on startup

src/main/java/jace/apple2e/MOS65C02.java

@@ -1045,8 +1045,9 @@ public class MOS65C02 extends CPU {
         int pc = getProgramCounter();
 
         String traceEntry = null;
-        if (isTraceEnabled() || isLogEnabled() || warnAboutExtendedOpcodes) {
+        if (isSingleTraceEnabled() || isTraceEnabled() || isLogEnabled() || warnAboutExtendedOpcodes) {
             traceEntry = getState().toUpperCase() + "  " + Integer.toString(pc, 16) + " : " + disassemble();
+            captureSingleTrace(traceEntry);
             if (isTraceEnabled()) {
                 Logger.getLogger(getClass().getName()).info(traceEntry);
             }

src/main/java/jace/cheat/MetaCheat.java

@@ -309,6 +309,7 @@ public class MetaCheat extends Cheats {
 
     @Override
     public void tick() {
+        computer.cpu.performSingleTrace();
         if (fadeCounter-- <= 0) {
             fadeCounter = FADE_TIMER_VALUE;
             memoryCells.values().stream()
@@ -341,9 +342,6 @@ public class MetaCheat extends Cheats {
             CPU cpu = Emulator.computer.getCpu();
             int pc = cpu.getProgramCounter();
             String trace = cpu.getLastTrace();
-            if (!cpu.isLogEnabled()) {
-                cpu.traceLength = 1;
-            }
             switch (e.getType()) {
                 case EXECUTE:
                     cell.execInstructionsDisassembly.add(trace);

src/main/java/jace/core/CPU.java

@@ -72,14 +72,6 @@ public abstract class CPU extends Device {
         traceLog.add(line);
     }
     
-    public String getLastTrace() {
-        if (traceLog.isEmpty()) {
-            return "???";
-        } else {
-            return traceLog.get(traceLog.size()-1);
-        }
-    }
-
     public void dumpTrace() {
         computer.pause();
         ArrayList<String> newLog = new ArrayList<>();
@@ -167,4 +159,20 @@ public abstract class CPU extends Device {
     }
 
     abstract public void JSR(int pointer);
+
+    boolean singleTraceEnabled = false;
+    public String lastTrace = "START";
+    public void performSingleTrace() {
+        singleTraceEnabled = true;
+    }
+    public boolean isSingleTraceEnabled() {
+        return singleTraceEnabled;
+    }
+    public String getLastTrace() {
+        return lastTrace;
+    }
+    public void captureSingleTrace(String trace) {
+        lastTrace = trace;
+        singleTraceEnabled = false;
+    }
 }