public static void cycle(long count) throws Exception {
long instCount = 0;
// Do as many instructions as set in properties file
// Will execute indefinitely if instruction count is negative
try {
while ((instCount < count || count < 0) && running) {
if (pause && !advanceFrameOnce) continue;
CPU.cycle();
instCount++;
}
} catch (Exception err) {
// Finish timing and print stats before throwing error up
timeEnd = new Date().getTime();
System.out.println("Total time: " + ((timeEnd - timeBegin) / 1000) + " seconds");
System.out.println("Instructions performed: " + instCount);
System.out.println("Cycles performed: " + Timing.getCycles());
System.out.println(
"Average speed: "
+ (((Timing.getCycles() + 0f) / ((timeEnd - timeBegin + 0f) / 1000f))
/ (1024f * 1024f))
+ " MHz");
System.out.println(
"Average speed: "
+ (((Timing.getCycles() + 0f) / ((timeEnd - timeBegin + 0f) / 1000f)))
+ " Hz");
printMMaps();
throw err;
}
Core.instCount += instCount;
}
public static void run(InputStream is, boolean isZip) throws Exception {
init(is, isZip);
instCount = 0;
maxInstructions = Long.parseLong(Settings.get(Settings.CORE_MAX_INSTRUCTIONS));
// Load save file if found
if (Settings.isSet(Settings.SAVE_PATH)) {
InputStream saveStream = Util.getStreamFromUrl(Settings.get(Settings.SAVE_PATH));
if (saveStream != null) {
mem.loadSram(saveStream);
}
}
// Execute and time game
if (Log.instruction.enabled() && Settings.get(Settings.CPU_ALT_DEBUG) == "false") {
Log.instruction("====CPU Execution====");
Log.instruction(
"romAdr pbr:pc op CPU Status args Instruction");
Log.instruction(
"------ ------- -- ------------------------------- --------------- -----------");
}
timeBegin = new Date().getTime();
cycle(maxInstructions);
timeEnd = new Date().getTime();
running = false;
// Print run stats
System.out.println("Total time: " + ((timeEnd - timeBegin) / 1000) + " seconds");
System.out.println("Instructions performed: " + instCount);
System.out.println("Cycles performed: " + Timing.getCycles());
System.out.println(
"Average speed: "
+ (((Timing.getCycles() + 0f) / ((timeEnd - timeBegin + 0f) / 1000f)) / (1024f * 1024f))
+ " MHz");
System.out.println(
"Average speed: "
+ (((Timing.getCycles() + 0f) / ((timeEnd - timeBegin + 0f) / 1000f)))
+ " Hz");
printMMaps();
PPU.dumpVRAM();
mem.dumpWRAM();
APUMemory.dump();
renderScreen();
}
public int read(Size size, int bank, int addr) {
boolean fastrom = false;
// Determine speed by bank
if (bank >= 0x80) {
fastrom = true;
}
if ((bank == 0x00 || bank == 0x80) && addr >= 0x4000 && addr <= 0x41FF) {
Timing.cycle(12); // 12 master cycles to access these
return get(size, bank, addr);
}
if (fastrom) { // 6 cycles
Timing.cycle(6);
return get(size, bank, addr);
} else { // 8 cycles
Timing.cycle(8);
return get(size, bank, addr);
}
}
