protected int readHWReg(Size size, int addr) {
int reg = addr - 0x2000;
if (mmap[reg] == null) {
// Log.err(String.format("Read Memory Mapped register 0x%04x not implemented.", addr));
if (Settings.get(Settings.MEM_THROW_INVALID_ADDR).equals("true"))
throw new RuntimeException(
String.format("Read Memory Mapped register 0x%04x not implemented.", addr));
return 0;
}
if (size == Size.SHORT) {
if (mmap[reg + 1] == null) {
// mmap[addr-0x2000] = new UnimplementedHardwareRegister();
// Log.err(String.format("Read Memory Mapped register 0x%04x not implemented.", addr+1));
if (Settings.get(Settings.MEM_THROW_INVALID_ADDR).equals("true"))
throw new RuntimeException(
String.format("Read Memory Mapped register 0x%04x not implemented.", addr + 1));
return 0;
}
// LOW ALWAYS GOES FIRST
int val = mmap[reg].getValue();
val |= mmap[reg + 1].getValue() << 8;
return val;
} else {
return mmap[reg].getValue();
}
}
protected void writeHWReg(Size size, int addr, int value) {
int reg = addr - 0x2000;
if (mmap[reg] == null) {
mmap[reg] = new UnimplementedHardwareRegister();
Log.err(String.format("Write Memory Mapped register 0x%04x not implemented.", addr));
if (Settings.get(Settings.MEM_THROW_INVALID_ADDR).equals("true"))
throw new RuntimeException(
String.format("Write Memory Mapped register 0x%04x not implemented.", addr));
}
if (size == Size.SHORT) {
if (mmap[reg + 1] == null) {
mmap[reg + 1] = new UnimplementedHardwareRegister();
Log.err(String.format("Write Memory Mapped register 0x%04x not implemented.", addr + 1));
if (Settings.get(Settings.MEM_THROW_INVALID_ADDR).equals("true"))
throw new RuntimeException(
String.format("Write Memory Mapped register 0x%04x not implemented.", addr + 1));
}
/*
* Low goes first unless you want games to look like they're being
* played through Kanye's shutter shades.
*/
mmap[reg].setValue(value & 0x00FF);
mmap[reg + 1].setValue((value & 0xFF00) >> 8);
} else {
mmap[reg].setValue(value);
}
}
public void dumpWRAM() {
if (Settings.get(Settings.DEBUG_DIR) != null) {
try {
String fname = Settings.get(Settings.DEBUG_DIR) + "/wram.bin";
FileOutputStream fos = new FileOutputStream(fname);
for (int i = 0; i < wram.length; i++) fos.write(wram[i]);
fos.close();
} catch (IOException e) {
System.out.println("Unable to dump wram");
e.printStackTrace();
}
}
}
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();
}
/**
* Checks if a ROM url has been specified by an applet tag or in the properties file. If so, loads
* and starts the rom
*/
private void checkForGame() {
String loc = Settings.get(Settings.ROM_URL);
if (loc != null) {
System.out.println("Loading from url: " + loc);
// Attempt to load from url
InputStream is = Util.getStreamFromUrl(loc);
boolean isZip = loc.endsWith(".zip");
if (is != null) {
runGame(is, isZip);
}
}
}