public synchronized byte[] getExtendedRAM(int size) {
byte[] rv = null;
if (size > 0) {
if (this.ramExtended != null) {
if (size > this.ramExtended.length) {
rv = new byte[size];
Arrays.fill(rv, (byte) 0);
System.arraycopy(this.ramExtended, 0, rv, 0, this.ramExtended.length);
this.ramExtended = rv;
} else {
rv = this.ramExtended;
}
} else {
rv = new byte[size];
Arrays.fill(rv, (byte) 0);
this.ramExtended = rv;
}
}
return rv;
}
public FDC8272(DriveSelector driveSelector, int mhz) {
this.driveSelector = driveSelector;
this.mhz = mhz;
this.curCmd = Command.INVALID;
this.executingDrive = null;
this.dmaMode = false; // wird von RESET nicht beeinflusst
this.stepRateMillis = 16; // wird von RESET nicht beeinflusst
this.tStatesPerMilli = 0;
this.tStatesPerRotation = 0;
this.tStatesPerStep = 0;
this.debugLevel = 0;
this.dataBuf = null;
this.args = new int[9];
this.results = new int[7];
this.remainSeekSteps = new int[4];
this.seekStatus = new int[4];
this.ioLock = new Object();
this.ioTaskCmd = IOTaskCmd.IDLE;
this.ioTaskEnabled = true;
this.ioTaskNoWait = false;
this.ioTaskThread = new Thread(this, "JKCEMU FDC");
String text = System.getProperty("jkcemu.debug.fdc");
if (text != null) {
try {
this.debugLevel = Integer.parseInt(text);
} catch (NumberFormatException ex) {
}
}
this.ioTaskThread.start();
}