* @throws ResourceNotFreeException
* @throws DriverException
*/
public DefaultFDC(ResourceOwner owner, boolean primary)
throws ResourceNotFreeException, DriverException {
IRQResource irq = null;
DMAResource dma = null;
IOResource io1 = null;
IOResource io2 = null;
MemoryResource dmaMem = null;
if (primary) {
startPort = PRIMARY_START_PORT;
} else {
startPort = SECONDARY_START_PORT;
}
// Try to read the floppy parameters in CMOS
try {
final CMOSService cmos = InitialNaming.lookup(CMOSService.NAME);
final int fd = cmos.getRegister(CMOSConstants.CMOS_FLOPPY_DRIVES);
driveParams = new FloppyDriveParameters[NR_DRIVES];
diskChanged = new boolean[NR_DRIVES];
for (int i = 0; i < NR_DRIVES; i++) {
final int cmosType;
if (i == 0) {
cmosType = (fd >> 4) & 0xf;
} else if (i == 1) {
cmosType = (fd & 0xf);
} else {
cmosType = 0;
}
driveParams[i] = getDriveParam(cmosType);
diskChanged[i] = true;
}
} catch (NameNotFoundException ex) {
throw new ResourceNotFreeException("Cannot find CMOSService", ex);
}
try {
final ResourceManager rm = InitialNaming.lookup(ResourceManager.NAME);
final DMAManager dmaService = InitialNaming.lookup(DMAManager.NAME);
// PRESERVE THIS CLAIMING ORDER!
irq = rm.claimIRQ(owner, FLOPPY_IRQ, this, false);
dma = dmaService.claimDMAChannel(owner, FLOPPY_DMA);
io1 = claimPorts(rm, owner, startPort + OFFSET_RANGE1, NR_PORTS_RANGE1);
io2 = claimPorts(rm, owner, startPort + OFFSET_RANGE2, NR_PORTS_RANGE2);
dmaMem = rm.claimMemoryResource(owner, null, 64 * 1024, ResourceManager.MEMMODE_ALLOC_DMA);
} catch (NameNotFoundException ex) {
throw new ResourceNotFreeException("Cannot find ResourceManager or DMAService", ex);
} catch (ResourceNotFreeException ex) {
if (dmaMem != null) {
dmaMem.release();
}
if (io2 != null) {
io2.release();
}
if (io1 != null) {
io1.release();
}
if (dma != null) {
dma.release();
}
if (irq != null) {
irq.release();
}
throw ex;
}
this.primary = primary;
this.irq = irq;