public void ID()
throws RAWException, IrregularWriteOperationException, IrregularStringOfBitsException {
// if source registers are valid passing their own values into temporary registers
Register rs = cpu.getRegister(params.get(RS_FIELD));
Register rt = cpu.getRegister(params.get(RT_FIELD));
if (rs.getWriteSemaphore() > 0 || rt.getWriteSemaphore() > 0) throw new RAWException();
TR[RS_FIELD] = rs;
TR[RT_FIELD] = rt;
// locking the destination register
cpu.getLO().incrWriteSemaphore();
cpu.getHI().incrWriteSemaphore();
}
