private void processOrder0()
{
BCD10 b;
if (accB > 0)
{
effectiveOperand.add(accumulators[accB]);
}
if (accA == 0)
{
accumulators[0].set(controlBoxScript.getKeyboard());
}
b = new BCD10(effectiveOperand);
if (siriusOpcodeLow >= 5)
{
b.shiftLeft(4);
}
switch (siriusOpcodeLow)
{
case 0:
case 5:
accumulators[accA].add(b);
flagOVR |= BCD10.flagOVR;
break;
case 1:
case 6:
accumulators[accA].sub(b);
flagOVR |= BCD10.flagOVR;
break;
case 2:
case 7:
accumulators[accA].negSub(b);
flagOVR |= BCD10.flagOVR;
break;
case 3:
case 8:
accumulators[accA].negAdd(b);
flagOVR |= BCD10.flagOVR;
break;
case 4:
case 9:
accumulators[accA].set(b);
break;
}
}
private void processOrder2()
{
BCD10 b;
bool wasNegative;
if (accB > 0)
{
effectiveOperand.add(accumulators[accB]);
}
if (accA == 0)
{
accumulators[0].set(controlBoxScript.getKeyboard());
}
b = new BCD10(effectiveOperand);
if (siriusOpcodeLow >= 5)
{
b.shiftLeft(4);
}
wasNegative = accumulators[accA].isNegative();
flagOVR |= (accumulators[accA].digits[9] != 0 && accumulators[accA].digits[9] != 9);
for (int i = 9; i > 0; i--)
{
accumulators[accA].digits[i] = accumulators[accA].digits[i - 1];
}
accumulators[accA].digits[0] = 0;
flagOVR |= (wasNegative != accumulators[accA].isNegative());
switch (siriusOpcodeLow)
{
case 0:
case 5:
accumulators[accA].add(b);
flagOVR |= BCD10.flagOVR;
break;
case 1:
case 6:
accumulators[accA].sub(b);
flagOVR |= BCD10.flagOVR;
break;
case 2:
case 7:
accumulators[accA].negSub(b);
flagOVR |= BCD10.flagOVR;
break;
case 3:
case 8:
accumulators[accA].negAdd(b);
flagOVR |= BCD10.flagOVR;
break;
case 4:
case 9:
accumulators[accA].digits[0] = b.digits[9];
break;
}
}
