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Writes to the pending register appear to be able to clear interrupts too.

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This commit is contained in:
Thomas Harte 2019-10-25 22:46:30 -04:00
parent 2207638287
commit a8d481a764
1 changed files with 12 additions and 2 deletions
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14
Components/68901/MFP68901.cpp
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@ -94,8 +94,18 @@ void MFP68901::write(int address, uint8_t value) {
interrupt_enable_ = (interrupt_enable_ & 0xff00) | value;
update_interrupts();
break;
case 0x05: LOG("Write: interrupt pending A (no-op?) " << PADHEX(2) << int(value)); break;
case 0x06: LOG("Write: interrupt pending B (no-op?) " << PADHEX(2) << int(value)); break;
case 0x05:
LOG("Write: interrupt pending A " << PADHEX(2) << int(value));
interrupt_pending_ = (interrupt_pending_ & 0x00ff) | (value << 8);
interrupt_in_service_ &= 0x00ff | (value << 8);
update_interrupts();
break;
case 0x06:
LOG("Write: interrupt pending B " << PADHEX(2) << int(value));
interrupt_pending_ = (interrupt_pending_ & 0xff00) | value;
interrupt_in_service_ &= 0xff00 | value;
update_interrupts();
break;
case 0x07: LOG("Write: interrupt in-service A (no-op?) " << PADHEX(2) << int(value)); break;
case 0x08: LOG("Write: interrupt in-service B (no-op?) " << PADHEX(2) << int(value)); break;
case 0x09: