[Coco] MAME Interrupt Bug

[Mark McDougall]

On 19/03/2017 2:11 AM, Glen Hewlett wrote:

>> LDA     #%01001100              *
>>        STA     $FF90                   * CoCo 3 Mode, MMU Enabled,
>> GIME IRQ Disabled, GIME FIRQ Disabled, Vector RAM at FEXX enabled,
>> Standard SCS Normal, ROM Map 16k Int, 16k
>>        LDA     $FF92

If you're inside an ISR and ACKing IRQs (LDA $FF92) just be aware that 
you're possibly missing (pending) interrupts. This is also probably why 
it's not crashing in MAME.

Regards,

-- 
Mark McDougall
<http://retroports.blogspot.com.au>