Re: [hatari-devel] ikbd overrun when using midi (Bad Mood for Falcon)

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 12/11/2022 à 20:26, Thomas Huth a écrit :
> Am Fri, 11 Nov 2022 23:28:16 +0100
> schrieb Nicolas Pomarède <npomarede@xxxxxxxxxxxx>:
> [...]
> > There was a bug in Hatari : if one of the 2 ACIAs cleared its IRQ, then
> > it cleared the IRQ on GPIP4, instead of checking if IRQ was still set on
> > the other ACIA and keeping IRQ set on GPIP4 :(
> >
> > This would definitely create some problems when IKBD and MIDI bytes are
> > sent/received at the same time.
> >
> > This could be the reason for Bad Mood's loss of IKBD bytes, but also for
> > MidiMaze not working after a while.
>
> FWIW, this seems to have fixed the problem with the 2-player mode via MIDI
> in the game Oxyd 2. Great work, thank you!

good to know, feel free to update the compatibility.html file with this 
case if it was present.

As this could create problem with programs using ikbd and midi at the 
same (the most bytes sent/received, the most likey some irq would be 
lost) it's also possible it fixes some problem in Midi editors such as 
'Notator' or 'M', but I don't have any midi knowledge to check this on 
real midi files.

Nicolas