Re: [hatari-devel] Enabling of ACIA IRQs

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 31/05/2013 17:06, Eero Tamminen a écrit :
> Hi,
>
> Atari forum had this comment:
> -----
> Finally i managed to get cubase lite to replay midi on hatari. There are two
> potential pitfalls: 1) The acia irq handling only works if the midi device
> emulation is actually enabled. 2) It needs to be enabled at startup. Just
> enabling it at runtime won't make it work. After that cubase lite sends data
> to the midi out port.
> -----
>
> See:
> http://www.atari-
> forum.com/viewtopic.php?f=51&t=25081&sid=8a5a328dad12066f3a25bbd57dd4fdc3
>
>
> Something to fix for v1.7?
>
>
> 	- Eero

Hello

I don't use midi, so I never really noticed.

In midi.c Midi_Data_WriteByte(), we have :

        if (!ConfigureParams.Midi.bEnableMidi)
                return;

So, if midi is not enabled, byte are not processed and nothing will 
happen (including irq).

As for 2), maybe the files to communicate via midi are only opened when 
Hatari starts, not later when you check/uncheck ? But Midi_Init() 
already seems to be called in change.c, so I don't know what is missing.


Nicolas