|RE: LMC1992/Microwire test WAS: [hatari-devel] No sound in the Pacemaker Demo|
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- To: "hatari-devel@xxxxxxxxxxxxxxxxxxx" <hatari-devel@xxxxxxxxxxxxxxxxxxx>
- Subject: RE: LMC1992/Microwire test WAS: [hatari-devel] No sound in the Pacemaker Demo
- From: "Konador, Cyprian" <cyprian.konador@xxxxxx>
- Date: Wed, 4 Jun 2014 21:45:53 +0000
- Accept-language: pl-PL, en-US
- Thread-index: Ac9/zHPIVc5RJrrwTm2DHM/u1gRvYVyGbnGbXHGz49ARl3chqYZTnfhQ
- Thread-topic: LMC1992/Microwire test WAS: [hatari-devel] No sound in the Pacemaker Demo
Ops, it seems that you caught me. I should completely remove Set-up LMC1992 section, because it interferes my test... Thanks for that hint.
Ok, I'll check your code and also I'll redo my tests. Unfortunately I have to wait with those tests until tomorrow evening.
From: David Savinkoff [mailto:dsavnkff@xxxxxxxxx]
Sent: Wednesday, June 04, 2014 11:13 PM
Subject: RE: LMC1992/Microwire test WAS: [hatari-devel] No sound in the Pacemaker Demo
Could you try this modified code to see if you get YM sound.
I'm expecting no sound because I don't expect $C1FF/$8000 to work.
----- Cyprian Konador wrote:
> > From: David Savinkoff
> > Sent: Wednesday, June 04, 2014 8:00 PM
> > ----- Cyprian Konador wrote:
> > > Hi All,
> > >
> > > I've just checked that case on real MSTE and combination $ C1FF/$8000 gives the same result as $401/$7ff
> > Can you explain what is happening ?
> > Why would one use $C1FF/$8000 when one could use $401/$7FF ?
> > (I've never programmed a STe)
> Actually, I have no idea why one could use it, but Nicolas found out that Pacemaker Demo use that strange combination. Therefore IMO would be nice to implement that behavior in Hatari.
> Interesting question is why it works. We know that LMC192 should receive 11 bit frame from Microwire. Maybe Shifter/Microwire in case of needs complements the frame to eleven with '1'?
> -----Original Message-----
> >From: Nicolas Pomarède
> >Sent: Thursday, May 29, 2014 8:53 PM
> > >Am 29.05.2014 20:00, schrieb Jerome Vernet:
> > >
> > > Still no sound in the Pacemaker Demo.
> > >
> >It seems there's a problem when microwire mixer is set.
> >Demo set mask to 0xc1ff and data to 0x8000, which should decode as
> >command 10 000 000000 and set mixer=0.