[Coco] 6809 Code Needed For Use With The AY-3-8910 Chip

camillus Blockx camillus.b.58 at gmail.com
Wed Jul 18 16:10:39 EDT 2012


MAYBE THIS MAY HELP<

http://www.vdsteenoven.com/aquarius/psgprog.html

Making a 6809 code routine would not be that diffecult.

some address space decoding for a pia (6821) ( 4 subseqent addresses I
believe it needs and hook up the chip.

Looks like it is all done in direct addressing mode, so  lda# <number>
would load the accumelator A with the <number> ans sta, <n> would place it
where you want it on the ports to control the chip.

good luck

cba


On Wed, Jul 18, 2012 at 4:18 AM, Kip Koon <computerdoc at sc.rr.com> wrote:

> Hi All,
>
>
>
> Does anyone have any 6809 code that could be used with the AY-3-8910 sound
> generator chip?
>
>
>
> Kip
>
>
>
>
>
>
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