Can all registered uses please login, even just for a few minutes..
It helps build a picture where our "good traffic" is coming from..
Thanks :)
It helps build a picture where our "good traffic" is coming from..
Thanks :)
Put 2 YM2149 into the ST
Re: Put 2 YM2149 into the ST
Similar project was done here also viewtopic.php?f=29&t=4124
Re: Put 2 YM2149 into the ST
Should be quite possible to drive two YM2149 off printer port. I did something for Sinclair QL a few years ago when I wrote PT3 (& others) chip player for dual chips. (BUSY for Atari is pin11, AFAIK)
- 2PSG.png (252 KiB) Viewed 847 times
-
unseenmenace
- Posts: 19
- Joined: Thu Apr 01, 2021 9:02 am
Re: Put 2 YM2149 into the ST
This is exactly what I've been working on and as well as the thread Exxos linked there's this one over on AF:fenarinarsa wrote: Thu May 09, 2024 9:38 pmAnother solution that would be easier to implement is actually to use a YM2203 which is YM2149 compatible. The pinout is different but basically with a small adapter it could act like a YM2149 replacement. Then by adding a small DAC you can add 3 FM channels.
The extra registers are addressed the same way than on YM2149.
https://www.atari-forum.com/viewtopic.p ... 0&start=75
I'm very close to getting a PCB ordered and it will look something like this:
- PCB.gif (296.75 KiB) Viewed 698 times