Re: SFX sound expander

From: Levente Hársfalvi (
Date: 1998-12-13 15:09:45


Richard Atkinson wrote:
> Hi all. My latest acquisition is the Commodore Sound Expander for the
> 64/128. It is a cartridge port device the same shape as the Magic Voice
> and inside there is a Yamaha YM3526 FM synthesis chip, some logic for the
> optional music keyboard port and a bit of analogue circuitry to output the
> signal.

Heey, is that chip like a Yamaha OPL2?

> I think these units are fairly rare; anyway I want to find out as much as
> I can about its registers. There is the possibility of routing the output
> through the SID chip, so you can have 3 SID channels, 8 FM channels and
> the filter applied to either of them. Does anyone have any documentation
> on this thing? As always, the Commodore-supplied software and docs are a
> little lacking, to put it mildly.

If I'm right, and it's an OPL, then it's easy - there are a lot of docs
about, say, programming the Adlib soundcard and the Soundblasters which
have the same soundchip.


This message was sent through the cbm-hackers mailing list.
To unsubscribe: echo unsubscribe | mail

Archive generated by hypermail 2.1.1.