Possible to use SN74689 emulation in BlueMSX?

Prophet (2694)

08-10-2011, 15:12

BlueMSX emulates the Colecovision (which uses the SN74689).
Is is possible to add the SN74689 to a normal MSX setup in BlueMSX?

I really would like to do some experiments with it.

Por Manuel

Ascended (19298)

08-10-2011, 17:54

I think you would need to do some coding to get that done. You'll have to specify how this device connects to the MSX, for instance.

Por Huey

Prophet (2694)

09-10-2011, 10:42

So it's not possible to mix the Colecovision and e.g. MSX turbo-r with each other.

Por Manuel

Ascended (19298)

09-10-2011, 11:32

That's what I would expect, but I'm far from a blueMSX expert. Maybe hap knows?

Por hap

Paragon (2042)

09-10-2011, 12:06

romMapperJoyrexPsg.c mayhaps?

Por Huey

Prophet (2694)

09-10-2011, 13:08

The Joyrex PSG cartridge is a cartridge created by Vincent van Dam with a ColecoVision PSG on it. You can therefore use MSX trackers to compose music for ColecoVision.

Excellent! Thanks!

port 0xff??

Por Sander

Founder (1871)

10-10-2011, 09:38

Franky and PlaySoniq also contain a compatible SN74689 psg (as part of the Sega VDP).

Por Vincent van Dam

Hero (513)

10-10-2011, 11:48

Interesting requirement ;-)
The port is mapped to $f0 on blueMSX ($f0 = blueMSX stub, $ff = ColecoVision).

Por Huey

Prophet (2694)

10-10-2011, 11:54

@Vincent: Thanks! I figured you used it for the Colecovision conversion(s). Hence the 0xff assumption.

Por Huey

Prophet (2694)

18-10-2011, 15:54

Franky and PlaySoniq also contain a compatible SN74689 psg (as part of the Sega VDP).

On Fanky and PlaySonig it is both 0x48?

And SN74689 is hearable through normal MSX output or only through Franky/PlaySoniq?