Possible to use SN74689 emulation in BlueMSX?

Par Huey

Prophet (2694)

Portrait de Huey

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.

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Par Manuel

Ascended (19214)

Portrait de Manuel

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.

Par Huey

Prophet (2694)

Portrait de Huey

09-10-2011, 10:42

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

Par Manuel

Ascended (19214)

Portrait de Manuel

09-10-2011, 11:32

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

Par hap

Paragon (2042)

Portrait de hap

09-10-2011, 12:06

romMapperJoyrexPsg.c mayhaps?

Par Huey

Prophet (2694)

Portrait de Huey

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??

Par Sander

Founder (1871)

Portrait de Sander

10-10-2011, 09:38

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

Par Vincent van Dam

Hero (513)

Portrait de Vincent van Dam

10-10-2011, 11:48

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

Par Huey

Prophet (2694)

Portrait de Huey

10-10-2011, 11:54

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

Par Huey

Prophet (2694)

Portrait de Huey

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?