I don't know that much about PCB's and chips but this seems too simple for an audio recording add-on. It connects to the ISA bus through the GUS and has CD in it's name... Isn't this some kind of CD-ROM interface?

It seems to be only for connecting a CD drive to the machine. I don't know what sort of CD interface is being used.

Thanks very much for all the helpful advice! I mistakenly thought it might be for recording, because I looked at the wikipedia entry for the GUS, and it mentioned a recording daughterboard add-on, so and I assumed it was this. So sorry, my bad!

I wonder if the wikipedia entry could be expanded, to mention this CD drive add-on daughterboard?

Yes, it would be interesting to figure out what type of CD-ROM it supports. It would be nice it was for ATAPI, rather than a proprietory device.

Thanks a lot.

Here is mention of mitsumi, panasonic, and possibly sony daughtercards.
http://www.gravisultrasound.com/files/UDD/vol … /1994-03-22.TXT

From the looks of it.. I am guessing mitsumi, but I could be wrong.

Thanks! $30 direct! 😀

I can't say much about your card as such, but it might not be one of those $30 direct from Gravis ones. I recently came across a Gravis branded Sony/Mitsumi interface daughtercard, and it looks very different from this one. Soundware could've produced their own (licensed or not), since it's only really piggybacking of the GUS for ISA pins rather than interfacing with the card itself.

My daughtercard is still in the mail for now, I'll create a dedicated topic with images once I have it on hand, hopefully next week. I know I'm replying to an older post, but I thought it made sense for the purposes of documentiation.