Hey guys, it's a shame for me to miss such a thread here! I've already posted about possible GUS PnP Upgrade, so let me share some ideas here also. Sure, the IW78C21M1 chip is a 1 MiB Flash ROM. One can figure out its pinout on the GUS PnP PCB (Gravis actually provided for another - DIP - package …

IIRC, Slot A CPUs were identical to SECC1 as far as the cartridge was concerned.

Hey, I would be interested too.

http://www.ebay.com/itm/2-54mm-Pitch-2x3Pin-Female-to-Female-6-Wire-IDC-Flat-Ribbon-Cable-30cm-12-inch-/400739339942?pt=AU_CablesConnectors&hash=item5d4ded0ea6 Thanks.. So PcPci is the same as SB-Link right? I actually want to make my own if it is the case. How is the pinout if it is SB-Link in …

Another PCI YMF-724 Uhh... That PcPci connector. Is that used the same way as SB-Link? And if that is the case, how to hook it up with the SB-Link header on a Mobo? http://www.ebay.com/itm/2-54mm-Pitch-2x3Pin-Female-to-Female-6-Wire-IDC-Flat-Ribbon-Cable-30cm-12-inch-/400739339942?pt=AU_ …

While writing this reply and comparing the attached datasheets, I've come across another possible upgrade option: 4. More advanced InterWave revision - if the pin assignment between the two known InterWave revisions (Am78C201KC used in original Gravis boards and Am78C201AKC used in Compaq Ultra- …

Actually, that's exactly where my initial quest started (I've had a discussion in Russian here that led to my fruitful collaboration with hyperborean on that adapter). Such adapter will work on any InterWave-based card, but it will require hardware modifications made to the host card (the only one …

Hi all, It's my first topic here, but I've been lurking for quite a while already, so the time has come to finally begin posting :) Gravis sound cards, and especially the InterWave based ones, are among the most interesting retro-hardware parts for me. I've been thinking what Gravis could do to even …

If you are still interested, check this Re: Thinking of doing the 16mb GuS ram mod I've mentioned a PCB adapter we've designed in Russia. It was originally made for GUS 16mb upgrade, but I guess that it could be used on some 386 rigs as well.

Do you still have the card by any chance? 😀

Thanks to all of you! I will create a separate topic here when I have time - I'll upload some more hires pics as well as the board schematics. Would be very grateful for any ideas to be added to a possible improved revision (as it will surely be the final one - even a small batch of 50 PCBs does …

:) I knew you would love this. Actually we produced a small batch of those almost a year ago. The total quantity was 50 PCBs. As we had only 10 SIMM holders, only 10 adapters have been completed - and we divided between the two of us who carried out the whole project. The cable has been designed to …

*secretly* We have designed a beautiful GUS PnP Pro SIMM72 adapter here... We don't have a lot of them, so I haven't made up my mind to start selling them here and there. But you may consider a purchase, if you want. Please have a look at the attached pics.