I bought a second card which didn't work either. This one was an easier fix though. It is GUS Classic v2.2, I can't find a good picture of the PCB scan but basically there is a stack of resistor legs soldered directly to capacitors near the CD input jack. One of those had slightly broken off when I …

Will this module work a GUS MAX? It uses SOJ but I'm not sure the number of pins, etc.

I'm having the same issues. If I try to select any IRQ anything it just hangs and doing the memory test it will hang at "determining memory size..." and I even removed all the memory banks, swapped the originals with other ones that I had bought to upgrade it! Set every bios to fail safe, reset the …

Memory Ten had what I needed. Thanks for your help!

Here it is at http://www.memoryten.com/004932.htm but it says 80ns but the -7 would clearly indicate 70ns? Lol. Hopefully it would be a typo.

I found your chip, it requires a $25 minimum order and $7.50/sh at http://www.questcomp.com/QuestdetailsInv.aspx … YesOnly&inv=yes I'll try AmiBay first though, the card wont be arriving for a week or so.

I know its SOJ, but you could hand solder the wires to the board. Wouldn't be fun but it could work. I'll try amibay.com and post updates on it. The games I wanted to play with this card like Doom, Heretic, etc. require 1mb upgrade or else it could potentially lockup. On a side note, how rare were …

I think you could use 16bit stuff too but you'd have to ground the extra data lines to complete the circuit. I'll probably had to get that mosel vitelic and just make a network of wires all over the place. 256k x 4bit searches pull up 80, 100 and 120ns which is all useless for this.

You need PDIP. I've done more reasearch. It has to be 20pin 256k 4bit 70ns DRAM. I've found this http://www.ebay.com/itm/Mosel-Vitelic-V53C104DK66-256K-x-4bit-DRAM-8pcs-/140360333573 but you would need to solder it somehow to the board, which I'm more than willing to do. I'm wondering if someone …

http://www.gravisultrasound.org/catalog/img/gus-24f-big.jpg

This is for Gravis Ultrasound v2.4? Not sure on the number of pins or if it was all the same between revisions, etc.