@Jeff:
This page says it only supports special 68-pin 1MB non-multiplexed 40ns simms. I do wonder about the 68-pin part though, do you have the possibility to count the pin-number on a simm on it? The reason I am wondering is that "regular" gvp-simms had 64 pins.
(edit):
No need to count on the real thing, I just counted the number of pins on the photo on the page I linked too and it is indeed 68-pin simms. Thus a "regular" gvp-simm wont even fit physically.
/Patrik