Dave-
I've been planning to do this same thing for some time now- I have three 1mb
boards, and will try combining two of them into one 2mb board, by
transplanting the chips. There also appear to be extra pads for bypass caps,
and I was going to transplant those as well- I'm hoping they all have the same
values. I made a cursory search for a source for the RAM chips, and couldn't
find any either, tho if someone had the pinouts for the existing chips, we
might find a pin-for-pin alternative... anyone? I've also wondered if it might
be possible to "piggy-back" chips, if there is an extra address line
available.
Anyway- please be sure to send out the results of your experiment ASAP- if you
end up with smoked boards, I might have second thotz about trying it myself (I
don't have much experience removing/resoldering surface-mount devices)
joel. JAYCOCK@KECK.HAWAII.EDU
W.M. Keck Observatory
Mauna Kea, Hawaii