Is there any sense in providing a slightly more MI interface for
this? I'm thinking about some of the other ports which have
some fast RAM and some much slower like atari and amiga, and
maybe even x86 boxes used as servers which sometimes end up
with large RAM (512M) video cards... :)
Actually... continuing on the 'not entirely practical' route...
You can pick up 256MB PCI graphics cards for under £30 nowdays.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=290295456878
Given how expensive RAM is for some (non x86) systems, it could
almost be worth it to use them as fast swap... (I *said* it was
'not entirely practical' :)