Seeking Xceed Color30 card
trag at io.com
Sat Apr 12 16:57:12 CDT 2008
>Date: Fri, 11 Apr 2008 21:11:07 +0100
>From: "Liam Proven" <lproven at gmail.com>
>> I'm trying to find a Micron Xceed Color30 card and Greyscale30 card for a
>> Mac SE/30.
>It /is/ possible to clone one - q.v.
Actually, that project was just to clone the Grayscale adapter card.
It did not include the frame buffer main card. The main card was
based on a custom chip by Micron--not an FPGA unfortunately. So the
chances of cloning it without having to redesign the bulk of the
logic is nill.
Now, it really shouldn't be that hard to whip something up with an
FPGA and either some fastish SRAM or an open core DDR2 controller and
one DDR2 memory chip. However, figuring out all the ins and outs
of properly interfacing to the Mac OS of the time has had me slowed
and stopped for a while. It's probably not all that difficult, but
it is tedious and there is a lot of information to sort through. One
of the hardest parts is knowing which information I actually need.
For every useful tidbit I find, I've gone through 20 chunks of old
Mac knowledge which don't apply but were in the way.
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