Seeking Xceed Color30 card

[Jeff Walther]

>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.
>
>http://home.earthlink.net/~gamba2/microngray.html

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.

Jeff Walther