MiniMig + PowerPC = OS4 Hardware for all

[RedskullDC]

rkauer wrote:
 Here comes a thought:
 So here come the idea: create a minimig with both 68k AND PPC CPUs! Exactly like those from A2000.

Interesting idea, would be easy to port Minimig to something like:

http://www.digilentinc.com/Products/Detail.cfm?Prod=FX12
or
http://www.xilinx.com/ml403

The Virtex4 FX chips have one (or more) embedded PPC blocks which could theoretically be employed to run OS4,
though my knowledge of the PPC is minimal.

I'm playing with porting Minimig to the ML403 (which I have on of here) at the moment using the 68k core from the Suska project (which still needs some work).
I'd be keen to try out Tobiflex's 68k core code as well if/when he releases it  :-)

red

[RedskullDC]

Crumb wrote:

The problem is that AFAIK there are no 3.3v versions of other 680x0 chips that aren't 68000, 68040 -there's a special version of 040- and 68060. So unless you include a more advanced cpu, a 5v slot interface would be definitely interesting for the first tests. You could connect a BlizzardPPC and check out if OS4/MOS work with MiniMig, later you could integrate a 020 or 060 +PPC for the minimig.

Has anyone here tried running some of the other 68k chips at 3.3v ?

Anyone with a Blizzard 040 game to try it with the CPU voltage set to 3.3v (060 postion), and see if it works reliably?
I don't have such a board, else I'd try it myself.

If so, 68040's can be bought very cheaply at:
http://cgi.ebay.com.au/Motorola-32-bit-Microprocessor-P-N-XC68LC040FE33B_W0QQitemZ160114591305
to experiment with.

Digi-key lists some of the HC series 68K chips as being 3.3V tolerant, though this is at odds with the Motorola docs.

Red