[rescue] [OT] S: IBM /370 or /390 card

[Dave McGuire]

On 9/12/23 16:25, Mouse via rescue wrote:
>>> Wasn't the XT/370 primarily made with 68000s with custom microcode?
>>> [...] I'd love to see someone work out how to redo that on a newly
>>> made board.
>> Since the 68K's control store is in mask ROM on the chip, I think
>> that would be a challenge.
> 
> I can't imagine that there would be any difficulty beyond possible lack
> of documentation in reimplementing a 68k with writable microcode in a
> modern FPGA.

   How I interpreted Josh's question was the modification of a 68K's 
microcode.

              -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA