On 27 Jan 2007 at 21:46, Tony Duell wrote:
Sounds like a video RAM failure. specifically the
low nybble of the
second half of the RAM..
Tony, I'm sure you've got a good reason for saying what you did, but
why wouldn't one look at the *high* nibble? i.e. space=hex 20,
inverse "p"=hex f0.
Yes, you're right. It's getting late, and for some reason I thought 'P'
was 4F
So change the high nybble RAM, which IIRC is U409
-tony