20 Mar
2000
20 Mar
'00
9:11 a.m.
On Mar 20, 13:23, John Honniball wrote:
Only the oldest 2001-x PETs use those SRAMs. I guess it's time to build
that upgrade board (a PAL, a pair of EPROMS, and some 6264s, a 62256, or
some cast-off PC cache).
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
On Sun, 19 Mar 2000 21:28:09 GMT Pete Turnbull
<pete(a)dunnington.u-net.com>
wrote:
One of the
MCS6550 RAMs has gone west. Does anyone have a spare, or an
equivalent, for sale? It's a 22-pin 1024 x 4 200ns static RAM.
I'll have to check the RAMs in the spare PET that I
keep in the garage. Can't remember whether they're SRAMs
or DRAMs in the bigger PETs.