Saved Altair 4K BASIC

From: Allison J Parent <allisonp_at_world.std.com>
Date: Wed Nov 11 07:40:59 1998

< At the time, MITS had an absolutely miserable 4K dynamic memory board.
< This was one of the few ways that they could entice folks to buy it.

The 88MCD was poor, the S4K slightly better and neither would work with
z80s without being severely hacked! I had three of each and they were
all junk. Why three of each... at one point S4Ks were offered less rams
to anyone that had 88MCDs at a ok price. I was able to make them
acceptably reliable by pulling the Drams and putting in compatable
static parts (NEC uPD410). The board layout still stank and the
general noise level on the bus didn't help. Up grading the bus to
a WAMCO or compupro with terminations helped. Replacing the whole
machine with a NS* Horizon was a vast step forward.

Allison
Received on Wed Nov 11 1998 - 07:40:59 GMT