<And even more true in the S-100 world. Anybody who bought a system made
<solely of parts from IMSAI or MITS and didn't use third-party memory or dis
<controllers/systems was a total fool and completely ignorant of
<the blossoming S-100 industry.
Big time! The early versions *under sn ~2000 or so* had at lest a couple of
pages of mods from MITS alone.
Of the mods that were common for the 8800:
*heavier PS
*better backplane, theirs was the worst.
*CPU clock mod to use the 8224 instead of ttl and oneshots.
*MANY mods to 88mcd or 88s4k memory to make them work with
some disk controllers.
IMSAIs being about 6months later had fewer basic problems and a lesser
need for mods just to work.
Most S100 systems prior to ~1980 needed mods to allow for variations
between bus interpretations. The altair being first needed the most mods
for the newest boards.
Allison
Received on Mon Dec 08 1997 - 12:05:49 GMT