7863[followup] Tarbell Controller / 8080 System / CP/M 2.2?
- Apr 24, 2008Herb (all),
Regarding my earlier email about 8080 and CP/M 2.2, I did review your web
pages on the subject.
I have either of these two versions of CP/M 2.2 on disk, not sure which yet:
14 16 00 00 06 97 9603\CPM.COM Tarbell CP/M 2.2
14 16 00 00 06 98 9605\CPM.COM Tarbell CP/M 2.2
I wonder if these are simply the 8080 and Z80 versions? At some point I
will use the directions on
Perhaps as a future project Herb or someone could produce a brief
explanatory paragraph detailing CP/M 2.2 and it's adoption on 8080
systems. In addition to CP/M-specific history, this information would help
shed light overall on the transition most people seemed to have made in the
late 70's from 8080 to Z80 systems. Most references to CP/M 2.x and higher
that I have found assume/default Z80 systems are running it.
Because my first serious computer experience is of the post IBM PC era, I
do not have first-hand context.
Side note - The Tarbell controller has *a lot* of jumper wires and can be
configured to work with almost any kind of disk drive of the 70's. First I
have to figure out which drive my particular controller has been
configured, find a working version of this drive, and give her a test. If
Kelly brings his controller card to TCF, I can compare with mine. I assume
his is jumpered to work with a LOBO twin 8" drive, which I believe (I have
to check to confirm) is a Sugart 850 clone.
One of the things that got me interested in this subject is the fact that
Kelly has an IMSAI with a Z80 processor, a Tarbell disk controller and a
LOBO 8" drive system.
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