30 Jul
2004
30 Jul
'04
3:54 a.m.
Bruce wrote...
I have scanned and placed on the web an Internals
Guide for HP T.S.B. that
was written around 1969. It describes all of the core and disk structures
used in these early systems plus has hand-written flow charts (!) for each
command, the BASIC (semi-) compiler, runtime and decompiler. It is
available at:
I have a TSB internals manual for the 2000E version that I got about 5 years
ago. Al put it up on his site back then (it's still there). Al had located
the internals manual for 2000/Access quite some time ago too and put it up
on bitsavers as well. Both are much more complete than the document Bruce
has.
However, I just quickly thumbed through the IMS document Bruce has, and on
the surface I can't tell what version of TSB it is for. It appears to be
well before Access. It may be part of the 2000E IMS, but at first blush it
looks like something earlier.
Coincidentally, I had just printed off the 2000/Access IMS document last
night. It's a good 2.5 to 3 inches thick. Sometime in the not too distant
future I'm hoping to make some modifications to TSB, principally to ease the
hardware requirements to make it run on easier to find hardware. The most
likely first target will be to see what will be required to make 2000/Access
work with individual serial cards like the BACI or 12531, instead of the
hard to find 12920/21 mux set. Not completely sure that is possible, but
perhaps. I'm looking into it.
Most cool Bruce, thanks!
Jay West
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