27 Mar
2012
27 Mar
'12
12:46 p.m.
hello all,
yesterday my wife and I emptied our garage(25 years of diverse things=20
I hope most of it went abck i nthe garage (or in other suitable
accomodation). It sounds like you haev some intersting machiens.
stocked inside).I found again my hp1000,I saw a
vax8200,a a lot of things=
=20
that suddenly made me rich :-))etc...and I
found something I had totally forgotten ,bought a long time ago as a part=
of=20
lot bought at the near army base:a Tektronix microprocessor emulation=20
system,made of two (big!!!) racks a 8510 and a 8310.I opened them just to=
=20
see ,and immediately I saw the two purple dec handles in the 8510....
A lsi 11/2 was here.I brought the rack inside ,removed the dust and spide=
rs,
connected to the terminal line labeled 'auxilliary' a VT320 and powered i=
t=20
up,after a few tests,I found the correct speed (2400 bauds) and got the o=
dt,
using the run/halt switch of the front panel.
I has 32k of ram,the console is at correct place,but the fdc is not at=20
177170,so I doubt it can boot standart rt11.Unfortunately I found an erro=
r=20
in the memory:bit 9 of the first 16k bank is stucked to 1,it may be only =
a=20
ram chip (4116)to change,the 2nd bank is correct,a few test programs were=
=20
ok.
So if you see such a machine it can be useful.
I ahve 2 such systems, I forget the model numbers. The filestore unit of
one has 2 floppy drives and an 11/03 processor board. The filestore of
the other has one floppy drive, one (Micropolis 1200-series) winchester,
and an 11/23 CPU.
The former runs something claled TekDOS, which is possibly modified RT11.
The later runs TNIX which is essentially unix.
I'd like to find maintenance informations about
the Tektronix boards.
So would I... I am sure schematics, etc were avaiable at one point, but
I've never seen them. I would be possible to reverse-engineer it (after
all, you know the pinotus of the CPU board connector so you could fidn
the bus signals o nthe Tektronix boards...) but it would be a lot of
work. Maybe one day...
I'try to repair the mem board,and will continue to
play with it.
-tony