Tektronix PDP-11 Signal Processing System BASIC 1980

Monty McGraw mmcgraw74 at gmail.com
Sat Sep 26 15:31:29 CDT 2020


If you haven't checked already, we have quite a few posts on Tektronix
4051,4052 and 4054 including repairs on vcfed.org in the "Other" forum.

I have recovered lots of old 4050 program tapes and posted them to my
github repository:

If your 4051 includes the RS-232 option in your ROM backpack, you can
download the programs from a PC serial program like Realterm to your 4051,
once you get your 4051 repaired.

I just repaired my 4054A, which stopped clearing the screen when I pressed
the PAGE key or ran the PAGE command.
I found that the problem was the one-shot IC on that circuit had died and
had to be replaced.

If your problem is on the display board - it is easy to access with the
cover removed.


On Sat, Sep 26, 2020 at 2:12 PM Randy Dawson via cctalk <
cctalk at classiccmp.org> wrote:

> Hi Al,
> Fantastic!
> Your work here has always been the best, and the Tektronix graphics
> documents, as a subject was on target.
> I have a Tek 4051, and, its gathering dust.  I need to fix a broken trace
> blanking, but this thing is hard to get into.  Its going to be lay it out
> on the bench for scope probing.
> Thanks Al, for the post,
> Randy
> ________________________________
> From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Al Kossow via
> cctalk <cctalk at classiccmp.org>
> Sent: Friday, September 25, 2020 2:05 PM
> To: General Discussion: On-Topic and Off-Topic Posts <
> cctalk at classiccmp.org>
> Subject: Tektronix PDP-11 Signal Processing System BASIC 1980
> Just recovered these RX01 diskettes today ca. 1980
> http://bitsavers.org/bits/Tektronix/SPS_BASIC
> manuals
> http://bitsavers.org/test_equipment/tektronix/wdi

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