VCF East 2.0, Day one.

From: Bob Shannon <bshannon_at_tiac.net>
Date: Sun Jul 18 18:46:39 2004

Hi Tony,

Tony Duell wrote:

>>I'm pretty familiar with the VT-11 (GT-40) instruction set, and would be
>>able to write a port
>>of that code to run on a HP1350 vector box.
>>
>
>Ah, somebody else has one of those interesting units... I asusme you've
>looked inside. It's all random logic (lots of it) to decode a small
>subset of HPGL (in ASCII!) into binary numbers of the endpoints of the
>vectors, and then display them.
>
>I have a couple of them, and the official HP service manual...
>

I have two HP1350's, one working (again), and another in rough shape
I've designated as a spare
parts machine (although it is complete). I've written drivers and a few
demo programs for this
box using my home-grown threaded interpreter running on an HP 2113.

This setup was just at VCF East, but due to a flaky dip switch (chanded
the HPIB address!) it was
not running the demo's I'd planned.

I also have an HP 1351 that needs some power supply debugging when I
find the time.

>
>
>You do realise that the GT40 is a complete computer (there's a PDP11
>processor in there), while the HP1350 is just a display. Still you can
>hang the 1350 off just about any machine with an HPIB port I guess.
>
Oh yes, many years ago I had a DEC Graphic 11/40 as my 'personal
computer'. This was an
11/40 with a VT-11 and the floating point microcode, etc. A very nice
machine, I replaced the
original RK-05's with RL-01's and got many good years of service from it.

I always prefered the front panel of the 11/40 to the 11/34 I had after
running out of room for
the 11/40. I regret that 'upgrade' to this day.
Received on Sun Jul 18 2004 - 18:46:39 BST