[GreenKeys] pdp 4 w/tty console ascii ? bcd? baudot? what say you Q

[Christian Gauger-Cosgrove]

On 21 July 2014 02:46,  <COURYHOUSE at aol.com> wrote:
> Christian  - that   would  be  fun!
>
While also being educational.

As to actually attaching a SIMH simulator to real serial port, it
works on both the CONSOLE TTY, as well as terminal multiplexers and
line units.

For example, to connect the console terminal of the PDP-11 simulator
to a real Model 33 of some sort:
set console SERIAL=ser0;110-7m2
Where ser0 is the name SIMH assigns to the first serial port it finds.
You could also use the actual port name as well. In any case, to see
which serial devices SIMH can actually use, enter the "SHOW SERIAL"
command.

Using the terminal interfaces other than the console require using
specific set commands for the devices, eludicated in each devices
particular help screen. E.g. attaching a real VT-100 to line 6 of the
VH type mux would be:
attach VH Line=6,Connect=ser0;9600-8n1



> I also want to   use the simulated hp2000
> I ran focal on an 8m  when  I started  our  computer business (would drive
> test ttys and GE terminets  to test them    and  had a 8A  what   ran wps8
> and os8   but  my real  gung ho on  stuff  were the hp2000 and 3000..... so
> playing with    the hp-2000 simulator might be a bunch of fun.
>
There are copies of HP 2000/ACCESS out there. And SIMH can simulate
both single processor and dual processor HP 2000 systems. I have no
idea where the software is, so you might need to ask around.


PDP-8 software is very much easier to find. And it is easy to find
both the standalone paper tape FOCAL, as well as FOCAL under OS/8.
David Gesswein -- the man who interfaced one of his PDP-8/e systems to
the internet (so you can run the actual 8 over the intertubes) -- has
a copy of the diagnostics and games OS/8 disk pack, which has a lot of
the PDP-8 text games, including the original PDP-8 SPACWR (not
Spacewar!, but the Star Trek game).


I find myself more interested in PDP-11 software, if only because real
PDP-11 systems are easier, and cheaper, to find than a PDP-8 of some
type. Plus, there is a lot of PDP-11 software out there.


On 21 July 2014 01:54, Ed Sharpe <couryhouse at aol.com> wrote:
> We have 2 straight 8 (one table one rack ) one 8s one 8m. One pdp 11/20 one
> 11/03 dressed as heathkit and looking for some Dec logic trainers
>
I think the most valuable machine you have there is the 8/S. If only
because they were such a nadir in the PDP-8 family, they're the rarest
model (excluding the LINC-8 and PDP-12, which were half-PDP-8 and
half-LINC). Mostly because they would have been replaced post-haste
due to their incompatibility with almost all PDP-8 software save FOCAL
and specifically tailored asm. While also being the absolute slowest
PDP-8.


I currently don't really have a hardware PDP-11 at my disposal, mostly
because of a combination of Evil Bitch Woman (don't ask), and moving.
I happen to have a KDJ11-BF (PDP-11/83 CPU with the floating point
accelerator) and an H9275-A backplace (Q22/Q22 serpentine). I also
have access to my VT-103 which I have on display, but it has no mass
storage, and is "only" an 11/23, with 256KB. (I've been thinking of
getting a QBUS SCSI interface, and sticking a small and cheap drive
under the CRT, where in certain models of VT-103 a TU58 would go, but
CQD-220 cards are NOT cheap...)


Cheers,
Christian

-- 
Christian M. Gauger-Cosgrove
STCKON08DS0
Contact information available upon request.