On Sun, 2006-02-05 at 14:15 -0800, vrs wrote:
> From: "Brad Parker"
> > Turns out the RX02 emulator needs an M105 and M7821 single height UNIBUS
> > card to work.
> >
> > Anyone have an extra M105 and M7821?
I have a number of M105 and M7821 boards available. $15/ea (ie $30 for
the pair) + shipping. If anyone's interested.
--
TTFN - Guy
> I have one of these at home and am also looking for disk images -
> especially the terminal emulator program.
they'll be up for a day or two at http://www.bitsavers.org/HP4952A as
a dmk and raw images
That would certainly be a good approach, but also definitely not the easiest.
Writing the required code in "pseudo language", then code in 8085 assembler
and burn in EPROM is just one step, but you need some 50-60 I/O lines to
control the lights and read the switches. That's additional hardware ... but
I have not [yet] looked at the diagram of the 11/70 console. Perhaps you can
modify it slightly and add multiplexers to get the I/O line count down.
Also, but this depends a bit on the console you want to hang on the /44, you
cannot simply connect the (data) LEDs to that UNIBUS DATA lines, because
depending the knobs (on a /45 or /70) you must display something different.
OTOH, a good question would be "to what extend must the attached panel be
operational? Fully or partially?"
If you select the /35 (aka /40) or even easier the /20 or /10 console you can
safe yourself a lot of work. Or go one step further and add the /34 or /60
console on the /44. Not *that*, I would certainly *not* start on.
Indeed, not going to attempt any of this, not even in the far future!
But I would love to read the workz of others in this area!
- Henk.
________________________________
Van: cctalk-bounces at classiccmp.org namens Tony Duell
Verzonden: ma 13-02-2006 16:52
Aan: cctalk at classiccmp.org
Onderwerp: Re: sexy PDP-11/44 panel (was: Re: Original 11/74 front panel)
>
> Without thinking much about it, I'd say that mounting any
> real blinkenlight console on a 11/44 is *not* trivial!
> Of course, grabbing UNIBUS address- and data-lines and wiring
> that to the lights is trivial, but to get all panel functions
> (LOAD ADDR, DEP, EXAM, etc). working on an 11/44 is more work.
I wondered about wiring the panel to the 8085 console processor, and
re-writing that firmware to take commands from the panel switches, not
>from the serial port.
But it's not something I am likely to work on any time soon...
-tony
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I have created new disks. I was interpreting the DS/SS index hole
incorrectly on the first try. Still trying to create ImageDisk images also.
Doing these next, probably by Wednesday.
Kelly
Very true, Pierre.
It is a matter willingness to travel several hundreds of kilometers just
to get something, but in the first instance it's of course a matter of luck.
The years that the real old stuff was thrown out are gone. An 11/34 can be
found with some patience, but the machines with many lights and switches
are indeed becoming a "rare find".
Edward and I travelled from The Netherlands to Italy to get two (!) 11/70's
... already some four years ago! We did not pay $1000 for the machines, but
we both paid $400 for the truck rental. Almost the same, as in the end,
your wallet is just as empty :-(
- Henk.
________________________________
Van: cctalk-bounces at classiccmp.org namens Pierre Gebhardt
Verzonden: ma 13-02-2006 18:26
Aan: General Discussion: On-Topic and Off-Topic Posts
Onderwerp: Re: sexy PDP-11/44 panel (was: Re: Original 11/74 front panel)
> I guess there are more people on the list who have a boring
> PDP-11/44 with a dull panel, that would like to make the /44
> more sexy with an 'appropriate' panel. The "upgrade" is,
> of course, done in such a way that it can be undone ...
> I (we) do not have a /74 panel :-(
Well Henk, at least, you HAVE PDPs with a "lights and switches" console.
Please think of those (I'm part of them!) who are eager to get one. 11/24 or
11/73s are nice, but unfortunately not the same. Today, it's almost impossible
to get one...if you don't consider the possibility of buying one for a 1000$.
THAT'S definitely the case for students like me.
... 11/74s are really cool! Thanks for that nice picture, Tim.
Regards,
Pierre
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8765626540 Cromemco System Three Case Kinda Rough Pickup Only
8765634509 Ohio Scientific OSI C3 Cabinet Incomplete Pickup Only
8765637723 IBM System/23 Datamaster for Pickup Only
8765639131 IBM 5247 Hard Disk Unit for Pickup Only
If anyone goes out there and isn't interested in the Cromemco/OSI
stuff, I'd like to talk to them :-).
--
"The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ:
<http://www.xmission.com/~legalize/book/>
Pilgrimage: Utah's annual demoparty
<http://pilgrimage.scene.org>
The VT103 had a Q-bus backplane. The VT105 and VT125, and several
compatible, were all add ons. The VT101, 02, 31, and 32 were just different boards in
the same unit. There was also the PDT11/130, and a few others.
Paul