Anybody need this thing? It's for a VERY primitive programmer. I don't
think it even does EPROMs, it appears to only do Biploar PROMs. It has 2101
memory ICs but no microprocessor that I can find. It appears that
everything is done with a state machine using TTL logic.
Joe
Hi
Something like NRI?
Dwight
>From: ericmac at swissinfo.org
>
>I think it was about 15-20 years ago there was, I believe, a self-study course
>put out by some company for learning the hardware (and I think some aspects
>of software, i.e., DOS) of computing at that time. The course came with an
>8088 computer that, if I recall correctly, one built and "learned by doing."
>I'm pretty sure it was not a Heathkit. I have searched everywhere and have
>not come up with anything. Does this sound familiar to anyone? Any information
>would be helpful. I'm trying to track one of these courses/computers down.
>Thanks!
>
>Gary
>
>_______________________________________________________________________
>Your Site for Swiss Maps: http://www.swissinfo-geo.org/
>
>
>
>
>
> Does anyone have the O/S, Applications, and Diagnostice disks
I'm trying to find this as well.
Just picked up the manual set. It should be on bitsavers soon.
Kevin Schoedel said he had a copy as of Apr,2000
> On 2000/04/28 at 9:18pm -0500, Joe <rigdonj at intellistar.net>
wrote:
>> I picked up a second FLuke 1722 today. This one does have the
keyboard
>>(at last)! But I still haven't found the operating system
software for it.
>>Can anyone help? It uses Fluke's F-DOS. I'd also like to find a
manual
>>for it.
>
> I a Fluke 1720A with F-DOS. If there are grounds to believe that
the same
> software would work, I can try to do something about copying or
archiving
> the disks soon(er than I otherwise would). I might have multiple
copies
> already, though I seem to recall that only one was reliably
readable. I
> certainly do have multiple copies of the 1720A manuals.
Maybe this will be of interest to someone here:
http://newjersey.craigslist.org/sof/138336632.html
- Expert knowledge of VAX VMS operating system and VAX System administration.
and more....
Cheers,
Bryan
I am finally starting to clean up stuff ... again, and most of the stuff
is being listed on VCM, http://www.vintagecomputermarketplace.com/. If
you feel the prices are way too low, let me know :). And ditto if you
think they are too high.
Mostly, I am culling back my collection of most things after about 1984
or so. I would love to have the time to play with the S-100 systems, get
the Polymorphic and Lobo Drives stuff cataloged and working, etc. There
are probably some things that got lost in email from the VCM over the
past several months, so if I've forgotten or not responded to something
purchased there several months ago, please let me know. I tend to forget
to change some of the posts to "sold."
I have 2 to get rid of, with keyboard and external drive units. Pickup only
(or you arrange for packing and shipping), North (and I mean north, none of
that Newark/Edison stuff) New Jersey.
I'm looking for a Model I, an MC-10, a DT-100, a PT-210, Model 2000, and
just about everything else tandy related.
Make a swap offer.
Kelly
Wow Philippe,
looking at your website, I got an impressive insight on the work you did to get this PDP 8/L up and running again.
Keep on saving and repairing stuff!
Regards,
Pierre
"General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> schrieb am 05.03.06 12:53:14:
>
> Dear Tim,
>
> It is very hard to answer your question. I also spent hours fixing my
> pdp-8/L, in which almost all circuits had to be repaired. It took me two
> years. The only way : use a logic probe and have a set a spare flipchips
> which you know are OK. I created a system to test the flipchips using a
> digital acquisition card on a PC (see www.sonnet.be). Collect all possible
> schematics, study them, have a confortable seat, stay calm and systematic
> and use a card extender to have better access to all the lines.
> Good luck,
>
> Philippe
>
> ----- Original Message -----
> From: "Tim" <tradde at excite.com>
> To: <cctalk at classiccmp.org>
> Sent: Saturday, February 18, 2006 11:30 PM
> Subject: My pdp-8i problem
>
>
> >
> > I was hoping someone on this list might have some input on this. I have
> > also posted this to alt.sys.pdp8. I have a pdp-8i with a memory problem.
> > Here is the post from alt.sys.pdp8:
> >
> > Quite some time back while scoping out a problem I shorted a pin in my
> > 8i backplane and lost memory control. Since that time Vince and I have
> > been trying to figure out where the problem is to fix it. I don't know
> > what pin I shorted as at the time I did not realize
> > I had damaged anything. The +5v breaker tripped though.
> >
> > The problem is I can not deposit or read back any memory locations.
> > The MB is displayed correctly on a deposit. Scoping signal has shown me a
> > very odd signal on B FIELD 0 (1) when the machine is in run mode. It has
> > a wave form on it rather than just a normal
> > voltage. The oddest thing is the high point of the wave goes up to +6v
> > with a bit of the beginning of the top portion going above +6v. To me
> > this should not be. How can I get
> > +6v from a system that is using +5v as it's input voltage? We have
> > some theories but nothing concrete as yet. The other thing is if I remove
> > all 3 G228s (A36, B36, B37) the
> > signal goes away. I do not have parity memory so nothing is in A37.
> >
> > We believe there is a bad ground somewhere, but I have not been able to
> > determine where. I do not have a wiring list so I may have to trace some
> > signals manually. I think I have to find all the places the B30L1 (B FIELD
> > 0(1)) goes to.
> >
> > Any ideas or suggestions from anyone? This has been bugging me for a
> > long time. I look at it for awhile, and then put it down for awhile. It's
> > also not easy to look at this in the location it is in. It's too low to
> > kneel and really be comfortable. Too high to lay on my stomach. :)
> >
> > Thanks for any input on this. I should say that part of the system
> > still works. Examining or depositing memory while it does not appear to
> > load/store the data increments the PC
> > as it should. I can sort of run, which was my original problem. It
> > runs but stays at location zero. It is not an interrupt causing this. So
> > the front panel is mostly operational
> > so at least some of the machine is still working. I just have to find
> > the problem with the memory.
> >
> > I know most people on this list do not have a pdp-8i, nor may know
> > much if anything about them. Any suggestion will be taken and looked
> > into if it seems to have hope of leading to a solution. Also I will
> > answer any questions people have to help describe the problem more or
> > give more details into what Vince and I have looked at.
> >
> > Tim Radde
> >
> > _______________________________________________
> > Join Excite! - http://www.excite.com
> > The most personalized portal on the Web!
> >
> >
> >
>
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