Hi,
Today I bought what I thought were three 4MB 72-pin SIMMs. On closer
examination, they have *80* pins, and were made by Digital in 1991.
It says 5019144-01 A1P2 on the boards.
Some questions:
- what system would these have been used in?
- how much might they be worth?
- does anyone need any 4MB 80-pin SIMMs?
-- Mark
I am a radio collector. I know what you're saying. I have one of these
"Modern" radios - it's a Crosley Metro. While it would fool a non -
collector, since it looks like the original, a collector would know that the
tape deck doesn't belong there :)
What should be done, is that a "knobs and switches (and whatever else is
needed)" interface that hooks to the "modern" interface, with the chip in it
(or just put the chip in the other interface). While not being the
original, it'll still give the feel of the original. It'll use a LOT less
power, too :)
///--->>>
-Jason Willgruber
(roblwill(a)usaor.net)
ICQ#: 1730318
<http://members.tripod.com/general_1>
-----Original Message-----
From: Max Eskin <max82(a)surfree.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Saturday, May 29, 1999 1:48 PM
Subject: Re: ENIAC-on-a-Chip
>
>Maybe you don't see what I'm saying (and I don't know any reason for
>insults, either). Let's say you're a radio collector. You want a certain
>old radio, which you would never be able to own. Somebody gives you a
>modern radio with the same circuit layout but the old components have been
>replaced by modern ones. Such a radio could fit on a circuit board 2"
>sq. if done with surface mount. It works the same way. Would you take this
>radio, and say 'hell, if I want, I can add the old-fashioned knobs later'?
>I doubt it. Now, granted, this is the only kind of ENIAC anyone will ever
>be able to own, but I'm dubious about how similar the experience would be
>to running a real ENIAC.
>
> --Max Eskin (max82(a)surfree.com)
> http://scivault.hypermart.net: Ignorance is Impotence - Knowledge is
Power
>
>
Look what those wacky college students are up to now:
http://www.ee.upenn.edu/~jan/eniacproj.html
Sellam Alternate e-mail: dastar(a)siconic.com
------------------------------------------------------------------------------
Don't rub the lamp if you don't want the genie to come out.
Coming this October 2-3: Vintage Computer Festival 3.0!
See http://www.vintage.org/vcf for details!
[Last web site update: 04/03/99]
Sellam:
Comments like this are a bit condecending, lacking a kind
disposition to others. Your point is important but, you could
give it without so much venom.
William R. Buckley
If you're so indignant you can always build a "knobs and
>switches" interface to settle your neurosis.
>
>Sellam Alternate e-mail:
dastar(a)siconic.com
>---------------------------------------------------------------------------
---
On May 29, 16:28, Don Maslin wrote:
> Subject: Vintage S-100 cards
>
> I just acquired a number of vintage (circa 1977) S-100 cards. They are
> listed below:
>
> 3) Processor Technology 16k(?) RAM cards - one fully populated with
> NEC uPD414C chips, which I take to be a 2414 clone. The other
> two seem to have all of the glue chips, but no RAM. They are
> identified in silkscreen as ASSY NO.203000 and in etch as 16KRA.
uPD414 is the equivalent of a 4027 DRAM (4096 x 1bits). What's a 2414?
Did you mean 2114, or 2147?
> Anybody care? Anyone interested? Any offers?
Yes, but shipping to the UK would be too expensive :-)
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
At 10:37 PM 5/28/99 -0700, Sam wrote:
>
>Look what those wacky college students are up to now:
>
>http://www.ee.upenn.edu/~jan/eniacproj.html
>
It uses about 175,000 transistors! Wow, what an increase, just think of a
computer with 175,000 triodes, and compare that to an ENIAC (much less,
the power required). Or some years later, one with 175,000 discrete
transistors. Now that I remember, this was a thread some months ago... top
speed, etc.
-Dave
I have to admit, the 2414 is a strange number to me also. I looked up the
NEC DRAMs though, and the uPD414C would have been equivalent to a MOSTEK
MK4027. Remember, MOSTEK was the industry leader in DRAMs in the mid-'70's.
This number predates my NEC data, but uPD416C would have been the 16K
version.
Dick
-----Original Message-----
From: Pete Turnbull <pete(a)dunnington.u-net.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Saturday, May 29, 1999 7:27 PM
Subject: Re: Vintage S-100 cards
>On May 29, 16:28, Don Maslin wrote:
>> Subject: Vintage S-100 cards
>>
>> I just acquired a number of vintage (circa 1977) S-100 cards. They are
>> listed below:
>>
>> 3) Processor Technology 16k(?) RAM cards - one fully populated with
>> NEC uPD414C chips, which I take to be a 2414 clone. The other
>> two seem to have all of the glue chips, but no RAM. They are
>> identified in silkscreen as ASSY NO.203000 and in etch as 16KRA.
>
>uPD414 is the equivalent of a 4027 DRAM (4096 x 1bits). What's a 2414?
> Did you mean 2114, or 2147?
>
>> Anybody care? Anyone interested? Any offers?
>
>Yes, but shipping to the UK would be too expensive :-)
>
>--
>
>Pete Peter Turnbull
> Dept. of Computer Science
> University of York
A 2100S in good condition is a nice find. Is it just me or did the 2100/21MX
line of HP gear suddenly get popular with collectors in the past 6 months or
so? <grin>
You wrote...
>Some of these are pretty obvious about their functions,
>but does anybody have any idea what the "DUP REG" functions
>are?
There were two boards in the 2100/21MX line called DUP REG. They were the
8-bit duplex register PCA and the 16-bit duplex register PCA. They are
general purpose I/O interfaces. I know for sure that the 8-bit board was
used almost exclusively for paper tape readers or paper tape punches. I've
never seen the 16-bit board in use, so I'm not sure what it was used for.
>I'm speculating that the black section is the memory subsystem
>for the machine, and that the ID & DC boards have something
>to do with memory addressing, decoding, etc.
As I recall, you are correct in your speculation.
>That's all the info. I have right now. Doesn't look to
>me like there are any terminal I/O type interfaces in
>the box. I haven't had the nerve yet to power it up
>to see if it does anything. If any of ya'll have any info.
>about this machine, I'd appreciate a shout.
The 2100S gave you a choice of several different terminal interfaces. Most
common for general use was the 12531A, B, C, or D. Most common for
scientific use was the (IIRC) 12766 BACI. Also, the power supply in the
2100A/S was er.... not the best example of HP's usual over-engineering.
Check those voltages with dummy loads before you sacrifice some cards :)
I've got a fair amount of docs on the 2100A/S, but check out Jeff Moffat's
website, he has some decent manuals online.
Jay West
I just acquired a number of vintage (circa 1977) S-100 cards. They are
listed below:
3) Processor Technology 16k(?) RAM cards - one fully populated with
NEC uPD414C chips, which I take to be a 2414 clone. The other
two seem to have all of the glue chips, but no RAM. They are
identified in silkscreen as ASSY NO.203000 and in etch as 16KRA.
1) Polymorphic Systems 8k RAM card. It is fully populated with
2102 chips. It is a product of Interactive Products Corp.
1) Processor Technology Helios II Controller - presumably for an 8"
drive (two 50-pin headers). No LSI.
1) Processor Technology Formatter. Based on its 50-pin header and
the header's location, I infer that this card is part of a two
card set that is the Helios II listed above. Again, no LSI.
1) Percom Cassette/Terminal I/O card. Carries one each male and
female 10-pin connector. Also has an SMC COM2502 chip (40-pin).
There is a ~2x4" breadboard area on one end of the card.
Obviously, I have no way to know if these cards are functional.
However, they are clean and not beaten up.
Anybody care? Anyone interested? Any offers?
- don
