>From: dwight <dkelvey at hotmail.com>
>If I were doing it.
>First you need to find out if it needs OC output.
>There are many flash parts in surface mount that can have the higher
speeds.
>Add some 74LVC245 to give bus drive needed, also surface mount.
>All on a little PC board. There would be a lot of wasted space in the flash
but what the heck.
>Put an edge connector on the board to deal with programming.
>All will fit in a smaller space than the original part.
>Dwight
That would be great engineering fun! But at less than $4 for the blanks,
using the old PROMs and the vintage programmer seems pretty straightforward,
vintage correct, and low risk solution. Miraculously, my best offer got
accepted on ebay, so semi-affordable vintage clunky Data I/O 29B Programmer
and plenty of blanks are being shipped to me :-). I count collecting vintage
tools for servicing your vintage machine as part of the fun too...
Marc
Anyone out there have a manual for the Emulex CS21/H (or possibly the /U variant)? This is a UNIBUS DH11 clone. (There are also /FA, /FB, /FC, and /FD variants which are DMF32 clones - and we have the manual for these but it's of no use for our CS21/H boards :)).
At the very least, if anyone has the dip switch settings for this, that would be an immense help.
Thanks,
Josh
Sr. Vintage Software Engineer
Living Computer Museum
www.livingcomputermuseum.org<http://www.livingcomputermuseum.org>
As something went wrong in posting this question, I try to repost it
here. please don't be offended by this.
-------------------------------------------------------------------------
Hi all.
is there a list of equivalents for DEC ic's?
I've made a mistake in attaching our BA-8 to the PDP8/f and plugged in
the ribbon cable connecting connector C and D the wrong way. some magic
smoke came loose and there are a few chips broken .
by comparing the signals on those connectors, I made a list of suspect
chips on which some pins got-15v or +15v...
The M8330 board got most of the blast, resulting in 4 burned chips, but
other boards could well be affected.
-----------------------------------------------------------------------
--
Met vriendelijke Groet,
Simon Claessen
drukknop.nl
for both serial ports I can configure a terminal session at my Wyse 370
ASCII terminal. But I don't have any idea how to switch between
sessions. Any idea or any hint where I can find a manual for this terminal?
for both serial ports I can configure a terminal session at my Wyse 370
ASCII terminal. But I don't have any idea how to switch between
sessions. Any idea or any hint where I can find a manual for this terminal?
Absolutely (assuming you count your engineering time as free), not to
mention it feels rewarding to use clever engineering tricks to solve a
problem instead of money. But I want to keep my machine original and vintage
if I reasonably can. My programmer ended up very reasonably priced, and it
is recognized as one of the better vintage programmers of that era. So it
fits perfectly in my collection of higher end, historically meaningful
engineering tools. Two birds with one stone, so it was a pretty easy
decision.
Marc
>Sean Caron <scaron at umich.edu>:
>The median listing price for them on eBay for a 29B with pack seems to be
around $3-400 which IMO is a little steep for a 30+ year >old PROM
programmer. Hopefully your best offer successfully accepted was much lower!
>I think the part cost on the PROMs pales in comparison. For the cost of the
29B, you could design a replacement for the original >PROM, have some boards
fabricated, stuff them and you'd still be ahead a few hundred bucks ...
>starts to make sense at those kind of prices, imo.
>Best,
>Sean
William Degan wrote:
Comparing the 160 and 160-A manuals with the 160 in the ebay auction
(252070822992)
Page 37 of the 160 manual from 1960 - smaller "160" marquee sign.
Page 3-1 of the 160-A marquee says "CONTROL DATA 160-A"
Ebay auction says "CONTROL DATA 160"
So, there were two variations of the 160 marquee/sign above the numeric
display.
----
Also, if a person is looking at the front of the computer, on the top left
side, there is a square cut-out / slot? in the original 160 table
(purpose?). This slot does not appear on the 160-A's table (from the 1963
programming manual), nor is it present on the Ebay auction.
I am thinking this was originally a "later" 160 that was probably serviced
well into the 160-A days.
--
Bill
vintagecomputer.net
Only a few 160s used the 3 small inserts in the marquee. There were used to make it easier for the NCR rebrand. The later solid sign became the CDC standard.
The cut out on the left was for the BPRE-11 punch. Only the early 160's and early 1604 machines had this. The punch table was spring loaded and could be raised up to the desk top to reload paper tape. Later on, the punch was mounted on a tray that slid out to the front.
Another change was the replacment of the original paper tape reader with the PED 350. PED (Peripheral Equipment Division) was a CDC created company. Their first product was the 350 reader. Later, they made the 60X series of tape units and the 405 card reader. This was all part of CDC's effort to move away from other companys' peripherals. The early CDC systems shipped with Ampex tape units, IBM card equipment.
The original paper tape reader was an inport from Ferranti in England. It was fascinating; used thyratrons as light sensors. I had one, but it disappeared in the last move. You can tell it from the 350 by the paper tape load arm. On the Ferranti, it is a steel rod. On the PED 350, it is a flattened V shaped plastic arm.
Another way to tell early 160s from later units is the side drops. On the early units, the top formica also went down the left and right side about 12 inches. This stopped mid-life. Old memoriy says at s/n 43 but after 55 years, that is not hard data.
The early 1604's also had this side drop of the desk top. You can see it in some early photographs. I did see one 161 typewriter stand with the side drop, but don't remember if it went into production.
NO 160s were ever converted to 160-As. Not one. There are physical differences in the logic chassis. More cards slots were needed. The extra 4K bank of memory takes up a lot card space. The front panel would have to be totally replaced. The 160-A requires a lot more cable ports for the Buffer channel and the external memory (169).
160-A manuals would be useless for a 160. The card types are the same and about half the commands are the same. But that is it.
By the way, bitsavers has an excellent description of the 160 in "System Programs For The 160 Computer". It includes a photograph showing the above differences. And pages 1 - 10 present good insight to Seymour Cray's thinking about his next machine, the 6600. It shows where the idea for the PPUs came from.
The obsolete 160s were in use for many years after their demise. Usually for testing peripherals, copying paper tapes, etc. I last worked on one in 1980, almost twenty years after it was built.
Billy Pettit
>Not sure what you mean by membrane keypad. My front panels certainly
>have real buttons, which makes a clicking noise and feeling when I press
>them. But maybe I'm confused and there is some membrane behind the keys
>or something?
>
>Johnny
That's my mistake. I've never actually seen or touched a DKC8-AA panel, just
pictures of them in the manual :)
Hoping to acquire one since I am trying to do other things with the 8/A than
keep debugging its hardware! (such as getting Dumprest working for RL02).
>The 74f parts may be too fast. Try adding damping resistors (10 to 30 ohms)
>in series with the outputs to slow things down or just switch to 74ls
>
>Joe
Thanks for the tip. That is what I was implying, not sure I said so
explicitly :)
But adding twelve resistors which may or may not fix the problem, and
hacking up my board is not an attractive thought... but neither is changing
three 20-pin unsocketed DIPs without proper desoldering equipment. Guess I
should have used sockets in a prototype!
Besides, the board really does need redoing with proper power and ground
plane management.
-Charles
..the Subject says all.. I'm looking for the Formater Utility
for an Emulx QD01 ..preferably for the PDP11/RT11.
The Manual
http://bitsavers.informatik.uni-stuttgart.de/pdf/emulex/QD0151001-C-QD01_Di…
lists the Part Numbers for the Software as PX995180x-0y where x is 1 or 2
and y is between 1-4, dependig of the distribution tapei media. A RX50 Floppy
with the PN VX9951804 should exist too..
Has someone images from that software handy?
Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
