24 Jun
2004
24 Jun
'04
2:56 p.m.
It's not in any of my PC ref guides, even ones old enough to include family
one types.
It's two full length 16bit ISA cards bolted together. There's a connection
betwen them. Two EPROMs and several big square chips. No standard FRU number
that I can see anywhere. One of the cards is labeled DISPLAY CONTROLLER.
One of the cards has a 25 pin female connector. The other board has a
connector I've never seen before. It's a D shaped shell which has 3 holes side by
side no more than .25 inch in diameter. In each hole, there's a small pin. What
in the world is this?
I can provide a pic if that will help.
24 Jun
24 Jun
3:27 p.m.
[...] a connector I've never seen before.
It's a D shaped shell
which has 3 holes side by side no more than .25 inch in diameter. In
each hole, there's a small pin. What in the world is this?
This sounds a lot like a 3W3, such as is used by (for example) the DEC
3000/300X Alpha machines.
I have such a machine. I scanned that end of the cable I use with it;
the result, converted to jpeg format, is at
ftp.rodents.montreal.qc.ca:/mouse/misc/3W3-scan.jpg for your perusal.
In passing, does anyone know a source for such cables? While removing
it from the machine, I discovered - the hard way - that the connector
stuck to the machine more strongly than it stuck to the (molded-on!)
shell on the end of the wire. I've pushed it back physically, but I
have little confidence it will actually resume working, so I am
probably going to be searching for a suitable cable.
/~\ The ASCII der Mouse
\ / Ribbon Campaign
X Against HTML mouse(a)rodents.montreal.qc.ca
/ \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
3:28 p.m.
SUPRDAVE(a)aol.com wrote:
It's not in any of my PC ref guides, even ones old
enough to include family
one types.
It's two full length 16bit ISA cards bolted together. There's a connection
betwen them. Two EPROMs and several big square chips. No standard FRU number
that I can see anywhere. One of the cards is labeled DISPLAY CONTROLLER.
One of the cards has a 25 pin female connector. The other board has a
connector I've never seen before. It's a D shaped shell which has 3 holes side by
side no more than .25 inch in diameter. In each hole, there's a small pin. What
in the world is this?
I can provide a pic if that will help.
Are you sure that is is not an MCA bus? This sounds like a video card for an
IBM RS6000 MCA machine (like a 320).
Martin
3:31 p.m.
--- SUPRDAVE(a)aol.com wrote:
It's not in any of my PC ref guides, even ones
old
enough to include family
one types.
It's two full length 16bit ISA cards bolted
together. There's a connection
betwen them. Two EPROMs and several big square
chips. No standard FRU number
that I can see anywhere. One of the cards is labeled
DISPLAY CONTROLLER.
One of the cards has a 25 pin female connector. The
other board has a
connector I've never seen before. It's a D shaped
shell which has 3 holes side by
side no more than .25 inch in diameter. In each
hole, there's a small pin. What
in the world is this?
If it is a display card this connector should provide
R, G, B signals with usually sync on Green. Look at
those old sun workstation display connectors for clue.
vax, 3900
I can provide a pic if that will help.
__________________________________
Do you Yahoo!?
Yahoo! Mail Address AutoComplete - You start. We finish.
http://promotions.yahoo.com/new_mail
4:01 p.m.
SUPRDAVE(a)aol.com declared on Thursday 24 June 2004 09:56 pm:
It's not in any of my PC ref guides, even ones old
enough to include
family one types.
It's two full length 16bit ISA cards bolted together. There's a
connection betwen them. Two EPROMs and several big square chips. No
standard FRU number that I can see anywhere. One of the cards is
labeled DISPLAY CONTROLLER. One of the cards has a 25 pin female
connector. The other board has a connector I've never seen before.
It's a D shaped shell which has 3 holes side by side no more than .25
inch in diameter. In each hole, there's a small pin. What in the world
is this?
I can provide a pic if that will help.
That's a 3W3 connector - three "co-ax" connectors in a DA15 shell (I
think), one each for red, blue and green/sync. If they're really ISA
cards, I would guess they might be PC/RT cards, as I think that used ISA
slots (but other people probably know better than I).
Pat
--
Purdue University ITAP/RCS --- http://www.itap.purdue.edu/rcs/
The Computer Refuge --- http://computer-refuge.org
25 Jun
25 Jun
1:01 p.m.
On Thu, 24 Jun 2004 SUPRDAVE(a)aol.com wrote:
It's not in any of my PC ref guides, even ones old
enough to include family
one types.
It's two full length 16bit ISA cards bolted together. There's a connection
betwen them. Two EPROMs and several big square chips. No standard FRU number
that I can see anywhere. One of the cards is labeled DISPLAY CONTROLLER.
One of the cards has a 25 pin female connector. The other board has a
connector I've never seen before. It's a D shaped shell which has 3 holes side by
side no more than .25 inch in diameter. In each hole, there's a small pin. What
in the world is this?
That's an IBM RT/PC 'Megapel' video adapter. It used the same wierd
connector as the early microchannel RS/6000 machines. For the time, it
was an extremely sophisticated piece of hardware.
Steve
7437
days inactive
7438
days old
5 comments
6 participants
participants (6)
-
martinm＠allwest.net -
mouse＠Rodents.Montreal.QC.CA -
pat＠computer-refuge.org -
shirsch＠adelphia.net -
SUPRDAVE＠aol.com -
vax3900＠yahoo.com