24 Sep
1997
24 Sep
'97
4:17 a.m.
There are a
few IBM cards that I've never seen and would love to get. Top
of my list is a PGC (professional graphics controller) - a 2 board set
that contained an 8088-based graphics accellerator. It emulated a CGA card
(I think) but had extra modes as well. Another
thing I would like is a
Data Aquisition and Control adapter.
I acquired one of the PGA boards and I passed up an opportunity a couple of
years ago to get the IBM monitor that went with it. BTW, I am assuming here
that what you are referring to as PGC is the same thing I am referring to as
PGA. I see them occasionally and will keep you in mind the next time I find
one if you like. 
24 Sep
24 Sep
5:01 a.m.
On Wed, 24 Sep 1997 Philip.Belben(a)powertech.co.uk wrote:
AFAIK, PGA=PGC. IIRC, VGA pixel resolution by lots of colours.
When I was working for IBM, I installed a PGC for a customer; I helped
with demos involving PGC and DACA (Yes, another nice piece of kit) but I
never had a chance to acquire any of that stuff :-( :-( :-(
Does the PG(C/A) card have two 9-pin connectors on the back with little
white pins stuffed into some of the connector holes? Or is that some
other board?
Sam Alternate e-mail: dastar(a)siconic.com
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There are a few IBM cards that I've never seen and
would love to get. Top
of my list is a PGC (professional graphics controller) - a 2 board set
that contained an 8088-based graphics accellerator. It emulated a CGA card
(I think) but had extra modes as well. Another
thing I would like is a
Data Aquisition and Control adapter.
I acquired one of the PGA boards and I passed up an opportunity a couple of
years ago to get the IBM monitor that went with it. BTW, I am assuming here
that what you are referring to as PGC is the same thing I am referring to as
PGA. I see them occasionally and will keep you in mind the next time I find
one if you like. 
5:48 a.m.
On Wed, 24 Sep 1997, Sam Ismail wrote:
Does the PG(C/A) card have two 9-pin connectors on the
back with little
white pins stuffed into some of the connector holes? Or is that some
other board?
No. That one sounds like the special keyboard interface card for the
PC/3270. There is a special keyboard cable that connects to one of the
9-pin sockets and also to the 5 pin DIN socket on the system board. I
can't remember what the other socket is for (mouse?). That card should be
a single full-length card with an Intel microcontroller (8048 or 8051
series - I forget) on it.
The PGC is _2 boards_ I think (Philip: I don't recall a 3rd board being
mention in the manual). It plugs into 2 adjacent full-length slots on the
system board. It contains an 8088, some RAM, video chips, and TTL glue. It
has a special double-width fixing bracket at the back.
There is one DE-9 (9-pin D) connector on the back.
Sam Alternate
e-mail: dastar(a)siconic.com
-tony
5:59 a.m.
On Wed, 24 Sep 1997, Tony Duell wrote:
No. That one sounds like the special keyboard
interface card for the
PC/3270. There is a special keyboard cable that connects to one of the
9-pin sockets and also to the 5 pin DIN socket on the system board. I
can't remember what the other socket is for (mouse?). That card should be
a single full-length card with an Intel microcontroller (8048 or 8051
series - I forget) on it.
I have a IBM PC/3270 and it has a three board set inside with all the
boards connected together. The board I described in my previous message
was in a system in a thrift store and I couldn't open it up to look inside
unfortunately. But it wasn't a 3270 PC because that model had a specific
model number (can't remember the number right now).
Sam Alternate e-mail: dastar(a)siconic.com
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Attend the First Annual Vintage Computer Festival
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7:43 a.m.
Sam Ismail wrote:
On Wed, 24 Sep 1997 Philip.Belben(a)powertech.co.uk
wrote:
The PGC board I have has one DB9 video output jack and contains three
boards; two full size boards with a smaller (memory?) board sandwiched
between the two on the end away from the video jack. The outside board on
the end away from the video jack also has two 50 pin connectors at the top
and bottom that I would guess is for adding additional memory.
> > There are a few IBM cards that I've
never seen and would love to
get. Top
> > of my list is a PGC (professional
graphics controller) - a 2 board
set
> > that contained an 8088-based graphics
accellerator. It emulated a
CGA card
Does the PG(C/A) card have two 9-pin connectors on the back with little
white pins stuffed into some of the connector holes? Or is that some
other board?
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4 comments
4 participants
participants (4)
-
ard＠odin.phy.bris.ac.uk -
dastar＠crl.com -
marvin＠rain.org -
Philip.Belben＠powertech.co.uk