24 Sep
1999
24 Sep
'99
2:33 a.m.
I sometimes see the monitors. They're VERY obvious. They are large with an
oversize square-ish case and a built in swivel stand. I'm not looking at
the monitor right now, so I forget what the plate says on it. But it also
has a big red toggle switch. You can see them from miles away.
Again, I believe there are other adapter plugs on the board, so other
monitors would work...
I've been running CPM-86 as well as other weird stuff on it. It's real IBM
so that early software runs well and correctly on the 3270...
-mike
-----Original Message-----
From: David Williams <dlw(a)trailingedge.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Friday, September 24, 1999 8:21 AM
Subject: Re: IBM 3270 PC
So what people are telling me is this is basically just an XT to me
unless I have something that uses 3270 terminals to hook it up to.
Then I can use it as a terminal. That is if I can get the special
keyboard and monitor. Is that right? Well I did just give a bunch of
furniture in my storeroom to my brother which freed up some
space. I guess I could hold on to it for a while just in case
something turned up. Hmmmm.
On 23 Sep 99, at 22:05, Jay Jaeger wrote:
The part quoted below about the display was incorrect.
A true 3270 PC
used a special display adapter as well as a special keyboard adapter and
some special expansion memory (cabled to the keyboard adapter, if I recall
correctly). However, you can pull all of that out, and you will have a
more or less standard XT. You can leave the coax card in, if it suits
your fancy, and you have a 327x controller around somewhere... 8-)
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
24 Sep
24 Sep
2:48 a.m.
I think I've seen the monitors before too. I may have seen the
keyboard once long ago. But I already have an IBM PC which I
use to play around with CP/M-86 so wasn't sure if I wanted to keep
this. Of course the PC is a PC and not an XT. It doesn't have the
hard drive on it so maybe I'll use this one as a CP/M-86 machine
now.
On 24 Sep 99, at 8:33, Mike Allison wrote:
I sometimes see the monitors. They're VERY
obvious. They are large with
an oversize square-ish case and a built in swivel stand. I'm not looking
at the monitor right now, so I forget what the plate says on it. But it
also has a big red toggle switch. You can see them from miles away.
Again, I believe there are other adapter plugs on the board, so other
monitors would work...
I've been running CPM-86 as well as other weird stuff on it. It's real
IBM so that early software runs well and correctly on the 3270...
-mike
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
12:10 p.m.
There is another issue. IBM had two graphics cards for these beasts. One
was a Programmed Symbols Adapter. The other was an All Points Addressable
adapter.
If he has the latter, AND the monitor, then most things will be compatible
with CGA graphics. If he has the former (the PSA), then he has no PC
compatible graphics mode, IIRC.
Jay
At 08:33 AM 9/24/99 -0600, you wrote:
I sometimes see the monitors. They're VERY
obvious. They are large with an
oversize square-ish case and a built in swivel stand. I'm not looking at
the monitor right now, so I forget what the plate says on it. But it also
has a big red toggle switch. You can see them from miles away.
Again, I believe there are other adapter plugs on the board, so other
monitors would work...
I've been running CPM-86 as well as other weird stuff on it. It's real IBM
so that early software runs well and correctly on the 3270...
-mike
-----Original Message-----
From: David Williams <dlw(a)trailingedge.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Friday, September 24, 1999 8:21 AM
Subject: Re: IBM 3270 PC
So what people are telling me is this is basically just an XT to me
unless I have something that uses 3270 terminals to hook it up to.
Then I can use it as a terminal. That is if I can get the special
keyboard and monitor. Is that right? Well I did just give a bunch of
furniture in my storeroom to my brother which freed up some
space. I guess I could hold on to it for a while just in case
something turned up. Hmmmm.
On 23 Sep 99, at 22:05, Jay Jaeger wrote:
---
Jay R. Jaeger The Computer Collection
Jay.Jaeger(a)msn.fullfeed.com visit http://www.msn.fullfeed.com/~cube
The part quoted below about the display was
incorrect. A true 3270 PC
used a special display adapter as well as a special keyboard adapter and
some special expansion memory (cabled to the keyboard adapter, if I recall
correctly). However, you can pull all of that out, and you will have a
more or less standard XT. You can leave the coax card in, if it suits
your fancy, and you have a 327x controller around somewhere... 8-)
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
12:30 p.m.
How can I id which card it is?
On 24 Sep 99, at 19:10, Jay Jaeger wrote:
There is another issue. IBM had two graphics cards
for these beasts. One
was a Programmed Symbols Adapter. The other was an All Points Addressable
adapter.
If he has the latter, AND the monitor, then most things will be compatible
with CGA graphics. If he has the former (the PSA), then he has no PC
compatible graphics mode, IIRC.
Jay
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
3 Oct
3 Oct
2:58 a.m.
First off, if you don't have a little connector at the TOP of the display
card (it is a FULL LENGTH) card, then you have neither one (or you are
missing some connectors... ;-) ).
If you have ONE little connector at the top, bridging the cards, then you
have the All Points Addressable adapter. It is part number 8654390,
according to the info I have.
If you have TWO little connectors at the top, bridging the cards, then you
have the Programmed Symbols adapter. It is part number 8654381, according
to the info I have. The PS adapter was designed for use in emulating the
original 3270 graphcis displays, which were not all points addressable, but
instead used dynamically downloaded character sets. (Yes it is possible to
do bit image graphics this way -- up to a point. It is butt-ugly to program).
Of course, if you had a diagnostics diskette for the beast, that would also
tell you what you have. Un
Jay
At 07:30 PM 9/24/99 -0500, you wrote:
How can I id which card it is?
On 24 Sep 99, at 19:10, Jay Jaeger wrote:
---
Jay R. Jaeger The Computer Collection
Jay.Jaeger(a)msn.fullfeed.com visit http://www.msn.fullfeed.com/~cube
There is another issue. IBM had two graphics
cards for these beasts. One
was a Programmed Symbols Adapter. The other was an All Points Addressable
adapter.
If he has the latter, AND the monitor, then most things will be compatible
with CGA graphics. If he has the former (the PSA), then he has no PC
compatible graphics mode, IIRC.
Jay
-----
David Williams - Computer Packrat
dlw(a)trailingedge.com
http://www.trailingedge.com
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