CGA Modes (Wuz: Win 3.0)

From: Mike Allison <mallison_at_konnections.com>
Date: Wed Feb 4 18:36:55 1998

Assuming that all this is right (and I have no way of knowing as I'm
using the 3270pc), I bet you could find VGA, EGA or CGA cards which
could run a 3270 mode or a 5272 mode if told. It's a question of
knowing what to ask and the software or firmware knowing. Someone had
to be dumb enough to include it.

Otherwise, what do you want for the 5272 $$?

-Mike

Lawrence Walker wrote:
>
> On 3 Feb 98 at 17:22, Philip.Belben_at_powertech.co.uk wrote:
>
> snip
> >
> > > I'm sure my 3270pc handles a "better" quality CGA. It just looks like
> > > EGA, thought it was... It was running a version of Norton Utes and it
> > > was just beautiful turquoise blue set and clear characters.
> > >
> > > I'd have to think this was better than CGA, especially since it took two
> > > coupled long cards to run the video...
> > >
> > > -Mike
> >
> > No, it isn't PGA. (Although most of the chips on the cards are likely
> > to be PGAs, in IBM custom metal cans, as I recall...)
> >
> > The IBM 5272, the 3270PC display, was a very nice monitor. I don't know
> > the pixel resolution, but I'd guess at 800 x 400. Unfortunately, AFAIK,
> > it only did 8 colours.
> >
> > The 3270PC display card did TEXT MODES ONLY - it was aimed at emulating
> > the 3279 terminal. You could buy two add-on cards for it that went in
> > the slots either side in the motherboard.
> >
> > 1. The PS card. This provided emulation of the Programmed Symbols
> > option on the 3279. Very nice graphics, but only as a terminal, not as
> > a PC (although presumably you could have written PC drivers for it...)
> >
> > 2. The APA card. This provided support of the All Points Addressable
> > modes of the CGA. These CGA modes were displayed in the top lefthand
> > corner of the screen. And the only 8 colours reduced the capability
> > somewhat as well.
> >
> > It looked very good, but AFAIK IBM never supported it properly. Pity.
> >
> snip
>
> > But your description of the 3270PC sounds like you've got only one of PS
> > and APA, alas.
> >
> > Hope this helps
> >
> > Philip.
> >
> I've had a 5272 -23 monitor stashed for some time. Was never able to
> get it working on an XT trying various standard cards and drivers,
> altho it did display jumbled-up color lines so I figured it must be
> the driver. IBM wouldn't/couldn't offer me any help.
> From the above, it appears that I would need a 3270pc display card
> and one of two add-on cards. If I was fortunate enough to find these
> would it work on an XT ?
>
> Also I pulled an IBM DM12n501 monitor out of a dumpster. No
> power cord , just a 15 pin female connector . I surmise it's some
> sort of dumb terminal. So before I dump it any idea on what it is ?
>
> ciao larry
> lwalkerN0spaM_at_interlog.com
Received on Wed Feb 04 1998 - 18:36:55 GMT