22 May
2006
22 May
'06
3:07 p.m.
I just received the first part of a shipment which
includes an IBM 5175 monitor. The PGA card and
possibly the AT box it resides in is on it's way. I
plugged the monitor into my Vermont Microsystems card
(essentially a PGA clone), and it worked like a charm.
Have yet to plug the monitor into a VGA card and
investigate that noise (the PGA card possibly has some
funky syncing scheme, like combined sync or
sync-on-green). But regardless, I'm desirous of docs
for these babies, technical or otherwise. Programming
infor-mation is of the utmost importance. Can anyone
help?
I am reluctant to post this, because last time I posted something similar
I got flamed, but anyway...
I have the official IBM Techref for the PGC card (I believe that was the
official name, it was the Professional Graphics Controller), and the
monitor. Complete with schemaitcs (which I can't post, not having a
scanner) and programming info. I can extract useful bits from the
programming docs if you like.
I assume you realise it does a hardware emulation of the CGA card (not
including the 100*160 mode?). And that the 'better' mode is not memory
mapped at all, rather you send commands to the card to draw lines,
circles, etc.
-tony