386 upgrade boards for IBM 5160s

[Fred Cisin]

On Tue, 3 Nov 2009, Brian Lanning wrote:
> He said he used to run windows 3.1 on it, which makes me think he has more
> than CGA.

Windoze 3.10 can work with CGA (640 x 200); although not very well.
Hercules (720 x 348) is a better choice for 3.10.  Some trivial
experiments seem to hint that MICROS~1 may have been using ATI EGA at 800
x 600 for writing it.

BUT, 3.10 wants HIMEM.SYS, and will refuse to install unless there is some
"extended" (NOT "expanded") RAM above 1M.

OTOH, 3.00 is very happy with CGA on an XT, and can even run with less
than 640K.