Driver programs for PC6300 in high resolution mode

[Bill Mayhew]

Many programs seem to support the higher ( 640 * 400 ) resolution
modes of the PC6300 indigenous graphics controller.  In fact,
Version 2.01 and higher of Lotus' 1-2-3 program support several
graphics modalities for the board.  1-2-3 supports an 80 col by 50
row spreadsheet and the 640 * 400 two-color mode.

GEM desktop versions 2.0 and more recent support the AT&T display
in 640 * 400 two-color mode.

Microsoft Windows supports up to 640 * 400 resolution as well as
the DEB daughterboard for up to 16 colors.  Word also can use the
80 by 50 text mode.

Pizzaz screen grabbing program suppots the AT&T 640 * 400 two-color
mode (among others).

Inset supports the 640 * 400 two-color mode.

The Borland BGI device independent driver supplied with Turbo C 1.5
and Turbo Pascal 4.0 (and maybe some other stuff) also supports the
PC6300 hi-res modes, if you'd like to roll your own programs.


It seems that recent versions of most popular software support the
PC6300.  I looks like a good time to upgrade, if you're still using
version 1A of 1-2-3.  There are a lot of other nice features in the
newer versions of 1-2-3 too.

You can write a little assembly program with debug to call the
video interrupt to switch modes yourself, but most programs still
behave like they're running in a little screen.  I'm at home while
I am writing this, so I don't know off hand what the extended codes
for the video interrupt on the 6300 are.  If there is interest, I
can look them up and post them.

--Bill

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