"Eric W. Biederman" wrote:

> It's not a dos issue it's a bios issue, or at least should be.
> And it should be fully supported in dosemu.  Though I seem
> to recall an oddity or two, mostly that in a telnet window
> we default to the terminal window size and not 80x25 as the
> initial mode.
> 
> Can you please give me a good description of how you are trying
> to run this program, and how you are trying to set this video mode.
> Without details I can't give much help.

Hi Eric, 

Your comments are encouraging to me. Here are the details on this
program and its video support.

Ashton-Tate's Framework IV dates from 1991. It ships with a set of
generic video drivers enabling all the ordinary text and graphical VGA
modes, plus a set of SVGA-mode drivers specific to various chip sets. 

By examining the drivers with a Framework video utility, I can see that
the differences among the drivers mainly involve the column/row values
for the character counts and the hex values in the AX and BX registers. 

For example, here are values for three typical drivers:

COL     ROW     AX      BX      Description
=======================================================
132     44      0033h   0000h   16-color 640x480 text mode
80      50      1112h   0000h   16-color 640x480 text mode
100     31      4F02h   0102h   16-color 800x600 graphics mode


All of these drivers work fine using a Mach 64 board (ATI Graphics
Expression) under OS/2 4.0. Only the first two work fine (same computer,
same ATI card) under xdos 1.0.1 (using MSDOS 6.2 and XFree86 3.3). 

It's the 132x44 text mode driver that doesn't work. Using it, the
program does indeed run, but the display "wraps" unevenly at 80 columns,
scrambling the screen.  

If DOSEmu really can support 132-column VGA text mode, that would be
awesome!

Tom 


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Tom Davey, Director, Web Team
Linuxcare, Inc.
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