Date: Mon, 21 Mar 94 15:05:48 -0500
From: dj AT ctron DOT com (DJ Delorie)
To: eliz AT is DOT elta DOT co DOT il
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: DJGPP 1.11 Graphics


>    - I must use ``nodpmi'' in the GO32 environment variable, otherwise
>      I get General Protection Fault when doing graphics.  This happens both
>      in the t05 test program in the tests directory and the grtask program
>      in the samples/grtask directory.  I use Quarterdeck's QEMM 7.03 and
>      QDPMI which came with it (1.02 if I'm correct).

Correct.  Graphics are not supported in DPMI mode.

>    - The built-in VGA driver behaves differently (and, as far as I could
>      understand from the program sources, incorrectly) than the vga.grd driver
>      in the drivers subdirectory.

The built-in driver is a special VESA driver (vesa.grn or vesa.vgr I
think)

>   Also, I couldn't find documentation of what is displayed by GO32 on the
> top line of the display.  Some of the info I guessed, but some of it is still
> a mystery (especially those quick-flickering items at the right corner...).

RP (real/protected)
name of app
address of last syscall/fault
page space used (red)
phys mem used
phys mem remaining
paging reason (text data bss malloc stack <=in >=out)