From: kunst AT prl DOT philips DOT nl
Subject: Re: Basic questions (graphics)
To: sarda_jea AT lsi DOT supelec DOT fr
Date: Wed, 1 Mar 1995 12:44:05 +0100 (MET)
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu (DJGPP users list)


> (i) What DPMI exactly means?

Dos Protected Mode Interface

> (ii) I tried to execute a grx test program (rgbtest.c) with my cirrus and with
> the environnement variable GO32=%DRIVER_PATH%cirrus54.grn but it still doesn't
> work (problem of driver). What did I forget?

Did you try: 'SET GO32=nc 256' as well ? (use the built-in VESA driver)

> (iii) How can I create a selector pointing on a part of the real memory ,for 
> example the 64Kb bloc of the vga frame buffer starting at 0xA0000 ? (assembly 
> language don't bother me)

Take a look at <sys/farptr.h>. It contains additional information.
Include <go32.h> as well for _go32_conventional_mem_selector().

Pieter Kunst (kunst AT prl DOT philips DOT nl).