From: Fabrice Frances <frances AT laas DOT fr>
Subject: Porting from v1 to v2
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Date: Tue, 21 Nov 1995 09:55:03 +0000 (WET)

Hi all, sorry to bother you with questions. I have used djgpp v1 for a while,
and would like now to gain DPMI compatibility. I have a C/assembly(mostly)
program with a lot of hardware accesses (keyboard, timer, vga, serial), it works
under Linux and go32/dos using nearly the same sources (just some #ifdef lurking
around). It fails under Windows, NT and OS/2... 8-(
With the help of djgpp v2, I have some hope it will work with every DPMI box.
I would apreciate any hint for part or all of the following points, thanks in
advance,

- easy : (shame on me) how do I call 387 emulation with v2 ? NT reports "Warning
Coprocessor not present and DPMI setup failed" and cwsdpmi reports "Exiting due
to signal SIGNOFP"

- go32 functions : I use some _go32_dpmi_... functions (allocating interrupts),
have they been renamed in v2 ?

- vga hardware : I use vga IO registers, and NT doesn't let me access them, is
there a way ? (same for IO addresses #40-#43 (timer), #60 (keyboard), #3F8-#3FF
and #2F8-#2FF (serial ports))

Cheers,

-- 
                          main(){int i,j,k,l,m,n,p;
char*s="@_DO AT AJQ@AQQ AT OQO@A_Q AT AQQ@AQO@@@@ONN_QDQAQDAAODAOEDAAIDQAQNN_@@@@";for(j=
0;j<16;j++)for(l=0;p=j%8,m=l-7+p,i=m/6,n=j*4+i,k=1<<m%6,l<32-p;l++)putchar(l<7-p
 ?' ':l==31-p?'\n':s[n]&k?(j==6||!(s[n+4]&k)?'_':' '):k/2&&s[n]&k/2?'/':' ');}