From: "Jonathan Villani" <jonathan DOT villani AT videotron DOT ca>
Newsgroups: comp.os.msdos.djgpp
Subject: VESA 1.2 banked - How do I call a far pointer function in DJGPP?
Lines: 29
X-Newsreader: Microsoft Outlook Express 4.72.3007.0
X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3007.0
Message-ID: <dFwZ1.1786$iT1.2887@weber.videotron.net>
Date: Tue, 27 Oct 1998 22:58:51 -0500
NNTP-Posting-Host: 207.96.223.38
X-Complaints-To: abuse AT videotron DOT net
X-Trace: weber.videotron.net 909547209 207.96.223.38 (Tue, 27 Oct 1998 23:00:09 EDT)
NNTP-Posting-Date: Tue, 27 Oct 1998 23:00:09 EDT
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hello,

I am currently porting my graphic library from Borland C to DJGPP and I
would like to know how to call
a far pointer function in DJGPP. I've checked with others VESA packages but
all them seems to use
the interupt 0x10 for bank switching (slower than a simple call, in real
mode...protected mode not sure but I suppose it's also faster with a call. I
could be wrong on that?!).

My code (bank switching) worked fine in Borland C. (Intel Asm)

void far *bankptr;         /* Pointer to the banks switching function */

asm mov bx,write_win
asm mov dx,bank
asm call dword ptr bankptr

How do I code theses 4 lines in DJGPP?
Does DJGPP support that : call dword ptr bankptr part?

Thank you for any suggestions!

Jonathan Villani
jonathan DOT villani AT videotron DOT ca