From: nikki AT gameboutique DOT co (nikki)
Newsgroups: comp.os.msdos.djgpp
Subject: real mode calls pmode
Date: 22 Feb 1997 14:05:50 GMT
Organization: GameBoutique Ltd.
Lines: 21
Message-ID: <5emufu$e7u@flex.uunet.pipex.com>
NNTP-Posting-Host: www.gameboutique.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

i have an interface driver for some hardware which sadly is written in old
16 bit real mode code. one of the things it requires is that it can call
part of my code which i'm writing now under djgpp. if i want it to be able to
call my function wibble() from within code how exactly should i do this?
currently, i'm locking all the memory in the same way i would have done for
interrupts, then i pass the entry point to my function as
SEG=(((unsigned int)wibble)>>4) & 0xffff;
OFF=wib & 0xf

but i get sigsegv problems everywhere :( it's not actually an interrupt that's
calling me so i can't use the same routines i used to do those with can i?
i can't seem to find anything in the faq that helps, the closest is all irq
based but i'm not hooking any irqs here at all :(

regards,
nik


-- 
Graham Tootell           
nikki AT gameboutique DOT com