Date:	Sat, 28 Dec 1996 02:14:36 +0100
Message-Id:	<199612280114.CAA04398@tyr.diku.dk>
From:	Morten Welinder <terra AT diku DOT dk>
To:	billc AT blackmagic DOT tait DOT co DOT nz
CC:	djgpp-workers AT delorie DOT com
In-reply-to:	<32C50DE0.2D19@blackmagic.tait.co.nz> (message from Bill Currie
	on Sat, 28 Dec 1996 12:09:04 +0000)
Subject:	Re: Debuggers and mouse hooking (or maybe dpmi memory allocation).

> a couple of calls to dos via int 21 (rather that dpmi int, general 
> registers only)

Direct int 21 calls are semi-problematic because it is difficult
to ensure safe stack practices that way.  If I remember things
right then the introduction of __dpmi_int meant an increase in
reliability by overkilling the stack size.

So unless you really need to, don't use int 21 directly.

Morten

- Raw text -