Date: Thu, 18 May 1995 19:44:06 +0300
From: eliz AT is DOT elta DOT co DOT il (Eli Zaretskii)
To: nigel AT algor DOT co DOT uk
Subject: Re: RM functions with DJGPP
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu

> Is it true that a program using GO32 v2 (or any other "real" DPMI
> provider) runs totally in protected mode, using V86 mode to access
> DOS/BIOS functions, and that a real-mode handler is no longer
> absolutely required.

For _hardware_ interrupts you need only install a protected-mode
handler, because DPMI server _always_ reflects hardware interrupts
to protected-mode.  This thread, however, was started by asking
what if a program which intercepts the hardware interrupt cannot
tolerate the CPU cycles lost to mode-switch which the DPMI server
does when the interrupt happened in real mode.  Most programs
shouldn't qorry about this (especially if they run on a fast CPU).