Date: Fri, 29 Apr 94 10:31:09 EDT
From: peprbv AT cfa0 DOT harvard DOT edu (Bob Babcock)
To: rueve AT uni-muenster DOT de
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: problem callinf DOS interrupts that use ES
Reply-To: babcock AT cfa DOT harvard DOT edu

> To call some software-interrupt (one of the int 0x33 services to be exact)
> I need to pass a segment-register to tell it where it can find some data 
> (the mouse-pointer).
> 
> Doing this via int86x (the one you can pass the segment-registers along with)
> does not yield the wanted results but a system crash !

To do this you will probably need to use _go32_dpmi_simulate_int().  If you
are passing data to DOS or BIOS, it must be in the first megabyte of memory.
Use _go32_dpmi_allocate_dos_memory() to get some DOS memory and use
dosmemput() to copy your data into this memory.