From:	Airhead Zoom <airhead_zoom AT hetnet DOT nl>
X-Priority:	Normal
To:	djgpp AT delorie DOT com
Subject:	Interrupt problems
X-Mailer:	Pronto Pro [ver 1.00 (0225)Trio]
Mime-Version:	1.0
Message-ID:	<0b9844705101129NET015S@hetnet.nl>
Date:	17 Feb 1999 11:05:47 +0100
Reply-To:	djgpp AT delorie DOT com

Hello,

I'm a newbie when it comes to DPMI programming. I've programmed in realmode 
(Turbo C) before.
Currently I'm programming the so-called PIT (Programmable Interval Timer) and 
this requires a certain interrupt vector to be set.

I know there's a function called __dpmi_set_protected_mode_interrupt_vector, 
located in DPMI.H.
This function accepts a vector and a __dpmi_paddr. (structure with offset32 and 
selector)
How can I request the offset32 and selector of a function?
And how can I call the old function that was in the vector before I overwrote 
it? I also know that I can request the __dpmi_paddr of THIS function, with 
__dpmi_get_protected_mode_interrupt_vector.

(I can't use the _go32_chain_protected_mode_interrupt_vector because I don't 
want to call the old function EVERY time the interrupt is called)

I'd appreciate a few replies, because I've posted a message before and got NO 
REPLIES @ ALL!

Greetz,

Airhead Zoom of Dancing Pumpkin Productions

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