Date: Tue, 30 May 1995 20:29:39 -0500 (CDT)
From: Chih-Hao Tsai <hao AT huey DOT vp DOT uiuc DOT edu>
To: Dave Gantose <gantose AT lerc DOT nasa DOT gov>
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: Manually calling iret functions

On Tue, 30 May 1995, Dave Gantose wrote:
> I realize that the p-mode handler was installed with
> _go32_dpmi_chain_protected_mode_interrupt_vector() and so the old p-mode
> handler will be called every time, but there isn't any old p-mode timer
> interrupt handler, is there? So wouldn't the clock fail to get updated?

The following description is from the djgpp on-line manual. Hope this can
answer your question. 

"This [_go32_dpmi_chain_protected_mode_interrupt_vector] function is used
to chain a protected mode interrupt. It will build a suitable wrapper taht
will call your function and then jump to the next handler. Your function
need not perform any special handling." 

Hao
--
Chih-Hao Tsai (c-tsai4 AT uiuc DOT edu)
Beckman Institute for Advanced Science and Technology
University of Illinois at Urbana-Champaign