From: Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Automatic EOI in DJGPP
Date: 19 Oct 2000 12:22:01 GMT
Organization: Aachen University of Technology (RWTH)
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TeddyLam <teddylam AT geocities DOT com> wrote:

> is only one interrupt exist during the test process, I want to improve the
> performance by configuring the 8259 PIC to enable the Automatic EOI mode
> such that I dont need to issue EOI everytime my ISR is being called. 

I strongly doubt this can be done at all, from a user-level program.
Your program may not particularly need the other interrupts, sure, but
what about the rest of the operating system? Do you *really* want to
shut off all HD, Floppy and other hardware IRQ services? For the whole
system?

I.e., I suspect the whole idea to be a bad one.
-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.