Re: Port 20h

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From: Stokes Kevin
Date: Wed, 28 Oct 1992 19:51

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>Question everyone.  We all know that:
>
>	mov	al,20h
>	out	20h,al
>
>tells the processor to process the other interrupts.
>
>What do other ALs do?  I'm interested in three in particular, when AL = 11h,
>12h, and 13h.

  You need to get the data sheet for the Intel 8259A interrupt controller.
Port 20h is connected directly to this chip, and that data sheet is the
only place where I've seen decent doc on what all the functions are.

                                                  -Kevin

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From: kds@phy.duke.edu (Stokes Kevin)
Newsgroups: alt.msdos.programmer
Subject: Re: Port 20h
Message-ID: <6443@news.duke.edu>
Date: 28 Oct 92 19:51:54 GMT
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