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From: ljz@well.UUCP (Lloyd Zusman)
Newsgroups: net.micro.pc
Subject: Re: 8259 PIC
Message-ID: <1041@well.UUCP>
Date: Wed, 7-May-86 19:29:47 EDT
Article-I.D.: well.1041
Posted: Wed May  7 19:29:47 1986
Date-Received: Sat, 10-May-86 14:08:15 EDT
References: <84@uscvax.UUCP> <10200010@ti-csl>
Reply-To: ljz@well.UUCP (Lloyd Zusman)
Organization: Whole Earth Lectronic Link, Sausalito CA
Lines: 17

In article <10200010@ti-csl> herman@ti-csl writes:
>
>> Is there anything else to know about port 20H? Can anyone direct me
>> (exact pointers please) to find a little detail about this and related 
>> subjects.

Also ...

A very good book for this kind of stuff is "8088 Assembler Language
Programming: The IBM PC" by David C. Willen and Jeffrey I. Krantz,
published by Howard W. Sams & Co., 1983. See pages 90-92 for a good
explanation of the 8259 and port 20h.

This is an excellent book for concise, usable explanations for many of
the internals for the PC.  It's old, though, and only covers the PC,
not XT's or AT's.  But much of the basic hardware configuration is
the same on these machines.  This book has helped me immeasurably.