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Re: [PATCH] Import updates from i386's i8259.c

To: Sergei Shtylyov <>
Subject: Re: [PATCH] Import updates from i386's i8259.c
From: "Maciej W. Rozycki" <>
Date: Wed, 6 Dec 2006 15:43:12 +0000 (GMT)
Cc: Ingo Molnar <>,, Ralf Baechle <>,
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <> <> <> <> <> <> <>
On Wed, 6 Dec 2006, Sergei Shtylyov wrote:

>    I'd say they *only* looked consistent then. :-)

 Some user tools may rely on certain strings seen in /proc/interrupts 

>    As for the I/O APIC, I think i82903AA was "the reference design" for it...

 Nope, it was the i82489DX -- the original "discrete" coupled Local & I/O 
APIC using a five-wire inter-APIC bus and a protocol different from later 
implementations.  Then there were ones included in the i82379AB (SIO.A) 
and i82374EB/SB (ESC) chipset components.  They used a three-wire bus and 
a new protocol.  And only then came the i82093AA.


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