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Date: Wed, 21 May 1997 07:40:16 -0600
To: Michael Smith <msmith@atrad.adelaide.edu.au>
From: Brett Glass <brett@lariat.org>
Subject: Re: isa bus and boca multiport boards
Cc: rberndt@nething.com, WELCHDW@wofford.edu, HARDWARE@FreeBSD.ORG
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At 01:34 PM 5/21/97 +0930, Michael Smith wrote:
 
>(cocks an ear listening for the ICBM leaving bde's desk).
>
>I don't think that would be a very popular idea; the sio driver should be
>more, not less, machine independant.

It's already hopelessly machine-dependent, due to the nature of the quirky
UARTs and edge-triggered interrupts. I don't think there's much value in
trying to maintain machine independence in the inner loops, where the C
code is slowing things down. But even with C, many optimizations would be
possible, as described in my message.

I've noticed a significant slowdown with the latest drivers, and would
really like the speed back!

--Brett