Date: Wed, 21 May 1997 07:40:16 -0600 From: Brett Glass <brett@lariat.org> To: Michael Smith <msmith@atrad.adelaide.edu.au> Cc: rberndt@nething.com, WELCHDW@wofford.edu, HARDWARE@FreeBSD.ORG Subject: Re: isa bus and boca multiport boards Message-ID: <3.0.1.32.19970521074016.00736a68@lariat.org> In-Reply-To: <199705210404.NAA08585@genesis.atrad.adelaide.edu.au> References: <3.0.1.32.19970520125159.006dbe70@lariat.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
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