Date: Wed, 21 May 1997 08:05:15 -0600 From: Brett Glass <brett@lariat.org> To: Bruce Evans <bde@zeta.org.au>, gurney_j@resnet.uoregon.edu Cc: HARDWARE@freebsd.org, rberndt@nething.com, WELCHDW@wofford.edu Subject: Re: isa bus and boca multiport boards Message-ID: <3.0.1.32.19970521080515.0075bc30@lariat.org> In-Reply-To: <199705210705.RAA10446@godzilla.zeta.org.au>
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At 05:05 PM 5/21/97 +1000, Bruce Evans wrote: >I try to avoid it, and enjoy making serial drivers written in C several >times more efficient than previous and competing versions written in >assembler :-). How about the best of both? By your own analysis, any approach that avoids extra ISA I/O operations is a big win. So is any solution that can drop a slew of pointer dereferences (even if the ratio is 1:16) and avoids polling ports extra times.... --Brett
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