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Path: utzoo!linus!decvax!ucbvax!ucbcad!tektronix!tekig1!dont
From: dont@tekig1.UUCP
Newsgroups: net.micro
Subject: Smart FDC Wanted
Message-ID: <1548@tekig1.UUCP>
Date: Sun, 26-Feb-84 02:01:58 EST
Article-I.D.: tekig1.1548
Posted: Sun Feb 26 02:01:58 1984
Date-Received: Sat, 25-Feb-84 03:45:43 EST
Organization: Tektronix, Beaverton OR
Lines: 11

With the advent of track buffering, we get a big improvement in performance, we
no longer need wait half a revolution for each sector.  But, we wait half a
revolution for the track, when there is good material going by all that time.
The floppy disk controllers ICs are smart enough to do multisector reads, with-
out processor intervention, but all I have seen demand the starting sector be
identified, and matched before the transfer begin.  Have I missed a controller
that can start transfers on the next available sector, or has someone found a
way to fool a controller into doing this sort of thing?  I'm hoping to find one
that can take advantage of DMA control, double density, 8" disks, and buffering.
Many thanks in advance.
Don Taylor