Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 (Tek) 9/26/83; site tekig1.UUCP 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