Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!PUCC.PRINCETON.EDU!MQUINN%UTCVM From: MQUINN%UTCVM@PUCC.PRINCETON.EDU Newsgroups: comp.sys.apple2 Subject: Re: WARESEARCH Message-ID: <9012081630.AA09330@apple.com> Date: 8 Dec 90 16:25:57 GMT References: Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 27 On Sat, 8 Dec 90 01:30:52 CST Tae Song said: >|I'm pretty sure you can set the interleave to just about anything (16:1??) >|How many sectors are on one track anyways? ZZ Copy 1.0 let you set the >|interleave anywhere from 1:1 to 9:1, but they probably took the weirder ones >|out since there isn't really a practical use for them (who wants to make >|disk access slower?) > >There are 10 block/sectors per track, 80 tracks per side, 160 tracks per disk. >10 * 160 = 1600 blocks. > >whitewolf@gnh-starport ProDOS takes advantage of the fact that the outer tracks of 3.5" disks are larger than the inner tracks, so the closer you get to the edge of the disk, the more blocks per track there are. I think there are about 3 or 4 different 'sections' on the disk. Each section has a different amount of blocks. I forgot which book that's in. It's one of these: Exploring the Apple IIGS Apple IIGS Technical Reference Exploring GS/OS ---------------------------------------- Michael J. Quinn University of Tennessee at Chattanooga BITNET-- mquinn@utcvm pro-line-- mquinn@pro-gsplus.cts.com