Path: utzoo!utgpu!watmath!att!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!wuarchive!texbell!attctc!pollux!bjc From: bjc@pollux.UUCP (Betty J. Clay) Newsgroups: comp.sys.amiga Subject: Re: Are there any programs that allow reading Apple ][ disks? Keywords: disk encoding, MFM, GCR, 13-sector, 16-sector, ProDOS, 5.25, 3.5 Message-ID: <15704@pollux.UUCP> Date: 15 Aug 89 15:43:45 GMT References: <495@tardis.Tymnet.COM> Reply-To: bjc@pollux.UUCP () Organization: Department of Electrical Engineering; S.M.U.; Dallas, TX, 75275 Lines: 31 In article <495@tardis.Tymnet.COM> jms@tardis.Tymnet.COM (Joe Smith) writes: > >I haven't come across any other programs (commercial or PD) that read/write >disks for the Apple2. I can understand one obstacle - Apple uses GCR while >everybody else uses MFM encoding. (I have not yet determined whether the >Amiga hardware is flexible enough to allow the software to do GCR or not.) > >Joe Smith (408)922-6220 | SMTP: JMS@F74.TYMNET.COM or jms@tymix.tymnet.com The Amiga has a GCR lookup table built in. In fact, you can use GCR if you prefer, but it only works half as fast as the MFM encoding. The RKM states that the GCR capability in the Amiga is the Apple version. The Amiga is already reading and writing disks using GCR for Central Coast Software product Disk-2-Disk. You see, all of the Commodore drives prior to the Amiga used a form of GCR as well, and Disk-2-Disk can read and write the Commodore 8-bit format, translating PETSCII to ASCII at the same time. The program can move program files as well as text files, and do it in either direction. Betty -------------------------------------------------------------------------- Betty Clay ........texbell!pollux!bjc CompuServe 76702,337 --------------------------------------------------------------------------