Xref: utzoo comp.sys.amiga:49413 comp.sys.amiga.tech:9838 Path: utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!rpi!netserv2!deven From: deven@rpi.edu (Deven T. Corzine) Newsgroups: comp.sys.amiga,comp.sys.amiga.tech Subject: Re: Can I read/write Mac disks on my Amiga drive? Message-ID: Date: 8 Feb 90 10:12:41 GMT References: <347@egg-idINEL.GOV> <10607@saturn.ucsc.edu> <2399@cpsc6a.att.com> Organization: Rensselaer Polytechnic Institute, Troy, NY Lines: 32 In-Reply-To: crs@cpsc6a.att.com's message of 5 Feb 90 18:55:36 GMT On 5 Feb 90 18:55:36 GMT, crs@cpsc6a.att.com (Chris (The Home of the Killer Smiley) Seaman) said: Chris> I have long been aware of the variable speed problem regarding Chris> Mac/Amiga transfers, but I have recently read something that Chris> has me thoroughly confused. While 'checking out the Chris> competition', I read a review of a package for the Atari ST Chris> that claims to read Mac disks in the Atari internal drive, and Chris> execute Mac software via emulation. I don't recall the name of Chris> the package, but apparently it consists of nothing more than a Chris> cartridge (there is no Mac drive required). So, how have they Chris> done this? I also remember a utility for the IBM world that Chris> claimed to copy Mac disks in a PC drive, though I never tested Chris> it myself. Apparently this is accomplished by doing funky stuff with the clock rate for reading/writing (already MFM-encoded) bits to the drive, which operates at a constant speed. In other words, the clock rate for the transfer to the drive and/or controller is varied instead of the rotational speed of the disk in the drive. My question is can the Amiga handle a high enough speed to do this sort of trick without hardware modifications? Or, can it possibly read at least by using multiple passes? Deven -- Deven T. Corzine Internet: deven@rpi.edu, shadow@pawl.rpi.edu Snail: 2151 12th St. Apt. 4, Troy, NY 12180 Phone: (518) 274-0327 Bitnet: deven@rpitsmts, userfxb6@rpitsmts UUCP: uunet!rpi!deven Simple things should be simple and complex things should be possible.