Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!ames!rex!ukma!rutgers!att!homxb!mtuxo!mtgzz!drutx!druwy!dlm
From: dlm@druwy.ATT.COM (Dan Moore)
Newsgroups: comp.sys.amiga
Subject: Re: A-Max Drives
Message-ID: <3999@druwy.ATT.COM>
Date: 27 Apr 89 14:56:44 GMT
References: <366@nadia.UUCP>
Organization: AT&T, Denver, CO
Lines: 24

in article <366@nadia.UUCP>, agnus@nadia.UUCP (Matthias Zepf) says:
> I think this was a joke of you, wasn't it? You must the mac is writing
> (and reading) a disk at three diffent rotating speeds (depending on
> the track number).

	Actually Mac(tm) drives uses 5 different speeds, ranging from
300 RPM to 600 RPM.  Each band also has a different number of sectors
per track, between from 8 to 12.

> The amiga drive can only simulate one of this three
> speeds. So you can only read 1/3 of the mac disk, but it will every
> time the same 1/3 of the mac disk!! 2/3 are absolut unreadable!

	AMAX includes Mac software that allows you to move about 1/3 of
a standard Mac disk to the portion of the disk you can read with the
Amiga.  Do this three times and you have transfered all of an 800K Mac
disk.



				Dan Moore
				AT&T Bell Labs
				Denver
				dlm@druwy.ATT.COM