Path: utzoo!attcan!uunet!van-bc!
From: lphillips@lpami.wimsey.bc.ca (Larry Phillips)
Newsgroups: comp.sys.amiga
Subject: Re: Reading 1581 disks
Message-ID: <2041@lpami.wimsey.bc.ca>
Date: 25 Sep 90 11:20:58 GMT
Lines: 28
Return-Path: <lpami!lphillips>
To: van-bc!rnews

In <439@cbmger.UUCP>, peterk@cbmger.UUCP (Peter Kittel GERMANY) writes:
>In article <1990Sep24.173635.2012@bushido.uucp> jamesb@bushido.uucp (Jim Harvey) writes:
>>The TRANSFER utility program that comes with the ReadySoft C64 Emulator II
>>will do this.  It will also read a 1541 formatted disk in a 1020 drive, and
>                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>will read and write to a real 1541 drive with the use of an included adaptor.
>
>Is this REALLY true? With all the track-to-track read speed changes in
>the 1541 format? How do they manage that? Is the data density on a 1541
>so small compared to an Amiga or PC that these variations can be easily
>followed by the decoding software? Sounds very interesting.

If memory serves, there were no track to track red speed changes... only a
smaller number of sectors per track as you approached the center of the disk.
This happened in zones. It's been a while though. I could be mistaken. I
do remember being a little baffled about this when Don Lekei and I were writing
DiskDoctor (the PET one, not the Amiga one).

-larry

--
It is not possible to both understand and appreciate Intel CPUs.
    -D.Wolfskill
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|   //   Larry Phillips                                                 |
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