IBM PC -> Apple // Disk Writer

[mkelsey@eecs.wsu.edu (Michael Kelsey - EECS (Cpts499))]

I have been working on interpreting the data from an IBM diskette, but, I lack
any information regarding the encoding scheme.  Basically, I have been using a PC
hex editor to generate test patterns, from which I read the source disk and
attempt to make since of what I have read.   Whenever I change the data from one
'legal' Apple II hex byte to another 'legal' hex byte, the Apple II drive reads
it properly.  If anyone on this net happens to have information on how a PC
stores its data on a 360k disk, please let me know.  I have plenty of information
on how to control the Apple II UniDisk 5.25", but, I'll take whatever anyone can
provide as well.  

Here's the bad news:  

#1)  My hard drive just crashed...all information from this project is dead :(
#2)  The first drive in my DuoDisk just went kaput today!
#3)  Apple II's cannot read (realiably) bytes with more than two consecutive
      zeroes.  I'm working on a method to get around this (software method, that
     is).

Now the good news:

#1)  The Apple II UniDisk 5.25" can write ____any____ 8-bit byte to the drive.
     My replacement UniDisk (the one that just died today) was able to read 
     seven consecutive zero bits reliably!  It's just too bad that not all the
     drives can do this.

I hope to have some method of transfer as soon as my Apple is up and running,
and, as soon as I get my PC back!

For now, get ProTERM 3.1 and ProCOMM Plus for Windows.  Transfer at 19k
null-modem -- it sure beats 2400 baud on with UNIX.

-Michael Kelsey
mkelsey@eecs.wsu.edu

-P.S.  How about DOOM for the Apple II?  Also, anyone have any GOOD and QUICK
machine language DHR shape drawing routines...like moving a texture-map onto the
screen?