Date: 	May 26, 2000
From: 	pa.schaefer@fz-juelich.de
Subj: 	RE: Drive schematics
To: 	cturley2@aol.com


Hi Tom,

attached...you will find a schematic diagram and the component
place plan of the Ehring FDC-4 (not -2, that was a typo). In the table x
means closed (geschlossen), o means open.

FDC4.asm is the source code of the 2716 eprom that is executed after PR#6.
The TBP28LS22 prom is a regular P6A from Apple. I also have one or two empty
controller boards (they have been sold as kits, too). It it is interesting
for you, I will scan them.

Another point that may be interesting for your collection: Robert Doerr
(rdoerr@home.com) has reported on a 'prototype' ][plus board he found.
 
http://www.robotswanted.com/pictures/apple2.JPG

This is a clone that was assembled from a kit, in the '80s these kits were
very popular in Europe. I have scanned the assembly instructions, the files
are attached. The text is in German, but at least the tables may be useful
for someone.

For the scans I have chosen an 8bit greyscale format. This results in a
better quality than the pure b/w format, however, the files are somewhat
bigger. 

CloneKit_1.gif
CloneKit_2.gif
CloneKit_3.gif
CloneKit_4.gi
FDC4.ASM
FDC4_pls.gif
FDC4_sch.gif

Best regards
Patrick

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