Floppy drive controllers
CBM-1581 clone DCN-2692
Click this link
CBM archive at
zimmers.net. Schematics & service manual for Commodore 1581 as well as
chipdata for Commodore ICs, such as 6502 and 6526 CIA
1581 Service Manual, html format
www.6502.org Data for 6500 series chips.
And other 6502 related documents.
4x4.hopto.org and a
Amiga schematics and
documents. 8520 CIA data in the file "a500_2000trm_3.zip"
"Probing The FDC" Article about Atari ST:s floppycontroller, WD1772
"How to use a PC 3.5" HD disk drive with your FZ-1" (Casio and PC floppy
Roland W-30 uses a WD1772
bits of information
Try "google" search with the searchwords Atari WD1772
WD1772 was used in the Atari ST machines, and some people made
the chip work with high density HD-floppies. It seems you need a
"02-02" version of the WD1772 to be able to use HD-floppies by
doubling the clock from 8 MHz to 16 MHz.
An earlier commodore 1581 disk drive clone controller card.
It is built using mixed techniques of printed circuit
board and soldered wire links.
A good example of how one should have taken mounting hole locations
in to account before making the board design.