The Commodore 1581 is a 3,5 inch drive with serial bus connection. The drive used a normal MFM controller and a double density drive mechanism.


3rd party modifications to the 1581 ROM.


1581-rom.318045-01.bin 1995-03-13 32768
System firmware, first version. This chip has also been numbered 312558-01.
1581-rom.318045-02.bin 1996-09-12 32768
System firmware, second version.
1581-rom.beta.bin 1996-09-12 32768
This is said to be a beta version of the 1581 system firmware.
1581ref.txt 1996-09-12 10002
1581zp.txt 1996-09-12 11022
A few cross-references for the 1581 firmware 318045-01, created by Asger Alstrup <alstrup@diku.dk>.

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