Zimmers.NET Files (formerly ftp.funet.fi)


The 1551 was designed for the Commodore 264 series of computers, consisting of the C16, C116 and plus/4. Replacement eprom for firmware is the 27128


Commodore 1551 schematic diagrams


1551.251641-3.c 2009-08-18 2263
This C program contains the logic equations of the PLA.

1551.318008-01.bin 2009-08-18 16384
The only known version of Commodore 1551 disk drive firmware

pla.251641-03.bin 2015-03-07 65536

README 2009-08-18 4591
Information about the 1551 disk drive

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