Table-based version

Directory /pub/cbm/firmware/drives/old/8050/d/

The files in this directory were supplied by Olaf Seibert.

../

[Parent directory]

8250.notes

Notes about the files in this directory.

8250ram00

8250ram10

8250ram43

RAM dumps from different pages.

8250rom.dis

A disassembly of the 901887-01 and 901888-01 ROMs.

8250romfdc-fc00

This is the contents of the 6530 RIOT chip for the floppy controller (unknown revision, looks like a slightly patched 901869-01)
Ville Muikkula reports that his 8250LP has a little circuit board inserted in the place of the floppy drive controller 6530 RIOT chip. Located on this circuit board are the original 901869-01 and a 2732 EPROM chip that has a label with part number 251474-01B, and agrees with this dump. The extraneous 3 kilobytes of the 2732 are filled with $aa.

8250romfdc.dis

Disassembly of the above

data8250

data8250fdc

labels8250

labels8250fdc

mk8250rom.dis

routines

d65 control files for creating the disassembly listings from the 8250 firmware

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