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

The files in this directory were supplied by Olaf Seibert.

Files

8250.notes 2009-08-18 4283
Notes about the files in this directory.
8250ram00 2009-08-18 258
8250ram10 2009-08-18 258
8250ram43 2009-08-18 258
RAM dumps from different pages.

8250rom.dis 2009-08-18 246836
A disassembly of the 901887-01 and 901888-01 ROMs.

8250romfdc-fc00 2009-08-18 1026
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 2009-08-18 20482
Disassembly of the above

data8250 2009-08-18 100
data8250fdc 2009-08-18 20
labels8250 2009-08-18 7919
labels8250fdc 2009-08-18 2484
mk8250rom.dis 2009-08-18 218
routines 2009-08-18 5
d65 control files for creating the disassembly listings from the
8250 firmware

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