Osborne's "PET Personal Computer Guide" lists a whole page of bugs with DOS 1. The only one that refers to the IEEE bus is as follows: "Occasionally during a multiple Get command, the disk unit transmits a data byte onto the bus that may appear to other peripherals like a command from the computer." As far as I can tell, the ROMs on funet are correct. I do not have the original ROMs and have not been able to find any EPROMs that work in the double drives, so I cannot verify them. Commodore numbered their parts a little differently at the beginning than they did later. All the ROMs of the same type were numbered in sequence, regardless of how they were used. All the parts lists that I have seen list only the part numbers you listed. I do not recall there being any others. The missing numbers may have been prototypes or ROMs for totally different equipment. Most 2040/3040 drives were upgraded to 4040s when the new ROMs were released. Drives with 2040/3040 labels on the outside probably do not contain 2040/3040 ROMs. You will have to check the part numbers on the ROMs to be sure. - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tcm.hut.fi.
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