William Levak wrote: > > 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: Is there an electronic copy available of that book? > "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." Well, maybe I should check that. The virtual drives (filesystem access) have their own IEEE488 state engine, so this might interfere, and admittedly I did not check that with virtual drives off I think. > 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. But I guess all 4040 ROMs have 664 blocks free, right? Unfortunately I have no idea where the old 3040 drive from our school went, that definitely had 670 blocks free. Thanks! André - 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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