Hi All, I need some advice about the B-A command as I'm in the middle of implementing this support to 64HDD and my thinking is to fix the bug(s) rather than implement them, but am wary of compatibility. Does anyone know if the B-A bug (which when a block is already allocated, it allocs the whole track and jumps to the next track to search for a free block) is only a 1541 trait, or whether it is also in the 1571 and 1581 ROMs? Also, there is the question of allocation on the directory track. The 1541 as I understand it can return a free block in Track 18, which supposedly it shouldn't. Do the 1571 and 1581 drives also point to their respective dirs (eg 18/53 or 40) when the next block is given? The 1541 programs I've seen test for T18 being returned and skip the answer and re-check, but what do the newer drive types. Does anyone know of where the bug may be relied upon to do some thing useful? Also, if anyone has any understanding of the behaviour of the FD2000 drive, regarding the B-A command, this will also be helpful. Regards, Nick PLEASE TAKE NOTE: The contents of this email (including any attachments) may be privileged and confidential. Any unauthorised use of the contents is expressly prohibited. If you have received this email in error, please advise us immediately (you can contact us by telephone on +61 8 9441 2311 by reverse charge) and then permanently delete this email together with any attachments. We appreciate your co-operation. Whilst Orbital endeavours to take reasonable care to ensure that this email and any attachments are free from viruses or other defects, Orbital does not represent or warrant that such is explicitly the case (C) 2000: Orbital Engine Company (Australia) PTY LTD and its affiliates Message was sent through the cbm-hackers mailing list
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