> > READ and WRITE are going to be straightforward since the drive is so > "small" compared to the max drive size (24-bit block address?), but > FORMAT is a big question in my mind - what _is_ the DOS card sending > to the SASI controller in the D90x0 drive? It should be easy to find > in the code, since it's attached to the "(N)ew" code, but to my > knowledge there isn't a well-commented disassembly of the DOS board > code out there anywhere. Also, that code will be different between > Rev A and Rev C ROMs, just so you know (45 minute format vs 2 hours on > the same-sized drive). > Would it be useful for me to attempt to extract the DOS board code? I figured this was already available, but I could grab the machine lang code and save to disk (I think) and then post on my web site. I may also have a printout of this drive's ROM, I do know that I have the 4040 drive ROM assembly code printout in a binder. I am not as experienced as many members here, at these things but the task of extracting the D9090 machine code would be a good learning experience for me and I don't mind the effort. Bill Message was sent through the cbm-hackers mailing listReceived on 2009-12-08 21:00:27
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