Chris Osborn <firstname.lastname@example.org> writes: > I'd like to add the C128 "fast serial" support to it eventually, but I > haven't found anything that says if it's really the same protocol > without the long delays or it's entirely different. I guess I need to > hook up my Saleae and check it out for myself. Arbitration is the same, but the data transfer is completely different and just to make it more annoying there is a completely separate command set for it of which you'll want to implement at least the command for fast-loading a file. You'll need more if you want to support CP/M, which in my opinion is the only excuse one could bring forward to add fast serial support to anything - it assumes that any drive which does not speak fast serial is a 1541, which means that D71 images only work by accident and D81 images not at all unless the device supports fast serial. Or you could implement JiffyDOS, which is a bit faster, available on more systems, can be soft-loaded with no hardware modifications required and still needs a special case for LOAD. -ik Message was sent through the cbm-hackers mailing listReceived on 2014-04-22 21:00:49
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