Quote from: andycadley on Yesterday at 19:17There's also a slight difference in LD A,R/LD A,I behaviour according to @arnoldemu
Quote from: McArti0 on Yesterday at 18:56But SymbOS working
Quote from: eto on Yesterday at 20:17Just to avoid confusion: The DDI-1 is the floppy controller for the 464 with AMSDOS, the disk drive alone is the FD-1.Hi Eto
Generally speaking all you need is a 1:1 connection from edge connector to IDC floppy connector. An old PC floppy cable that has both connector types for 3.5" and 5.25" would perfectly fit (as long as no pins are flipped).
The FD-1 injects 5V into some of the wires, that are not required on the 34p cable. The DDI-1 is using that power for its electronics. On the CPC - at least according to the schematics, these pins are not connected. So (in theory) it should be save to simply connect the FD1 with a normal cable to the CPC.
HOWEVER:
1) I have never tried myself and verified it.
2) Also it's easy to attach the cable upside down as neither the FD-1 connector nor the edge connector on the CPC prevent that - or you can just mix up directions when crimping the cable. Cutting the tracks won't help if you connect the cable upside down. Not sure if the 5V injected by the drive can harm the computer but To be honest I would prefer not to try it out and just disconnect the 5V injection inside the FD1.
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