reading floppy disk data part 6, MFM sector decoding
we fixed some track seeking code errors we had, and now we're able to start getting data from greaseweazle. since the diskette we've got is an ibm pc 1.44MB format we can use the built in ibm pc MFM format decoding module. the good news is that its able to decode *some* tracks...but its not able to decode all of them, like it'll read 10 good sectors in a row, then just cant find any sectors at all - which is a little suspicious. makes us wonder if we got the flux transfer and index pulse encoding right, or if its a formatting thing, because the diskette is readable on a computer with a usb…
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