On 2/20/19 3:40 PM, Warner Losh wrote: > The RX50's are MFM encoded. There's no FM anything on it, unless it's > that way on all MFM diskettes. > > Other DEC diskettes may have done this, but RX50's are just higher track > density, but old pre IBM-AT data encoding rate diskettes. > > At least on the Rainbow the floppy chip is kept in MFM mode all the > time, unless you've written something to hack it to read alien disks.
You're quite correct--I didn't notice the "RX50" until I'd posted. No, I was thinking (as probably was the OP) of RX02 double-density. --Chuck
