On Wed, Feb 20, 2019 at 11:40 PM Warner Losh via cctalk <cctalk@classiccmp.org> wrote:
> 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. And modified the hardware. On the Rainbow the 'Dden/' pin of the floppy controller chip is tied to ground forcing said chip into MFM mode. -tony