Ultimate FDC? (Was: IBM 6360 - Filesystem(ish) info?

Wed Feb 20 23:00:20 CST 2019

On Wed, Feb 20, 2019 at 11:40 PM Warner Losh via cctalk
<cctalk at 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