Re: GCR <--CP/M --> MS-DOS and vice versa?

[Eric Smith <eric-no-spam-for-me@brouhaha.com>]

Tony Cianfaglione <ab616@chebucto.ns.ca> writes:
> Could a common ground be found, using these formats, to read/write Apple
> II disks on a PC.  Since both computers can use CP/M, could software be
> written to convert MFM material to CP/M which is then written to a disk.

MFM and GCR are two different low-level formats.  CP/M is an operating
system and a particular high-level file system format.

To a rough approximation, MFM is to GCR as CP/M is to Apple DOS (or ProDOS).

When you use CP/M on an Apple II (using a standard Apple disk controller),
the disk format is still GCR.