Re: Floppy disk

[mjmahon@aol.com (Michael J. Mahon)]

Francis Yarra wrote:

>Hey.. "The Apple IIe uses GCR encoded disk"s !!!  Anyone know if the
>Commodore
>1541 or 1571 disk drives can read these DOS 3.3 formatted disks, as it too,
>uses GCR encoding ?? I have some pretty powerful GCR nybbler/editor software
>(online at http://members.aol.com/fyarra001 in "copy protection") for backing
>up non-standard GCR formats for the purposes of making working copies of
>copy-protected disks. I am curious if I could use the 1541/71 to pull a 3.3
>disk image into a C64 emulator file type then transfer that onto a 1581 which
>is an MFM encoded format.

Good luck.  There are many flavors of GCR, and the Apple flavor,
devised by Woz, et al., is probably not much like the C= flavor.

It's more than data format, it's data encoding.  In the Apple encoding
is all software.  I seem to recall that in the C= drives, it's in hardware
(or alt least firmware).

-michael

 Email:  mjmahon@aol.com
 Home page:  http://members.aol.com/MJMahon/