Originally Posted by Bavarese
Thanks. There is a bit of confusion around the hard disks used.

The CP/M 1 tools shown in the screenshot only mention the (larger, later) type H drives.

How did Corvus achieve 20 sectors on MFM drives, by the way?

B drives used IMI 6 meg native flat cable drives
H drives are IMI 5006, 5012 or 5018 which are ST-412 and a formatter board

it is clocked at 11MHz

see corvus_mfm_decoder.c in Dave Gesswein's MFM emulator source for details of the sector format

Last edited by Al Kossow; 01/07/17 12:57 AM.