On Mon, Jan 4, 2021 at 3:40 PM Chris Zach via cctalk <[email protected]> wrote:
> Can someone check to see if a RQDX2 used the Western Digital chips to > interface to MFM drives? Reason I'm asking is the MFM emulator can > identify an RQDX3, and also a Pro/350 controller but this particular > RD52 I have (which was verified by me to run Digital Mumps) is reading as: > > root@beaglebone:~/mfm# ./mfm_read -a > Board revision C detected > Found drive at select 3 > Returning to track 0 > Drive RPM 3525.4 > Matches count 36 for controller WD_1006 > Header CRC: Polynomial 0x1021 length 16 initial value 0xffff > Sector length 512 > Data CRC: Polynomial 0x1021 length 16 initial value 0xffff > Interleave mismatch previous entry 0, 9 was 1 now 0 > Selected head 8 found 0, last good head found 7 > Read errors trying to determine sector numbering, results may be in error > Number of heads 8 number of sectors 18 first sector 0 > Unable to determine interleave. Interleave value is not required > Drive supports buffered seeks (ST412) > Disk has recalibrated to track 0 > Stopping end of disk search due to recalibration > Number of cylinders 512, 37.7 MB > 18 sectors seems odd. The Rainbow had a limit of 16 sectors, but that may have been due to other reasons... It had a WD10xx controller. Warner
