how to use only lower track (head 0)

[hwrdmltn]

SSDD disk? You will get good results with the "C64/128" setting if you use a 48 TPI drive, which I can assure you that you're using one right now. Note that you must have half tracks disabled. Make sure to set the TPI setting as well.

Yes, but I want MFM, not GCR - these are for Kaypro SSDD 48tpi CP/M.

The buffer will be different every time you read it (if you are looking at the flux data) because the flux changes lengths during reads due to the drive hardware clocking, drive speed, etc.

I'm primarily interested in the data only, not the gap or post amble or other envelope information. Just the information as the HOST would see it. The HOST is usually not privy to info way down to the flux changes. Turning off the sync, headers, and invalid data did not produce repeatable results, of course I could be interpreting the concept all wrong here......

Thanks

W1ARQ Howard