NF6X
Veteran Member
sdltrs doesn't appear to like the hard disk data that I extracted with the MFM emulator. Maybe it needs some sort of structured data with a header, rather than a raw sector data dump?
This bit, termed the DBLBIT, will be SET if you requested more than 203 cylinders for a single logical drive. In this case, a logical cylinder is composed of two physical cylinders.
I think I've found newer and better patching instructions HERE in file HDBT2/TXT on the "Hard Disk Driver & Utilities" disk image, which I'm looking at in sdltrs. I'm still confused by one thing, though. The instructions direct me to insert the number of sectors per granule in a particular spot in one of the patch files, but they don't describe how to determine that number. Is this something that would be obvious to an experienced LS-DOS user?
vv = CD F7 43
ww = 20
xx = 40
yy = 08
zz = 0C B0 00 98 1F 67
and it connects to the processor bus on the computer with a 40 line ribbon cable.
Mark, It's a 50 pin connector
Have you tried the MFM emulator with any other systems yet? Mine should be arriving tomorrow. I already have a BBB. Haven't looked into what it takes to set up the software on it yet.