[comp.misc] Pointers to black art techniques.

edwardsa@frith.msu.edu (03/29/91)

I'm frustrated!  I've searched high and low for some sort of material that
talks about low-level control of hard disks, floppy disks, tape drives and 
the like, but I can't find anything.  Where do people learn about this?

Any pointers would be appreciated.

P.S.  By low-level control I mean the kind of software that controls a
      hard drive (say) though the CPU's I/O ports or through certain
      portions of memory, if memory-mapped I/O is used.