[comp.sys.apple] scsi tape drive

rbannon@cosmos.acs.calpoly.edu (Roy Bannon) (09/05/89)

I just got a scsi 40meg tape backup that was made for the mac.  I now
have a couple of questions.  First does anyone have a scsi tape driver?
If so, please mail me the name of the company that wrote it.  Second,
I going to attempt to write a driver for it.  What I'm looking for is
how to make supervisory driver calls.  Namely the set_sib_ptr call.
In vol 2 of the gsos reference it says the y-reg should contain the ID
number of the supervisory driver you want.  Is the scsi manager always
2?  Second the way the call is made in the source code example in the
manual is incosistent with the set_sib_ptr doc (i think).  One has the
x-reg being 0, the other has the x-reg being one.  Any help on this
or other problems associated with writing a scsi driver would be
greatly appreciated

Roy
rbannon@cosmos.acs.calpoly.edu