Tony Duell wrote:
What I would do is first check that the hard disk is
going ready -- that
is with a logic probe on the control connector with the drive cabled up
to the PERQ.
Presumably I can do that on the bench - I think it's just a case of applying
power and twiddling the appropriate drive select line so that the drive
enables the output control signals... (I'll check via bitsavers - I think the
drive selects are active-low)
Worst-case if the drive's hosed, we've got various install disks - just a
question of whether there's a formatter (low or high level) in there somewhere!
cheers
Jules