13 Jun
2013
13 Jun
'13
11:49 a.m.
Am 12.06.2013 19:59, schrieb Tony Duell:
Sure...
I prefer to modify my classic computers using
devices/technology that is
similar ot the rest of the machine, or that in the very least would have
been aroudn when the machien was in active use. In this case, I guess
using an early 8 bit microprocessor is contemporary with the machine
(there were plenty of RK05s in use in 1975), but I would prefer to do it
with TTL devices only. I shouldn't be too hard, given the quite good
stability of the RK05 spindle speed.
Doing it in TTL only would take LOTS of logic to do it the way I think I want to do it. And it would take LOTS of work. And in the end
you have a big and huge
Writign the firmware takes work too... Remember this si a hobby (at least
for me) so you do the sort of work you enjoy...
and complicated board that costs money and space
inside the drive - both quite
rare resources. And it has fixed functionality.
I only want ti to do one thing -- resector the disk pack.
Does it ahve to fit inside the drive? I am modering if you can make a
device that fits ebtwee nthe drive and the cotroller, the advantage being
that it then converts all deives on that inerface cable. The downside
would be that you woudl ahve to reproduce the sector counter in the
device, and that the secotro count would eb invalind if you change drives
until the next index pulse. But is that a real problem?
-tony