30 Dec
2012
30 Dec
'12
4:15 p.m.
emanuel stiebler wrote:
On 2012-12-30
14:18, Rob Jarratt wrote:
I have a Seagate ST-225 that I want to put into
my Micro PDP-11/73.
At the
moment I am just trying to see if the disk works at all and if I can
format
it in a MicroVAX 2000. It spins up but the TEST 70 and TEST 71
commands fail
on it, unable to determine the type of disk. There are some jumpers for
which I have found some documentation here:
http://stason.org/TULARC/pc/hard-drives-hdd/seagate/ST225-21MB-5-25-HH-MFM-S
T412.html, but I am not sure which is pin 1, and I am not sure what
settings
the MicroVAX 2000 wants, or if it needs the resistor termination pack.
Can anyone tell me which jumper settings I need for the disk to work
in a
2000? And whether I need the resistor pack installed?
AFAIRC, it should have the resistors in, as it is at the end of the
cable. And it should be recognized by the TEST70, or it was used on
a different system. Is it labeled as a rd31? Probably you have to do a
real low level format, entering all the right parameters in the TEST70
yourself .