I seem to recall that when the ribbon cable is in backwards, the fault
light comes on.
Paul
On Fri, Nov 22, 2019 at 7:55 PM Chris Zach via cctalk <cctalk at classiccmp.org>
wrote:
Normally my answer would be "no". *However*
there is mention that
changing 3 jumpers on an RL02 will allow you to read an RL01 pack (not
write).
http://www.pdp-11.nl/peripherals/disk/rl-info.html
So... Maybe. However right now I'm trying to get the disks up. It's been
20 years, and my cables are not in the best of shape. One cable seems
totally dead, as the RL02 flunks when connected to the controller (DRIVE
0 and FAULT always on). With the second cable all lights are off and the
drive spins up and goes ready, however as soon as I try to boot the
drive goes to FAULT. If I remove the 0 drive selector and put in a 1,
the fault goes out, however trying to boot DL1: gives the same error.
This happens on both drives with two different boot packs (old RSXM38
images). So it is either the cable (possible as two pins were bent and
needed to be straightened) or the controller (also a maybe, been 20
years I might have another spare somewhere around here). I'll order some
DeOXit, ohm out the first cable to see if it's bad, and try again next
weekend.
Never dull. On the positive side I saved at least one set of RL02 rails.
So there is that.
C
On 11/22/2019 2:36 PM, Al Kossow via cctalk wrote:
On 11/22/19 11:16 AM, Chris Zach via cctalk wrote:
> That
> could be a problem if I want to re-load Cobol 81 onto this RSTS/E
system.
weren't RL01s usable in an RL02?