13 Jun
2026
13 Jun
'26
4:57 a.m.
While you're waiting do try to get the diagnostics going. The TU58FS is
a handy thing to have in your back pocket and can make loading stuff
onto the system a *lot* easier.
As for the RLV21 (and the 18 bit RLV11) it's a combination of analog and
digital things so there are a number of things that can go bad. The
diagnostics should tell you what works and what doesn't, then you can
consider a board level repair.
C
On 6/12/26 23:01, Charles Morris via cctalk wrote:
The RLV12 (RL02 drive controller) in my PDP-11/23+ has
decided to quit
working when it gets hot in the room.
RT-11 won't boot, with an ERR 15 Controller Error.
The defect may have become permanent, will have to check in the morning
when everything's cool.
The drives themselves are not indicating any faults, and both of them
exhibit the same behavior on boot.
Trying to rig up an emulator (or boot XXDP from the Teac 3.5" floppy)
introduces a whole new set of hair-pullers.
Since the RLV12 is so complex, I am tempted just to replace it, if one
can be had... so does anyone have one they don't need? :)
thanks
Charles