29 Apr
2011
29 Apr
'11
3:36 p.m.
In the ongoing saga of my attempt to get RT-11 to run on my 11/34 .... =
(I'll spare the bandwidth by not attaching the entire chain of experiments =
run ...)
Checked my copy of RT-11 and indeed it was SYSGEN'd. In my latest =
attempt, I did a SYSGEN as well, this time choosing to build a very, very =
basic version of RT-11SJ on RX-01. No FPU support, no timers, nothing =
fancy. Added device support for TT, DX, and DU devices only (the 11/34 =
has no installed DU device at all, I wanted to add it for future considerat=
ion).
As expected, it went off for over a half-hour rebuilding RT-11. Produced =
the expected files and I proceeded to make the disk bootable. It boots on =
the LSI-11 system (an 11/73A) just fine. Put that same RX-01 disk on my =
11/34 via an M7846 controller and when I tried to boot it I get the exact =
same result as before: it starts to boot, steps four tracks or so, then =
halts at "005134" on the display. If I inspect that address, it contains =
"140000".
Sigghhhhh.
Any thoughts as to what it could be? Disk controller card (M7846)? =20
I think what I would do next would be one or other of the following :
1) Build a version of RT11 without DU support. I can't see why having
that would be a problem, but try to have a version built just for the
hardware you have. No other options.
2) I might be the RX11 board, I guess. I think I would see if it's
generating interrupts, and if so, if it only geneates one before the
system falls over (maybe indicating a problem with the interrupt logic on
that card, the vector output buffers, etc).
-tony