23 Feb
2003
23 Feb
'03
10:24 a.m.
cctech-request(a)classiccmp.org schrieb am 23.02.2003:
----------<snip>-----------
From: Jeffrey Sharp <jss(a)subatomix.com>
Subject: M9312 Bootstrap Questions
First, I'm confused about what version of the module I have. My 11/34 user's
manual (EK-11034-UG-001 '77) talks about a -YA, -YB, and -YF version of the
board.
I also always wondered about this, and never found any clues. But don't
bother,
its not very important. Those variation-codes just describe the situation of
the module at the time the first customer took them from the box, soon as you
change a prom or switch, its something else...
So just run the 9312 diagnostic from XXDP, it will print a nice summary for you
how the unit is momentarely configured and what its capabilities are. It will
also certify correct operation of your M9312 on top of that.
I hope you can boot anything else, do you have a DL11-W? You could use this
with a PeeCee emulated TU58 for diagnostics ect. If you need the Boot-prom for
TU58 write me off-list.
My M9312 has no -Yx designator and has only one
bootstrap ROM installed
(756A9 for RK03/05/05J or TU55/56). The M9312 manual seems to make the most
sense in this case, so I've been believing its side of the story. However,
the DIP switch settings on my M9312 have me puzzled. Here they are:
1 2 3 4 5 6 7 8 9 10
ON ON ON OFF OFF OFF OFF OFF ON ON
This doesn't correspond to anything in either manual! According to the
manual I'm trusting, this says to start executing at 765406 (in the console
emulator ROM). It needs to be 765020 (with diags) or 765144 (without diags).
Supposedly, the machine was functional when it was decommed, so my first
instinct is to assume I am (or the docs are) wrong somewhere. However, its
previous owner (another collector) was not able **IIRC** to get a register
printout at power-up. So maybe the DIP switch is pointing to someplace that
isn't a valid entry point. I don't have access to the complete M9312 print
set, which would list the ROM contents.
Should I reset the DIP switch to say 765020?
That depends on the physical socket-location where the 756A9 is plugged into.
Alternatively, you could use 773000 that will give you console-odt from where
you can interactively select the boot you desire.
Hope you get it to work,
Frank Arnold