M9301-YB Bootstrap/Terminator ROM dumps / listings?

Jörg Hoppe j_hoppe at t-online.de
Mon Apr 27 01:01:53 CDT 2015


here some resources which may be helpful:

- can you run the console emulator?
   To boot: Set all switches on the M9301 to ON and power on
   OR enter 165020 LAD CTRL-START

- if the console emulator runs, you can load any paper tape image 
diagnostic with my PDP11GUI
- I organized all known PDP11 diagnostics material into a database
There you can download paper tape images, and also the *.BIN and *.BIC 
from XXDP disks. These are in papertape format too.
- I found that the "-YA/B/C../F.." label on M9301's doesn't necessarily 
match the ROM content.
- I have dumps of M9301-YA and -YF
- I can burn M9301 ROMs
- and I also have a spare DL11-W to offer


Am 27.04.2015 um 07:47 schrieb Josh Dersch:
> The 11/34 seems to be pretty healthy, I've punched in some code to do
> some basic testing and the CPU seems to be capable of running simple
> programs and the RAM seems capable of holding data.  So that's good.
> I've also verified that the console SLU is at the right address and
> vector (it wasn't initially, due to a pair of bad DIP switch blocks),
> and I can read/write characters from/to it. Huzzah.
> The bootstrap ROM doesn't seem to be executing properly, however. After
> power-on or a BOOT/CTRL It'll run for a fraction of a second and then
> halt, leaving me at address 0 with 161721 displayed.  ROM Data appears
> at the expected addresses (773000-773777, 765000-765777) but I don't
> know if it's at all correct.
> I need to scare up a second SLU so I can get an emulated TU-58 hooked up
> to try booting XXDP, but in the meantime I thought I'd see if I could
> verify the ROM contents manually (it's only 512 bytes long).  I can't
> find a listing, however -- the operator / maintenance manual doesn't
> contain it and I haven't found it anywhere else.  I've found a reference
> to a microfiche, "EP-M9301-RL-A" that supposedly contains these
> listings, but it doesn't appear to be archived anywhere.  Anyone have
> this, or have dumps of the M9301-YB PROMs?
> Thanks,
> Josh

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