M9301-YB Bootstrap/Terminator ROM dumps / listings?

Noel Chiappa jnc at mercury.lcs.mit.edu
Wed Apr 29 17:58:23 CDT 2015

    > From: Jorg Hoppe

    > I also have a spare DL11-W to offer

Josh, if you want a second serial line, it's best to use a regular DL11
(M7800), not a DL11-W. (M7800s are available on eBay, for pretty modest
amounts.) The reason is that each DL11-W presents a load on the line clock
signal (from the power supply), even if the line clock on the second board is
disabled; several Dl11-W's, and the line clock signal may get overloaded.

    > From: Josh Dersch

    > I need to scare up a second SLU so I can get an emulated TU-58 hooked
    > up to try booting XXDP

I'm not sure any M9301 variant supports the TU-58? Some are set up to boot
over the console serial line, though. (I haven't yet checked the code, so I
don't know whether you need to feed it the absolute loader first, or if it
will just take .LDA files directly.)

And I just realized you're working with a -YB, and I've been dis-assembling
the -YA! Fat lot of use that would have been! Oh well, I assume the code is
fairly similar, I'll do the -YB next. (Anyone have a dump, to start me off?)

    > comparing the diagnostic/console PROM listings to what I have

Where were those from? Thanks in advance...

    > From: Henk Gooijen

    > I could be wrong, but ISTR that in the first few words of a ROM are the
    > two capitals of the boot device that the PROM supports.

Not in the M9301-YA, in either bank.


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