[Simh] Error in DMC11/DMR11 Emulation in RSTS/E 10.1

[Christian Gauger-Cosgrove]

On 3 January 2016 at 16:42, Paul Koning <paulkoning at comcast.net> wrote:
> No, that's not what that means.
>
> It does say that micro diagnostics are required; when those are disabled, the device is rejected because of that failure.
>
Note that XM0 and XM1 provide the same "XMn: is missing ECO's, but
will still function" as XM4; and XM4 has the micro-diagnostics
DISABLED all three of those devices are TYPE=DMC and INIT accepted all
three. The rejected devices are XM2 and XM3 which were defined as
TYPE=DMR (one with and one without micro-diagnostics).


> However, it also says that "XM0: is missing ECO's, but will still function."  That means the device is enabled, and it should be there and work when you start the system.  More precisely, if it doesn't work that would be for a different reason.
>
I was assuming that the "XM0: is missing ECO's, but will still
function." error meant that the specific DMC11 (since the DMR11
doesn't work) would still function, even though the micro diagnostics
aren't the latest revision. At least if I'm not misremembering aren't
ECOs revisions to the device (hardware, microcode, or both)? (Or have
I completely gotten confused.)


> Tried what with QBus?  DMC?  Only a DMV is valid on Qbus.
>
Yes, I tried to use the DMC with QBUS. Somehow, don't ask me how, but
I got SIMH into a state where the DMC was enabled on a QBUS (11/93)
machine... SIMH promptly crashed hard one made to start (told it to
boot a device... and crash) as one should expect from abusing it like
that. So that can be an ignored issue perhaps.

Also, correct me if I'm wrong: There is no emulation of the DMV11,
isn't there? Only QBUS DDCMP device I see is the DPV11 (which I'd like
to point out: Doesn't work in RSTS/E as far as I've seen).


Cheers,
Christian
-- 
Christian M. Gauger-Cosgrove
STCKON08DS0
Contact information available upon request.