DEC MKA11 and/or M8261/M8163
pbirkel at gmail.com
Sat Feb 7 08:25:41 CST 2015
I don't understand the role of the M8162 "Port MUX A module" and M8163
"Port MUX B module" that the field-guide claims to be part of the MK11.
They aren't part of the MK11 as far as any documentation that I've read
regarding it. At least the M8162 has a pair of 20ma-style SLU connectors
on it, but no UARTs that I can see.
Do these modules really belong to the MKA11, rather than the MK11? Or to
something else entirely?
Is the MKA11 (which I can't find documented online) a revised MK11? The
field-guide seems to imply this given its entry for the M8164 which
basically reads like this:
M8158 MK11 U Address buffer module
M8159 MK11 U Data buffer module
M8160 MK11 U Control A module
M8161 MK11 U Control B module
M8162 MK11 U Port MUX A module
M8163 MK11 U Port MUX B module
M8164 MK11/MKA11 U Data buffer module (Replaces M8159)
It seems to me that something is incorrect in the field-guide, but none of
my researches have identified where the error is and what the right
answer(s) might be.
Anyone here have any experience/knowledge with/of the MKA11 and/or the
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