[geeks] SMC6724L2: printset?

[Mouse]

I have an SMC TigerSwitch 10/100, model 6724L2.  I'm trying to get it
up.  (Not because I need another switch; my house network is running on
small unmanaged Netgear gigabit switches now.  Rather, it's because I
am trying to develop some SNMP code and want a "real" SNMP device to
test against.)

It's got a DE9M console port on the back, which used to work fine (this
was once my main house infrastructure switch).  I connected to it now
and it appears to be send-only: I get boot messages fine but I have
been unable to get it to pay attention to anything I send.  I tried a
three-wire cable, I tried a full modem control cable, I tried null
modems, I've tried everything I know and input to the switch appears to
be broken.

On a hunch, I opened it up.  It mostly looks fine, but there was a
bunch of blue-green corrosion.  Right at the console port, between it
and the (presumably) level-shifter IC next to it.

I took it out and scrubbed it down with plain water and an old
toothbrush.  That didn't help.  I assume something got corroded
through, or equivalent.

So I'm looking for a printset, or something enough like one to help me
figure out what pin is what.  I'm prepared to connect to the
serial-port side of the level-shifter chip, or even to cut an etch run
and connect to the logic-level side of it.

But I'd need to know what to connect to.  So I'm looking for some sort
of printset.

The serial port is on a board by itself, with just the serial port, the
lights, and a few small chips I assume are drivers (for the LEDs) and
level shifters (for the serial port).  This connects to the main PCB
with a 17x2-pin connector, somewhat like an IDE or floppy Berg but with
much finer pin spacing.  (If I'm reading the tape right, the spacing
looks like 15 spaces in 3/4 of an inch, or 1/20 of an inch, as
precisely as my tape can measure it; using the mm scale, the spacing
looks like 16 inter-pin spaces in 20.5mm, which is within 1.009% of
1/20 of an inch.)

I have not found anything that looks to me like a part number on the
small board, the one with the serial port and LEDs.

My first impluse was to check bitsavers.  But I don't see it anywhere
obvious.  I tried to rsync the archive.  But my rsync and their rsync
don't get along; I'm sending

@RSYNCD: 26

and they're sending

@RSYNCD: 31.0
bitsavers
@RSYNCD: OK
--server
--sender
-vvlogDtpr
--delete
.
bitsavers


at which point my end gives up with a protocol version mismatch
complaint.  I'm looking at version-jumping rsync, but I expect that to
be a very time-consuming exercise, and even then there's no assurance
bitsavers has what I'm after.  My (minimal) Web skillz didn't find
anything, whether or not I specify site:bitsavers.org.mcg

So...anyone know of a source for this info?

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