> 
> A friend got an SLC at an auction; apparently the display is dead, though
> it beeps the keyboard at power up.  It has one of those funky combined
> serial ports... could someone send me the pin out of the port, and how
> to get an SLC into diag or otherwise talk to the serial port?

If it's a DB-25 connector then you should be able to use it with a
normal null-modem cable. Without the extension cord that splits it into
two ports it defaults to port A.

 -- Stefan