Tek really messed up when they killed the old site. Maybe if more people complained (I did, a bit) they would backtrack ?
I dumped all my notes and screenshots to my website,
and here's also a copy of the important bit:
****
Console port - Option 13 Board - (Signal Name)
A10 - 1 - (D24)
B10 - 3 - (D25)
A9 - 5 - (D26)
B9 - 7 - (D27)
B8 - 2 - (D28)
A7 - 4 - (D29)
B7 - 6 - (D30)
A6 - 8 - (D31)
B1 - 21 - (A1)
A1 - 23 - (A2)
B2 - 25 - (A3)
A2 - 22 - (A4)
+5V (B6) - 24 - (A5)
GND (A3/A8) - 26 - (A6)
B5 - 12 - (INT#)
B4 - 15 - (IOCS#)
A5 - 16 - (SYSRESET#)
A4 - 17 - (RNW)
A3, A8 - 9, 13, 19 - (GND)
B6 - 10, 20 - (+5V)
B3 - not connected
not connected - 11 - (DS#)
not connected - 14 - (DSACK0#)
not connected - 18 - (AS#)
Notes:
- As displayed in the "TDS520B Mod CM" service manual, On the console port "B" is the top side of the processor board.
- Signals A5 (Pin 24) and A6 (Pin 26) need to be set to +5V and Gnd to make sure the serial port of the option 13 board is selected.
- The 3 ground pins (9, 13, 19) should be connected on the option 13 board, so normally you only need to connect one of these to the console port connector.
Nevertheless I connected them all.
- The 2 +5V pins (10, 20) should be connected on the option 13 board, so normally you only need to connect one of these to the console port connector.
****
fenugrec