G'day Mark - Brief notes...
1) DG part numbers are 005-xxxxxx-yy; 107-xxxxxx-yy numbers are circuit board artwork numbers. Unfortunately, there is no standard cross-reference between the two. Briefly, the part number is the primary reference to be used because a single 107-xxxxxx-yy circuit board may actually contain multiple 005-xxxxxx-yy parts.
The 005-xxxxxx-yy part number usually exists on a label attached to the 15"x15" board stiffener (the side opposite the finger edge connectors). Later DG boards also had an "A" number in addition to the product number ("T"), so if both exist the "T 005-xxxxxx-yy" number determines the exact board function(s).
2) Slot 5 looks like it was also wired for a serial port board (4010 or 4075) at one time since backplane pins A85 and B69 are wired to someplace in the backplane's paddleboard area. But at this point the Interrupt priority and Data Channel priority daisy chains have been jumpered over the slot position to bypass the empty slot. (pins A93/A94, A95/A96)
3) One integral backplane edge connector may have a black "bus terminator" plug to reduce noise on the bus. All DG terminators had a 005- number on 'em for identification.
4) 4075 TTY baudrate pretty easy to check; usually 4800 or 9600 baud, 7 data, even parity, 1 stop bit.
5) The 4060 board probably goes in slot 12 - wire-wrap wires go from slot 12 backplane pins to standard DG 4083 MUX connector distribution panel (the 16 row by 9 (+ 3) inline pins for each of the 4 serial ports plus 12 unused ports).
6) 4046 disc controller board in slot 11 - wire-wrap wires seem to go from slot 11 to edge connector.
Bruce
