[HECnet] SC-40

[Peter Lothberg]

Straight gives me gibberish, null gives me output. I'll find my straight.
FWIW, if the SC40 is wired like a "real" DEC computer, then a null modem
cable would be required between the console DB25 and a VTxxx.

If the wiring (ground) was even close to correct, either crossed or non
crossed should give NO characters.   -:)
None of the pins on the connector are ground. That'd explain some things.

Two options:
      - A cable is loose/bad
      - In it's previus life someone had a ground loop, eg, like if 
          you plug the SC40 in to a non-grounded plug and the terminal is 
          grounded.

Suggest you solve this problem, trace pin 7 back to the sparc board.

---P