Originally posted by: dropkickorange
The Port Test Cartridge was designed to work with the Port Test Fixture aka the Double Controller Test Jig. It runs a similar diagnostic check to the Control Deck and Joystick test carts. Does it give you an error if you run it without two controllers plugged in?
Thanks for the info! Yep, with no controllers plugged in I get:
NES CONTROLL DECK TEST
CHARACTOR OK
VIDEO RAM OK
INPUT PORT ERROR
00 00 00 00
Mine is not the most exciting test cart, but I like it!