Talk:General Purpose port
This page was last modified 18:12, 14 December 2019 by Gflorez.

Maybe the schematic is wrong at:

382px-MSX_Joystick_Schematic_Circuit.png


On the picture, the 8 pin(Strobe, Output, Select) is used as Common(return of the buttons) instead of the 9 pin(signal GND).