View Single Post
Old 28 November 2015, 15:43   #82
Daedalus
Registered User
 
Daedalus's Avatar
 
Join Date: Jun 2009
Location: Dublin, then Glasgow
Posts: 6,374
Quote:
Originally Posted by Shatterhand View Post
I'll still try to remove pins 5 and 7 from one of my mega-drive pads to see if it works.
The Megadrive pads need pin 5 of the pad connected for powering the multiplexer chip. If it works straight off, it's pin 5 that's powering it but that's not ideal, so it should really be connected to pin 7 on the Amiga.

Actually, thinking about that now, the fact that MD pads work without modification in 2-button mode sort of proves that pin 5 is held high by default, since it's this current sourcing that powers the multiplexer - otherwise it just wouldn't work...
Daedalus is offline  
 
Page generated in 0.06827 seconds with 10 queries