View Single Post
Old 26 September 2010, 22:20   #19
Toni Wilen
WinUAE developer
Join Date: Aug 2001
Location: Hämeenlinna/Finland
Age: 43
Posts: 20,665
"Standard" joypads usually have pullup resistors which fixes the problem completely.

We are talking about joysticks/pad without pullup resistors in button lines. (measure resistance between pin 9 and pin 7, it should measure open when button is not pressed, not something like 10Kohms)


If you are wondering why this is so important when all games that support 2 button joystick/pad work if it it has pullup resistors.

Problem is that there are SINGLE BUTTON only games (for example Dick Tracy) that work strangely if second or third button is enabled and pullup is connected! (no pullups = 2nd/3rd button is totally passive when not pressed, pullups = active and changes io-pin states)

Two buttons are mapped by default in emulation.. (At least 3rd button is not mapped by default..)

Last edited by Toni Wilen; 26 September 2010 at 22:40.
Toni Wilen is offline  
Page generated in 0.06418 seconds with 9 queries