Print Page - Plugging a joystick in causes the keyboard to enter extra keys when typing

Title: Plugging a joystick in causes the keyboard to enter extra keys when typing
Post by: Iwantgames:) on 22:54, 16 March 19

Is it possible to fix these double key presses that I'm getting? The keyboard works perfectly fine until you plug in a joystick.

Title: Re: Plugging a joystick in causes the keyboard to enter extra keys when typing
Post by: GUNHED on 19:39, 17 March 19

Which joystick is it?

Title: Re: Plugging a joystick in causes the keyboard to enter extra keys when typing
Post by: TotO on 19:40, 17 March 19

(megadrive pads does that, because it is not intended to use them without adapters)

Title: Re: Plugging a joystick in causes the keyboard to enter extra keys when typing
Post by: VincentGR on 19:46, 17 March 19

This happened to me with a normal joystick, still work in progress.

Title: Re: Plugging a joystick in causes the keyboard to enter extra keys when typing
Post by: Iwantgames:) on 23:40, 17 March 19

I've tried multiple joysticks.

After a lot of head scratching I finally thought to look at the AY chip. Someone has replaced it at some point with a 8912A and reading online it seems the joystick is a common issue with it. So I need to get a AY-3-8912

Title: Re: Plugging a joystick in causes the keyboard to enter extra keys when typing
Post by: Bryce on 08:34, 18 March 19

Or add the resistor array that's missing in the A version. There's a footprint for it on the PCB.

Bryce.

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General Category => Technical Support - General => Topic started by: Iwantgames:) on 22:54, 16 March 19