Multijoy4

[mos6507]

Can someone point me towards a URL for how to build a Multijoy4 interface?

[oesii]

This page is in Czech but the schematics may get you started until some nice Czech person translates it for you :

 

http://www.infos.cz/raster/atari/hw/multijoy.htm

 

and here's an article in this year's issue of myatari with some contact emails:

 

http://www.myatari.net/issues/feb2002/multijoy.htm

[welshleo]

Just been looking at the schematics. There are many ways of doing the same thing (a friend used a number of resistors to generate values for each joystick through the pot lines) but this is a very elegant way of doing things.

 

Think I have a few 74xx138 chips lying around waiting for something to do.

 

I imagine that the best way to program for this device would be to check for each joystick value and store them during a VBI. This should ensure that no lag took place and improve joystick response times. The values would be grabbed when necessary during the main program loop.

 

A more complicated version that would theoretically allow up to 512 players would involve adding a circuit to flip between each joystick in turn and tell the system which joystick was being accessed by sending an ID value through the pot line. Programming would be a little easier as both joystick ports could be used for input.

 

Sorry, mind thinking ahead of itself again

[mos6507]

This page is in Czech but the schematics may get you started until some nice Czech person translates it for you   :

 

http://www.infos.cz/raster/atari/hw/multijoy.htm

 

and here's an article in this year's issue of myatari with some contact emails:

http://www.myatari.net/issues/feb2002/multijoy.htm

 

 

I'm referring to the interface used to allow one to hook up Atari sticks to a PC parallel port for use in emulators as supported by Atari800Win.

 

I need that in order to be able to program for the driving controllers as Atari800Win has no emulation for that via the mouse.