"John Fields" wrote in message
...

Perhaps if I explain exactly what I want to do it will be a little
clearer.
I have built an arcade machine with 8 momentary SPST switches. These, as
well as a joystick, connect to an xbox pad so I can use it to play xbox
games. Currently I have a SPST toggle switch which energises a 4 pole
relay.
When energised this physically disconnects the arcade controls and
connects
a normal xbox pad. I want to remove the toggle switch and replace it with
a
circuit which will toggle between the arcade controls and the xbox pad
only
when I press all of the buttons on the arcade controls at the same time.

---
OK, that can be easily enough accomplished, depending on what you've
got the eight momentary switches hooked to. Hopefully, you're
switching either Vcc or ground on _all_ of them and we can use
something like an 8-input AND or NAND to decode the all-buttons-down
state and toggle the latch. Can you post a schematic of what you've
got or describe the circuit in a little more detail?

One of the legs of each momentary switch is connected to a common ground,
which comes from a single point on the xbox pad, then daisy chains to each
switch. This includes the four switches for the joystick I think. The other
side of each switch then goes to its own point on the pad. I haven't
measured what is going across the switch when it is closed, but I can do
this if necessary.

Is that enough information? I can post more or a schematic if you need me
to.

I really appreciate all your help!

Thanks
Mark