Felix

arcade megawing joystick ports

3 posts in this topic

@jack,

what is the function of the resistors on the arcade megawing?

 

seeing as its not connected to +5 or common ground, and by the value of the resistors themselves,

i am guessing that they are supposed to be current limiting to protect the fpga?

 

i only ask because i was discussing with vlait about reusing the joystick ports to transfer serial data

(interface the port with a PISO shift register)

 

@vlait,

seeing as the pins arent being pulled up/down, i am guessing its doable.

 

 

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Hey, 

 

Yes, they are supposed to protect from just in case a joystick uses the 5V input on pin 7 and outputs 5V on the other pins.

 

Jack.

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