Hi Guys,
I want to interface a pic port to a retro computer or arcade machine board of the variety that
expect microswitches to ground the appropriate input pins with action on the connected joystick.
The computers are Amiga, Atari, early Sega, etc, that all use joysticks with female D9 connector.
Since the retro computer’s joystick port pins are probably tied high with resistors already,
I expect it would be possible to just connect directly to the pic and sink the pins,
but this would typically be buffered in some way would it not?
Perhaps transistors such as BC549, or just use a digital logic IC as a buffer?
Any advice would be appreciated.
Cheers, Art.
I want to interface a pic port to a retro computer or arcade machine board of the variety that
expect microswitches to ground the appropriate input pins with action on the connected joystick.
The computers are Amiga, Atari, early Sega, etc, that all use joysticks with female D9 connector.
Since the retro computer’s joystick port pins are probably tied high with resistors already,
I expect it would be possible to just connect directly to the pic and sink the pins,
but this would typically be buffered in some way would it not?
Perhaps transistors such as BC549, or just use a digital logic IC as a buffer?
Any advice would be appreciated.
Cheers, Art.