DescriptionRIOT contains 2 8bit ports, timers, IRQ controller and 128bytes of RAM. In Atari consoles it works with joysticks and console switches.
C010750 C016150 UM6532
4 bits of PA are used for first stick, other 4 bits for second stick.
2600: Bits PB0,1,4,6,7 are used for reset, select, b/w, left diff, right diff
7800: Bits PB0,1,3,6,7 are used for reset, select, pause, left diff, right diff
7800: Bits PB2 & 4 are used for output to select 2 button mode. Back (c) 1998-2004 Jindroush Last modified: Tue Dec 3 22:27:52 2002