U3
Other components on Atari 2600
About this component
The RIOT supplies all 128 bytes of the 2600's work RAM, reads the joysticks and console switches through its two 8-bit ports, and provides the programmable timer games use to time the vertical blanking period. A faulty RIOT typically shows as crashes, garbage or unresponsive controls.
What it does on this board
Provides the 128 bytes of RAM, I/O ports and a timer.
Pinout & readings
No pinout or reference readings yet — these show what each pin does and what a healthy part should measure.