SIT board



Extension board used with The Irritating Maze. Connects to the JAMMA edge, to the output port, and to the various boards used by the game (for lights, air compressor, ticket mechanism...).

The outputs are organized as:
 * 16 2A sink outputs made with D1764 60V NPN Darlington transistors (only 11 populated).
 * 8 500mA sink outputs made with a 2083 Darlington array through resistors.

The 24V input is only used for the discrete clamp diodes on the 2A transistors.

The inputs from the MV1B go through a HC14 inverter except one (reset ?) before going to the EPM7128 CPLD (the same used in Metal Slug X - Super Vehicle-001.

Communication
Serial stuff apparently...