ASYNCHRONOUS COMMUNICATION CONTROLLER           ASSY 12-10052-xx

JUMPER SETTINGS

Device            Description                   Configuration

SERIAL PORT 1     COM1 - 3F8H                   E15-E16*
                  COM2 - 2F8H                   E16-E17

                  Interrupt Level 4             E21-E22*
                  Interrupt Level 3             E20-E22
                  
                  TXDATA on Pin 2               E9-E10*
                  RXDATA on Pin 3               E7-E8*
                  High Hysteresis mode          E13-E14*
                       (controls noise)

SERIAL PORT 2     COM2 - 2F8H                   E17-E18

                  Interrupt Level 3             Automatically selected

                  TXDATA on Pin 2               E5-E6
                  RXDATA on Pin 3               E3-E4
                  High Hysteresis mode          E11-E12
                       (controls noise)

* = Factory setting

EXTERNAL EQUIPMENT CONNECTIONS

P1                Serial Port 1 - male DB25 connector
P2                Serial Port 2 - male 20-pin Berg header (requires 
                  (cliffhanger cable assembly)


NOTES:  The jumpers for the second serial port are installed only if the 
        ACC module comes with the optional second COM2 port.