Specifications
Page 16 Installation Instructions: Roadrunner 030 & 040 AM-1000 / AM-1200 Upgrade
9.2Roadrunner AM-174 Board Configuration
The illustration below shows the AM-174 board configured as shipped by Alpha Micro.
The only user configurable jumpers on this board are the JP11, JP12, and JP13
memory configuration jumpers. These jumpers only need to be reconfigured if you
change the amount of memory installed in your computer. All other jumpers on the
board should be left in their factory configured positions. All possible configurations for
the memory jumpers are shown in the illustration.
NCR
ALPHA
MICROSYSTEMS
ALPHA MICROSYSTEMS AM-174
JP7
JP2 JP1
J1
J2 J3
J4
JP17
JP9
JP10
040
JP6
JP13JP11JP12
JP1
1
2
3
JP2 SET TO PINS 1 AND 2 = TERMPOWER DISABLED
JP2 SET TO PINS 2 AND 3 = TERMPOWER ENABLED (FACTORY DEFAULT)
JP1 SET TO PINS 1 AND 2 = SCSI BUS ACTIVE TERMINATION ENABLED (FACTORY DEFAULT)
JP1 SET TO PINS 2 AND 3 = SCSI BUS ACTIVE TERMINATION DISABLED
OSCILLATOR JUMPER (DO NOT REMOVE)
OSCILLATOR JUMPERS
(DO NOT REMOVE OR RECONFIGURE)
X-BUS
CONNECTORS
50-PIN SCSI
CONNECTOR
BOOT PROM
MEMORY SIMM CONNECTOR
X-BUS ACTIVE TERMINATION
PIN-1 INDICATOR
JP13JP11JP12
4MB
8MB 16MB 32MB 64MB
JP13JP11JP12
JP13JP11JP12
JP13JP11JP12
JP13JP11JP12
MEMORY CONFIGURATION JUMPERS
JP2
1
2
3
INDICATES PIN-1
FOR ALL CONNECTORS
FACTORY USE ONLY, NO JUMPERS INSTALLED
IN = ENABLED (FACTORY DEFAULT)
OUT = DISABLED
MC1057
JP16
JP14
JP15
AM-174 Board Configuration
PDI-00172-10, Rev. A03