Specifications

Page 12 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade
8.0CONFIGURING ROADRUNNER AND AM-986 BOARDS
The next three sections supply jumper configuration information for the Roadrunner
AM-172 and AM-174 boards, as well as the AM-986 board. The illustrations show the
configuration jumpers for each printed circuit board set in their factory default positions.
8.1Roadrunner AM-172 Board Configuration
The illustration below shows the AM-172 board configured as shipped by Alpha Micro.
The only user configurable jumpers on this board are the JP5 and JP6 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
030
ALPHA
MICROSYSTEMS
DWB-00172-00 REV. XXX
JP4
JP16
JP15
JP17 JP18
JP3
JP1
JP2
J2
J3
J5 J6
J1
JP1
1
2
3
JP1 SET TO PINS 1 AND 2 = TERMPOWER DISABLED
JP1 SET TO PINS 2 AND 3 = TERMPOWER ENABLED (FACTORY DEFAULT)
JP2
JP2 SET TO PINS 1 AND 2 = SCSI BUS ACTIVE TERMINATION ENABLED (FACTORY DEFAULT)
JP2 SET TO PINS 2 AND 3 = SCSI BUS ACTIVE TERMINATION DISABLED
1
2
3
JP6
JP5
JP19
JP6
JP5
JP6
JP5
JP6
JP5
4MB 8MB 16MB
MEMORY CONFIGURATION
JUMPERS
OSCILLATOR JUMPER (DO NOT REMOVE)
CACHE ENABLE / DISABLE JUMPER
IN = DISABLED
OUT = ENABLED (FACTORY DEFAULT)
TEST JUMPER (DO NOT INSTALL)
OSCILLATOR JUMPERS
(DO NOT REMOVE)
TEST JUMPER
(DO NOT INSTALL)
X-BUS
CONNECTORS
50-PIN SCSI
CONNECTOR
BOOT PROM
MEMORY SIMM CONNECTOR
X-BUS ACTIVE TERMINATION
IN = ENABLED (FACTORY DEFAULT)
OUT = DISABLED
INDICATES PIN-1
FOR ALL CONNECTORS
MAC924
JP6
JP5
32MB
PIN-1 INDICATOR
AM-172 Board Configuration
PDI-00172-40, Rev. A05