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Alpha Microsystems Roadrunner AM-174

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Jumper Settings

Processor

Motorola 68040

Processor Speed

66/80MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

32KB

BIOS

Unidentified

Dimensions

Unidentified

I/O Options

SCSI interface, X-bus connectors (2)

NPU Options

None

34226-1.png

CONNECTIONS

Purpose

Location

Purpose

Location

Power connector

CN1

X-bus connector

J2

SCSI interface

J1

X-bus connector

J3

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

C4

Open

»

Factory configured - do not alter

C5

Open

 

Factory configured - do not alter

C6

Open

»

Factory configured - do not alter

C7

Pins 2 & 3 closed

»

X-bus active termination enabled

C8

Closed

 

X-bus active termination disabled

C8

Open

»

Factory configured - do not alter

JP7

Closed

DRAM CONFIGURATION

Size

Bank 0

4MB

(1) 1M x 36

8MB

(1) 2M x 36

16MB

(1) 4M x 36

32MB

(1) 8M x 36

64MB

(1) 16M x 36

CACHE CONFIGURATION

Note: The location of the 32KB cache is unidentified.

DRAM JUMPER CONFIGURATION

Size

C1

C2

C3

4MB

Closed

Closed

Closed

8MB

Closed

Closed

Open

16MB

Closed

Open

Closed

32MB

Closed

Open

Open

64MB

Open

Closed

Closed

TERMINATION POWER SELECTION

Setting

JP2

»

TERMPWR enabled

Pins 2 & 3 closed

 

TERMPWR disabled

Pins 1 & 2 closed

SCSI BUS SELECTION

Setting

JP1

»

SCSI bus active termination enabled

Pins 1 & 2 closed

 

SCSI bus active termination disabled

Pins 2 & 3 closed

See Also