ALPHA MICROSYSTEMS
ROADRUNNER AM-174
|
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 |
|
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 |