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# 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
IMG IMG 1
+------------------------------------------------------------+
| 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 | Pins 1 & 2 closed |
| | enabled | |
|---+------------------------------------+-------------------|
| | SCSI bus active termination | Pins 2 & 3 closed |
| | disabled | |
+------------------------------------------------------------+