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# SIEMENS NIXDORF INFORMATIONSSYSTEME AG
SYSTEM BOARD D931
Processor Pentium Pro
Processor Speed 150/166/180/200MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 256MB
Memory
Maximum Video None
Memory
Cache 256KB (on Pentium Pro CPU)
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), serial port TTL, riser slot, IR
connectors (2), remote on connector, chipcard
reader connector, soft off power supply
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN1 | IDE interface 2 | CN11 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | Speaker | J1 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN3 | Front panel | J2 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Parallel port | CN4 | Front panel | J3 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Serial port 2 TTL | CN5 | On/off switch | J4 |
|-------------------+----------+------------------+----------|
| Remote on | CN6 | Chassis fan | J5 |
| connector | | power | |
|-------------------+----------+------------------+----------|
| Chipcard reader | CN7 | IR connector | J6 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Soft off power | CN8 | Front panel | J7 |
| supply connector | | led/IR connector | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN9 | Riser slot | SL1 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN10 | | |
|------------------------------------------------------------|
| Note: If CN7 is used, no device may be connected to |
| CN2. If CN5 is used, no device may be connected to |
| CN3. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Floppy drive write protect | FDP | Open |
| | disabled | | |
|---+---------------------------------+-------+--------------|
| | Floppy drive write protect | FDP | Closed |
| | enabled | | |
|---+---------------------------------+-------+--------------|
| » | BIOS write protect disabled | FLP | Open |
|---+---------------------------------+-------+--------------|
| | BIOS write protect enabled | FLP | Closed |
|---+---------------------------------+-------+--------------|
| » | BIOS started from the system | RCV | Open |
| | module | | |
|---+---------------------------------+-------+--------------|
| | BIOS started from floppy and | RCV | Closed |
| | restores BIOS | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | SKP | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 256KB cache is located on the Pentium Pro CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | CF0 | CF1 | CF2 | CF3 | F0 | F1 | F2 |
|--------+-------+-------+-------+-------+-------+-----+-----|
| 150MHz |Closed |Closed |Closed | Open | Open |Open |Open |
|--------+-------+-------+-------+-------+-------+-----+-----|
| 166MHz |Closed |Closed |Closed | Open |Closed |Open |Open |
|--------+-------+-------+-------+-------+-------+-----+-----|
| 180MHz |Closed |Closed | Open |Closed | Open |Open |Open |
|--------+-------+-------+-------+-------+-------+-----+-----|
| 200MHz |Closed |Closed | Open |Closed |Closed |Open |Open |
+------------------------------------------------------------+