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# SIEMENS-NIXDORF INFORMATIONSSYSTEME AG
SYSTEM BOARD D981
Device Type Mainboard
Processor Pentium II
Processor Speed 233/266/300/333/366MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 512MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 512KB (located on Pentium II CPU)
BIOS Unidentified
Dimensions 305mm x 244mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
game/MIDI port, green PC connector, IDE
interfaces (2), Ultra Wide SCSI interfaces
(2), parallel port, PS/2 mouse port, serial
ports (2), IR connector, USB connectors (3),
ATX power connector, AGP slot, line in, line
out, microphone in, audio in – CD-ROM
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| AGP slot | AGP | Soft off power | C18 |
| | | supply | |
|-------------------+----------+------------------+----------|
| ATX power | ATX | Intrusion | C19 |
| connector | | connector | |
|-------------------+----------+------------------+----------|
| Auxiliary in | C1 | Game/MIDI port | CN1 |
|-------------------+----------+------------------+----------|
| Audio in – CD-ROM | C2 | Microphone in | CN2 |
|-------------------+----------+------------------+----------|
| Voice modem | C3 | Line in | CN3 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Device ID & | C4 | Line out | CN4 |
| temperature | | | |
|-------------------+----------+------------------+----------|
| USB connector - | C5 | Parallel port | CN5 |
| internal | | | |
|-------------------+----------+------------------+----------|
| Chassis fan power | C6 | Serial port 1 | CN6 |
|-------------------+----------+------------------+----------|
| Power supply | C7 | Serial port 2 | CN7 |
| monitor | | | |
|-------------------+----------+------------------+----------|
| Chip card reader | C8 | USB connector 1 | CN8 |
| | | - external | |
|-------------------+----------+------------------+----------|
| CPU fan power | C9 | USB connector 2 | CN9 |
| | | - external | |
|-------------------+----------+------------------+----------|
| Wake on LAN | C10 | PS/2 mouse port | CN10 |
| connector | | | |
|-------------------+----------+------------------+----------|
| SCSI interface | C11 | Ultra Wide SCSI | CN11 |
| LED | | interface | |
|-------------------+----------+------------------+----------|
| Control panel 1 | C12 | Floppy drive | CN12 |
| | | interface | |
|-------------------+----------+------------------+----------|
| I2C connector | C13 | Ultra Wide SCSI | CN13 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Control panel 2 | C14 | IDE interface 1 | CN14 |
|-------------------+----------+------------------+----------|
| Speaker | C15 | IDE interface 2 | CN15 |
|-------------------+----------+------------------+----------|
| IR connector | C16 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Wake on modem | C17 | | |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | SW1/1 | Off |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Flash BIOS normal operation | SW1/2 | Off |
|---+---------------------------------+-------+--------------|
| | Flash BIOS recovery mode | SW1/2 | On |
|---+---------------------------------+-------+--------------|
| » | Floppy drive write protect | SW1/3 | Off |
| | disabled | | |
|---+---------------------------------+-------+--------------|
| | Floppy drive write protect | SW1/3 | On |
| | enabled | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | SW1/4 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+-------------+-------------+-------------+---------|
| 8MB | (1) 1M x 64 | None | None | None |
|--------+-------------+-------------+-------------+---------|
| 16MB | (1) 2M x 64 | None | None | None |
|--------+-------------+-------------+-------------+---------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None | None |
|--------+-------------+-------------+-------------+---------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 | None | None |
|--------+-------------+-------------+-------------+---------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 64 | None | None | None |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 2M x 64 | (1) 2M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 1M x 64 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 4M x 64 | (1) 1M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 64 | (1) 2M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 2M x 64 | (1) 2M x | (1) 2M x | None |
| | | 64 | 64 | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 2M x 64 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 64 | None | None | None |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 64 | (1) 4M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 8M x 64 | (1) 1M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 64 | (1) 2M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 64 | (1) 4M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 64 | (1) 4M x | (1) 4M x | None |
| | | 64 | 64 | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 16M x | None | None | None |
| | 64 | | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 64 | (1) 8M x | None | None |
| | | 64 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 4M x 64 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 136MB | (1) 16M x | (1) 1M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 144MB | (1) 16M x | (1) 2M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 152MB | (1) 16M x | (1) 1M x | (1) 1M x | (1) 1M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 160MB | (1) 16M x | (1) 4M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 176MB | (1) 16M x | (1) 2M x | (1) 2M x | (1) 2M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 192MB | (1) 16M x | (1) 8M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 192MB | (1) 8M x 64 | (1) 8M x | (1) 8M x | None |
| | | 64 | 64 | |
|-------+-------------+------------+------------+------------|
| 224MB | (1) 16M x | (1) 4M x | (1) 4M x | (1) 4M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 256MB | (1) 16M x | (1) 16M x | None | None |
| | 64 | 64 | | |
|-------+-------------+------------+------------+------------|
| 256MB | (1) 8M x 64 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 272MB | (1) 16M x | (1) 16M x | (1) 1M x | (1) 1M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 288MB | (1) 16M x | (1) 16M x | (1) 2M x | (1) 2M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 320MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 4M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 320MB | (1) 16M x | (1) 8M x | (1) 8M x | (1) 8M x |
| | 64 | 64 | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 384MB | (1) 16M x | (1) 16M x | (1) 16M x | None |
| | 64 | 64 | 64 | |
|-------+-------------+------------+------------+------------|
| 512MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 64 | 64 | 64 | 64 |
|------------------------------------------------------------|
| Note: Board accepts EDO & SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 512KB cache is located on the Pentium II CPU. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | On | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 266MHz | 66MHz | 4x | On | Off | On | On |
|---------+-----------+----------+------+------+------+------|
| 300MHz | 66MHz | 4.5x | On | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 333MHz | 66MHz | 5x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 366MHz | 66MHz | 5.5x | On | Off | Off | Off |
+------------------------------------------------------------+