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# NIAGARA SMD TECHNOLOGY, INC.
NT928 S4
Processor Pentium
Processor Speed 75/90/100/120/133/150/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award/Phoenix
Dimensions 330mm x 218mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
green PC connector, IDE interfaces (2), SCSI
connectors (2), parallel port, PS/2 mouse
interface, serial ports (2), VRM connector,
cache slot, IR connector
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|--------------------+----------+-------------------+--------|
| Reset switch | CN4 pins | Wide SCSI-2 | J8 |
| | 1 & 2 | connector | |
|--------------------+----------+-------------------+--------|
| Turbo switch | CN4 pins | Parallel port | J9 |
| | 3 & 4 | | |
|--------------------+----------+-------------------+--------|
| Green PC connector | CN4 pins | Fast SCSI-2 | J10 |
| | 6 & 7 | connector | |
|--------------------+----------+-------------------+--------|
| Turbo LED | CN4 pins | SCSI interface | J11 |
| | 8 & 9 | LED | |
|--------------------+----------+-------------------+--------|
| Speaker | CN4 pins | Serial port | J12 |
| | 11 - 14 | | |
|--------------------+----------+-------------------+--------|
| Power LED & | CN4 pins | Serial port | J13 |
| keylock | 16 - 20 | | |
|--------------------+----------+-------------------+--------|
| IDE interface | CN5 | IDE interface LED | J14 |
|--------------------+----------+-------------------+--------|
| IDE interface | CN6 | VRM connector | J15 |
|--------------------+----------+-------------------+--------|
| Chassis fan power | CN7 | PS/2 mouse | J22 |
| | | interface | |
|--------------------+----------+-------------------+--------|
| IR connector | J6 | 32-bit PCI slots | PC1 - |
| | | | PC3 |
|--------------------+----------+-------------------+--------|
| Floppy drive | J7 | Cache slot | SL1 |
| interface | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|------------------------------------+-------+---------------|
| » | Parallel IOCHRDY enabled | JP5 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | Parallel IOCHRDY disabled | JP5 | Open |
|---+--------------------------------+-------+---------------|
| » | Parallel port IRQ select IRQ7 | JP8 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | Parallel port IRQ select IRQ5 | JP8 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| » | On board I/O enabled | JP9 | Open |
|---+--------------------------------+-------+---------------|
| | On board I/O disabled | JP9 | Closed |
|---+--------------------------------+-------+---------------|
| | SCSI chip enabled | JP10 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | SCSI chip disabled | JP10 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | Flash BIOS voltage select 12v | JP20 | Pins 1 & 2, 5 |
| | | | & 6 closed |
|---+--------------------------------+-------+---------------|
| | Flash BIOS voltage select 5v | JP20 | Pins 2 & 3, 5 |
| | | | & 6 closed |
|---+--------------------------------+-------+---------------|
| | Flash BIOS or EPROM installed | JP20 | Pins 2 & 3, 4 |
| | | | & 5 closed |
|---+--------------------------------+-------+---------------|
| » | Jumper information unavailable | JP25 | N/A |
|---+--------------------------------+-------+---------------|
| » | SCSI type select SCSI - 2 | JP26 | Open |
|---+--------------------------------+-------+---------------|
| | SCSI type select wide SCSI - 2 | JP26 | Closed |
|---+--------------------------------+-------+---------------|
| » | Jumper information unavailable | JP42 | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|--------------+------------------------+--------------------|
| 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 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. The orientation of the |
| banks is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG | SL1 |
|-----------+-----------+-----------+-----------+------------|
| 256KB (A) | (4) 32K x | (4) 32K x | (1) 8K x | Not |
| | 8 | 8 | 8 | installed |
|-----------+-----------+-----------+-----------+------------|
| 256KB (B) | None | None | None | Installed |
|-----------+-----------+-----------+-----------+------------|
| 512KB (A) | (4) 64K x | (4) 64K x | (1) 16K x | Not |
| | 8 | 8 | 8 | installed |
|-----------+-----------+-----------+-----------+------------|
| 512KB (B) | None | None | None | Installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP29 |
|----------------------------+-------------------------------|
| None | Open |
|----------------------------+-------------------------------|
| 256KB (A) | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 512KB (A) | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP34 | JP35 |
|------------------+--------------------+--------------------|
| Asynchronous | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Burst | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Pipeline burst | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP14 |
|----------------------------+-------------------------------|
| 75MHz | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 90MHz | Pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 100MHz | Pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 120MHz | Pins 7 & 8 closed |
|----------------------------+-------------------------------|
| 133MHz | Pins 9 & 10 closed |
|----------------------------+-------------------------------|
| 150MHz | Pins 11 & 12 closed |
|----------------------------+-------------------------------|
| 180MHz | Pins 13 & 14 closed |
|----------------------------+-------------------------------|
| 200MHz | Pins 15 & 16 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP16 |
|----------------------------+-------------------------------|
| P54C/CS/CT | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| P55C/CT | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP43 | JP44 | JP45 |
|----------------+--------------+--------------+-------------|
| | 3.4v | Open | Open | Closed |
|---+------------+--------------+--------------+-------------|
| » | 3.5v | Open | Closed | Open |
|---+------------+--------------+--------------+-------------|
| | 3.6v | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VRM SELECTION |
|------------------------------------------------------------|
| Setting | JP39 | JP40 | JP41 |
|-------------------+-------------+-------------+------------|
| VRM not installed | Closed | Closed | Closed |
|-------------------+-------------+-------------+------------|
| VRM installed | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | JP3 | JP4 |
|------------------+--------------------+--------------------|
| | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----+-------------+--------------------+--------------------|
| » | 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP1 | JP2 | JP6 | JP7 |
|------------+-----------+-----------+-----------+-----------|
| IRQ3 | Pins 1 & | N/A | N/A | N/A |
| (serial | 2 closed | | | |
| port 2) | | | | |
|------------+-----------+-----------+-----------+-----------|
| IRQ4 | N/A | Pins 2 & | N/A | N/A |
| (serial | | 3 closed | | |
| port 1) | | | | |
|------------+-----------+-----------+-----------+-----------|
| IRQ10 | N/A | N/A | Pins 2 & | N/A |
| (serial | | | 3 closed | |
| port 1) | | | | |
|------------+-----------+-----------+-----------+-----------|
| IRQ10 | N/A | N/A | Pins 1 & | N/A |
| (serial | | | 2 closed | |
| port 2) | | | | |
|------------+-----------+-----------+-----------+-----------|
| IRQ11 | N/A | N/A | N/A | Pins 2 & |
| (serial | | | | 3 closed |
| port 1) | | | | |
|------------+-----------+-----------+-----------+-----------|
| IRQ11 | N/A | N/A | N/A | Pins 1 & |
| (serial | | | | 2 closed |
| port 2) | | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP11 | JP12 |
|--------------------+-------------------+-------------------|
| IRQ14 (primary) | Pins 1 & 2 closed | N/A |
|--------------------+-------------------+-------------------|
| IRQ15 (secondary) | N/A | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TERMINATION SELECTION |
|------------------------------------------------------------|
| Setting | JP13 |
|-------------------------------+----------------------------|
| Terminator always on | Pins 1 & 2 closed |
|-------------------------------+----------------------------|
| Terminator always off | Open |
|-------------------------------+----------------------------|
| Terminator controlled by BIOS | Pins 2 & 3 closed |
+------------------------------------------------------------+