
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 Memory None
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

[Image]

                                CONNECTIONS

        Function            Label            Function            Label

  Reset switch            CN4 pins 1   Wide SCSI-2 connector       J8
                             & 2

  Turbo switch            CN4 pins 3   Parallel port               J9
                             & 4

  Green PC connector      CN4 pins 6   Fast SCSI-2 connector      J10
                             & 7

  Turbo LED               CN4 pins 8   SCSI interface LED         J11
                             & 9

  Speaker                CN4 pins 11   Serial port                J12
                            - 14

  Power LED & keylock    CN4 pins 16   Serial port                J13
                            - 20

  IDE interface              CN5       IDE interface LED          J14

  IDE interface              CN6       VRM connector              J15

  Chassis fan power          CN7       PS/2 mouse interface       J22

  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 (CONT)

          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 8   (4) 32K x 8   (1) 8K x 8    Not installed

   256KB (B)        None          None          None         Installed

   512KB (A)     (4) 64K x 8   (4) 64K x 8   (1) 16K x 8   Not 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 (serial    Pins 1 & 2       N/A            N/A           N/A
     port 2)        closed

   IRQ4 (serial       N/A        Pins 2 & 3        N/A           N/A
     port 1)                       closed

  IRQ10 (serial       N/A           N/A         Pins 2 & 3       N/A
     port 1)                                     closed

  IRQ10 (serial       N/A           N/A         Pins 1 & 2       N/A
     port 2)                                     closed

  IRQ11 (serial       N/A           N/A            N/A        Pins 2 & 3
     port 1)                                                    closed

  IRQ11 (serial       N/A           N/A            N/A        Pins 1 & 2
     port 2)                                                    closed

                    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

