
SOYO COMPUTER CO., LTD.

PENTIUM (P54C) PCI MAINBOARD

Processor         Pentium
Processor Speed   90/100MHz
Chip Set          Unidentified
Max. Onboard DRAM 512MB
Cache             256/512KB
BIOS              Award
Dimensions        330mm x 218mm
I/O Options       32-bit PCI bus slots (4), green PC connector
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  Power LED & keylock       J17       Green PC connector          J21

  Speaker                   J18       Green PC LED                J22

  Reset switch              J19       32-bit PCI bus slots      SL1 - SL4

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Ppeline address disabled                J24              Open

      Pipeline address enabled                J24             Closed

     Cache type select write back            J29              Open

      Cache type select write through         J29             Closed

     Monitor type select color               JP3             Closed

      Monitor type select monochrome          JP3              Open

     CMOS memory normal operation            JP5              Open

      CMOS memory clear                       JP5             Closed

     Factory configured - do not             JP36            Closed
      alter

     Factory configured - do not             JP37            Closed
      alter

     Factory configured - do not             JP38            Closed
      alter

     Factory configured - do not             JP39             Open
      alter

     Factory configured - do not             JP40             Open
      alter

     Factory configured - do not             JP41             Open
      alter

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         NONE

       4MB        (2) 256K x 36    (2) 256K x 36

       4MB        (2) 512K x 36         NONE

       8MB        (2) 512K x 36    (2) 512K x 36

       8MB         (2) 1M x 36          NONE

      10MB        (2) 256K x 36     (2) 1M x 36

      12MB        (2) 512K x 36     (2) 1M x 36

      16MB         (2) 2M x 36          NONE

      16MB         (2) 1M x 36      (2) 1M x 36

      20MB        (2) 512K x 36     (2) 2M 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

      48MB         (2) 2M x 36      (2) 4M x 36

      64MB         (2) 8M x 36          NONE

      64MB         (2) 4M x 36      (2) 4M x 36

      68MB        (2) 512K x 36     (2) 8M x 36

      80MB         (2) 2M x 36      (2) 8M x 36

      96MB         (2) 4M x 36      (2) 8M x 36

      128MB        (2) 8M x 36      (2) 8M x 36

      128MB        (2) 16M x 36         NONE

      256MB        (2) 16M x 36     (2) 16M x 36

      256MB        (2) 32M x 36         NONE

      512MB        (2) 32M x 36     (2) 32M x 36

            CACHE CONFIGURATION

     Size          Bank 0        Bank 1

     256KB       (4) 32K x 8   (4) 32K x 8

     512KB       (4) 64K x 8   (4) 64K x 8

                  CACHE JUMPER CONFIGURATION

        Size                 J25                  J26

        256KB          pins 2 & 3 closed   pins 1 & 2 closed

        512KB          pins 2 & 3 closed   pins 2 & 3 closed

         CPU SPEED CONFIGURATION

  Speed      JP31      JP34      JP35

  90MHz     Closed     Open      Open

  100MHz     Open     Closed    Closed

                PCI IRQ CONFIGURATION (IRQ 10)

        PIRQ                 J44                  J51

       PIRQ 0                Open          pins 1 & 2 closed

       PIRQ 1                Open          pins 2 & 3 closed

       PIRQ 2          pins 1 & 2 closed          Open

       PIRQ 3          pins 2 & 3 closed          Open

                PCI IRQ CONFIGURATION (IRQ 11)

        PIRQ                 J45                  J52

       PIRQ 0                Open          pins 1 & 2 closed

       PIRQ 1                Open          pins 2 & 3 closed

       PIRQ 2          pins 1 & 2 closed          Open

       PIRQ 3          pins 2 & 3 closed          Open

                PCI IRQ CONFIGURATION (IRQ 12)

        PIRQ                 J46                  J53

       PIRQ 0                Open          pins 1 & 2 closed

       PIRQ 1                Open          pins 2 & 3 closed

       PIRQ 2          pins 1 & 2 closed          Open

       PIRQ 3          pins 2 & 3 closed          Open

                PCI IRQ CONFIGURATION (IRQ 14)

        PIRQ                 J47                  J54

       PIRQ 0                Open          pins 1 & 2 closed

       PIRQ 1                Open          pins 2 & 3 closed

       PIRQ 2          pins 1 & 2 closed          Open

       PIRQ 3          pins 2 & 3 closed          Open

                PCI IRQ CONFIGURATION (IRQ 15)

        PIRQ                 J48                  J55

       PIRQ 0                Open          pins 1 & 2 closed

       PIRQ 1                Open          pins 2 & 3 closed

       PIRQ 2          pins 1 & 2 closed          Open

       PIRQ 3          pins 2 & 3 closed          Open

     HOST BUS PREQUENCY CONFIGURATION

       Setting               J30

     Full speed              Open

      2/3 speed       pins 1 & 2 closed

      1/2 speed       pins 2 & 3 closed

