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