
ASUS COMPUTER INTERNATIONAL

PCI/I-486SP3

Processor     80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive
Processor     25/33/50(internal)/66(internal)MHz
Speed
Chip Set      Intel
Max. Onboard  128MB
DRAM
Cache         128/256/512KB
BIOS          Award
Dimensions    330mm x 218mm
I/O Options   32-bit PCI local bus slots (3), floppy drive interface, IDE
              interface, parallel port, SCSI interface, serial ports (2)
NPU Options   None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock        CON1      IDE interface LED           J22

  Speaker                    CON2      32-bit PCI bus slot        PCI1

  Turbo LED                  CON3      32-bit PCI bus slot        PCI2

  Reset switch               CON4      32-bit PCI bus slot        PCI3

  Turbo switch               CON5      Serial port 1               S1

  Floppy drive interface      FDD      Serial port 2               S2

  IDE interface               IDE      Parallel port               S3

  SCSI interface LED          J7       SCSI interface             SCSI

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     BIOS ROM select (2) 27512                J6           pins 2 & 3
                                                              closed

      BIOS ROM select (1) 271000               J6           pins 1 & 2
                                                              closed

     IDE I/O Channel Ready disabled          J16              Open

      IDE I/O Channel Ready enabled           J16             Closed

     Factory configured - do not             J23             Closed
      alter

     Factory configured - do not             J24             Closed
      alter

     Secondary cache speed 0 wait            J33           pins 1 & 2
      states                                                  closed

      Secondary cache speed 1 wait            J33           pins 2 & 3
      state                                                   closed

     Factory configured - do not             J34           pins 2 & 3
      alter                                                   closed

     Factory configured - do not             J35           pins 1 & 2
      alter                                                   closed

     Secondary cache enabled                 J36           pins 1 & 2
                                                              closed

      Secondary cache disabled                J36           pins 2 & 3
                                                              closed

     Factory configured - do not             J47           pins 2 & 3
      alter                                                   closed

     BIOS type select EPROM                  J48           pins 2 & 3
                                                              closed

      BIOS type select Flash BIOS             J48           pins 1 & 2
                                                              closed

     Onboard SCSI interface enabled          J51              Open

      Onboard SCSI interface disabled         J51             Closed

     Floppy, IDE, Parallel, and              JSMC          pins 1 & 2
      Serial ports enabled                                    closed

      Floppy, IDE, Parallel, and              JSMC          pins 2 & 3
      Serial ports disabled                                   closed

                   ONBOARD SCSI INTERFACE CONFIGURATION

       Onboard SCSI                 J17                     J18

  Present (PCI2 is slave)           Open                    Open

  Absent (PCI2 is master)          Closed                  Closed

       INTERRUPT IRQ5 CONFIGURATION

         Bus                  J3

         ISA          pins 1 & 2 closed

     PCI (INT A)      pins 2 & 3 closed

                INTERRUPT IRQ9 CONFIGURATION

          Bus/Device                     J1 & J2

             ISA               J1/pin 1 & J2/pin 1 closed

         PCI (INT D)           J1/pin 3 & J2/pin 3 closed

             SCSI              J1/pin 2 & J2/pin 2 closed

                       INTERRUPT IRQ11 CONFIGURATION

                Bus                                   J4

                ISA                           pins 1 & 2 closed

            PCI (INT B)                       pins 2 & 3 closed

  Note: The PCI bus can have only one IRQ on INT B (i.e. you can use
  IRQ11 or IRQ14 but not both).

                       INTERRUPT IRQ14 CONFIGURATION

          Bus                      J49                      J50

          ISA               pins 2 & 3 closed               open

      PCI (INT A)           pins 1 & 2 closed               open

      PCI (INT B)                 open                     closed

  Note: The PCI bus can have only one IRQ on INT B (i.e. you can use
  IRQ11 or IRQ14 but not both). The PCI bus can have only one IRQ on INT
  A (i.e. you can use IRQ5 or IRQ14 but not both). The PCI bus can have
  only one IRQ on INT B (i.e. you can use IRQ11 or IRQ14 but not both).

      INTERRUPT IRQ15 CONFIGURATION

         Bus                  J5

         ISA          pins 1 & 2 closed

     PCI (INT C)      pins 2 & 3 closed

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

     128KB        (4) 32K x 8        NONE         (1) 8K x 8

     256KB        (4) 32K x 8     (4) 32K x 8    (1) 32K x 8

     512KB       (4) 128K x 8        NONE        (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

    Size           J25            J26            J37             J38

    128KB       pins 2 & 3     pins 2 & 3     pins 1 & 2      pins 2 & 3
                 closed          closed         closed         closed

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

    512KB       pins 1 & 2     pins 1 & 2     pins 1 & 2      pins 1 & 2
                 closed          closed         closed         closed

  Note:Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

       CPU          Socket       CP1        CP2       CP3         J43

     80486SX          PGA      pins 2 &    pins 1     Open       Closed
                                  3         & 2

     80486SX         PQFP        1 & 2     pins 2    pins 2      Closed
                                and 3 &     & 3       & 3
                                  4

     80487SX          PGA        1 & 2     pins 2    pins 2      Closed
                                and 3 &     & 3       & 3
                                  4

     80486DX          PGA        1 & 2     pins 1    pins 1      Closed
                                and 3 &     & 2       & 2
                                  4

    ODP486SX          PGA        1 & 2     pins 2    pins 2      Closed
                                and 3 &     & 3       & 3
                                  4

    80486DX2          PGA        1 & 2     pins 1    pins 1      Closed
                                and 3 &     & 2       & 2
                                  4

     Pentium          PGA        1 & 2     pins 2    pins 2       Open
    Overdrive                   and 3 &     & 3       & 3
                                  4

  Note:Pins designated should be in the closed position.

                          CPU SPEED CONFIGURATION

      Speed              CS1               J31                 J32

      25MHz           pins 2 & 3        pins 2 & 3      pins 2 & 3 closed
                       closed             closed

      33MHz           pins 1 & 2        pins 1 & 2      pins 2 & 3 closed
                       closed             closed

     50i MHz          pins 2 & 3        pins 2 & 3      pins 2 & 3 closed
                       closed             closed

     66i MHz          pins 1 & 2        pins 1 & 2      pins 2 & 3 closed
                       closed             closed

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2          Bank 3

      2MB        (1) 256K x     (1) 256K x       NONE            NONE
                     36             36

      4MB        (1) 256K x     (1) 256K x     (1) 256K x     (1) 256K x
                     36             36            36              36

      4MB        (1) 512K x     (1) 512K x       NONE            NONE
                     36             36

      6MB        (1) 256K x     (1) 256K x     (1) 512K x     (1) 512K x
                     36             36            36              36

      6MB        (1) 512K x     (1) 512K x     (1) 256K x     (1) 256K x
                     36             36            36              36

      8MB        (1) 512K x     (1) 512K x     (1) 512K x     (1) 512K x
                     36             36            36              36

      8MB       (1) 1M x 36    (1) 1M x 36       NONE            NONE

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

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

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

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

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

     16MB       (1) 2M x 36    (1) 2M x 36       NONE            NONE

     18MB        (1) 256K x     (1) 256K x    (1) 2M x 36    (1) 2M x 36
                     36             36

     18MB       (1) 2M x 36    (1) 2M x 36     (1) 256K x     (1) 256K x
                                                  36              36

     20MB        (1) 512K x     (1) 512K x    (1) 2M x 36    (1) 2M x 36
                     36             36

     20MB       (1) 2M x 36    (1) 2M x 36     (1) 512K x     (1) 512K x
                                                  36              36

     24MB       (1) 1M x 36    (1) 1M x 36    (1) 2M x 36    (1) 2M x 36

     24MB       (1) 2M x 36    (1) 2M x 36    (1) 1M x 36    (1) 1M x 36

     32MB       (1) 2M x 36    (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

     32MB       (1) 4M x 36    (1) 4M x 36       NONE            NONE

     34MB        (1) 256K x     (1) 256K x    (1) 4M x 36    (1) 4M x 36
                     36             36

     34MB       (1) 4M x 36    (1) 4M x 36     (1) 256K x     (1) 256K x
                                                  36              36

     36MB        (1) 512K x     (1) 512K x    (1) 4M x 36    (1) 4M x 36
                     36             36

     36MB       (1) 4M x 36    (1) 4M x 36     (1) 512K x     (1) 512K x
                                                  36              36

     40MB       (1) 1M x 36    (1) 1M x 36    (1) 4M x 36    (1) 4M x 36

     40MB       (1) 4M x 36    (1) 4M x 36    (1) 1M x 36    (1) 1M x 36

     48MB       (1) 2M x 36    (1) 2M x 36    (1) 4M x 36    (1) 4M x 36

     48MB       (1) 4M x 36    (1) 4M x 36    (1) 2M x 36    (1) 2M x 36

     64MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     64MB       (1) 8M x 36    (1) 8M x 36       NONE            NONE

     66MB        (1) 256K x     (1) 256K x    (1) 8M x 36    (1) 8M x 36
                     36             36

     66MB       (1) 8M x 36    (1) 8M x 36     (1) 256K x     (1) 256K x
                                                  36              36

     68MB        (1) 512K x     (1) 512K x    (1) 8M x 36    (1) 8M x 36
                     36             36

     68MB       (1) 8M x 36    (1) 8M x 36     (1) 512K x     (1) 512K x
                                                  36              36

     72MB       (1) 1M x 36    (1) 1M x 36    (1) 8M x 36    (1) 8M x 36

     72MB       (1) 8M x 36    (1) 8M x 36    (1) 1M x 36    (1) 1M x 36

     80MB       (1) 2M x 36    (1) 2M x 36    (1) 8M x 36    (1) 8M x 36

     80MB       (1) 8M x 36    (1) 8M x 36    (1) 2M x 36    (1) 2M x 36

     96MB       (1) 4M x 36    (1) 4M x 36    (1) 8M x 36    (1) 8M x 36

     96MB       (1) 8M x 36    (1) 8M x 36    (1) 4M x 36    (1) 4M x 36

     128MB      (1) 8M x 36    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

