
ASUS COMPUTER INTERNATIONAL

PVI-486AP4

Processor  CX486S/80486SX/80487SX/80486SX2/CX486DX/80486DX/ODP486SX/
           CX486DX2/CX486DX2-V/80486DX2/80486DX4/Pentium Overdrive
Processor  25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Intel
Max.       128MB
Onboard
DRAM
Cache      128/256/512KB
BIOS       Award
Dimensions 330mm x 218mm
I/O        32-bit PCI bus slots (4), 32-bit VESA local bus slot, green PC
Options    feature, IDE interface, PS/2 mouse connector
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  PS/2 mouse connector        J1       Speaker                     J7

  IDE interface               J2       Power LED & keylock         J8

  Green PC connector          J3       IDE interface LED          JP40

  Turbo switch                J4       32-bit PCI slots        PC1 - PC4

  Turbo LED                   J5       32-bit VESA Local bus      SL1
                                       slots

  Reset switch                J6

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     Monitor type select monochrome/VGA       JP1           pins 1 & 2
                                                              closed

      Monitor type select CGA                  JP1           pins 2 & 3
                                                              closed

     Flash BIOS voltage select 5 volt         JP12          pins 2 & 3
                                                              closed

      Flash BIOS voltage select 12 volt        JP12          pins 1 & 2
                                                              closed

     Flash BIOS write protect enabled         JP13          pins 1 & 2
                                                              closed

      Flash BIOS write protect disabled        JP13          pins 2 & 3
                                                              closed

     Cache type select write through          JP17            Open

      Cache type select write back             JP17          pins 1 & 2
                                                              closed

     On board mouse enabled                   JP28          pins 2 & 3
                                                              closed

      On board mouse disabled                  JP28          pins 1 & 2
                                                              closed

     IDE controller IRQ select IRQ14          JP29          pins 1 & 2
                                                              closed

      IDE controller IRQ select IRQ15          JP29          pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2         Bank 3

      2MB        (1) 512K x        NONE           NONE           NONE
                     36

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

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

      6MB       (1) 1M x 36        NONE        (1) 512K x        NONE
                                                   36

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

      8MB       (1) 2M x 36        NONE           NONE           NONE

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

     16MB       (1) 4M x 36        NONE           NONE           NONE

     24MB       (1) 4M x 36        NONE       (1) 2M x 36        NONE

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

     32MB       (1) 8M x 36        NONE           NONE           NONE

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

     48MB       (1) 8M x 36        NONE       (1) 4M x 36        NONE

     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

     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

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

     128KB        (4) 32K x 8        NONE         (2) 8K x 8

     256KB        (4) 32K x 8     (4) 32K x 8    (2) 32K x 8

     256KB        (4) 64K x 8        NONE        (2) 32K x 8

     512KB        (4) 64K x 8     (4) 64K x 8    (2) 32K x 8

     512KB       (4) 128K x 8        NONE        (2) 32K x 8

                        CACHE JUMPER CONFIGURATION

         Size                    JP20                      JP21

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

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

         256KB             pins 1 & 2 closed         pins 1 & 2, 3 & 4
                                                          closed

         512KB             pins 2 & 3 closed         pins 2 & 3, 4 & 5
                                                          closed

         512KB             pins 2 & 3 closed         pins 1 & 2, 3 & 4
                                                          closed

                          CPU TYPE CONFIGURATION

            Type                     JP18                    JP19

           CX486S              pins 2 & 3, 4 & 5       pins 1 & 2, 4 & 5
                                    closed                  closed

        AMD486SX/SX2           pins 1 & 2, 4 & 5      pins 4 & 5 closed
                                    closed

        80486SX/SX2            pins 1 & 2, 4 & 5       pins 1 & 2, 4 & 5
                                    closed                  closed

          80487SX              pins 1 & 2, 4 & 5       pins 1 & 2, 3 & 4
                                    closed                  closed

       SL 80486SX/SX2          pins 2 & 3, 4 & 5       pins 1 & 2, 4 & 5
                                    closed                  closed

     CX486DX/DX2/DX2-V         pins 1 & 2, 4 & 5       pins 1 & 2, 3 & 4
                                    closed                  closed

        AMD486DX/DX2           pins 1 & 2, 4 & 5      pins 3 & 4 closed
                                    closed

        80486DX/DX2            pins 1 & 2, 4 & 5       pins 1 & 2, 3 & 4
                                    closed                  closed

       SL 80486DX/DX2          pins 2 & 3, 4 & 5       pins 1 & 2, 3 & 4
                                    closed                  closed

          80486DX4             pins 2 & 3, 4 & 5       pins 1 & 2, 3 & 4
                                    closed                  closed

         Overdrive             pins 1 & 2, 4 & 5       pins 1 & 2, 3 & 4
                                    closed                  closed

        SL Overdrive           pins 2 & 3, 4 & 5       pins 1 & 2, 3 & 4
                                    closed                  closed

     Pentium Overdrive         pins 2 & 3, 5 & 6       pins 1 & 2, 3 & 4
                                    closed                  closed

                   CPU SPEED CONFIGURATION

        Speed                JP25                 JP26

        25MHz          pins 2 & 3 closed   pins 1 & 2 closed

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

       50iMHz          pins 2 & 3 closed   pins 1 & 2 closed

       66iMHz          pins 1 & 2 closed   pins 2 & 3 closed

       75iMHz          pins 2 & 3 closed   pins 1 & 2 closed

       100iMHz         pins 1 & 2 closed   pins 2 & 3 closed

                 CPU CLOCK SPEED CONFIGURATION (80846DX4)

               Speed                                 JP17

                 2x                            pins 4 & 5 closed

                2.5x                           pins 3 & 4 closed

                 3x                                  Open

  Note: The use of JP17 depends on which CPU is installed. The above
  setting is used only if a DX4 is installed. Otherwise, use JP17 setting
  located in the user configurable table.

         BUS SPEED CONFIGURATION

      CPU speed              JP22

       <=33MHz        pins 1 & 2 closed

       > 33MHz        pins 2 & 3 closed

                         CPU VOLTAGE CONFIGURATION

          Voltage                   JP30                    JP31

      3.3 volt (Intel         pins 1 & 2 closed       pins 2 & 3 closed
         80486DX4)

  3.6 volt (Cyrix DX2-V)      pins 2 & 3 closed       pins 1 & 2 closed

      VESA WAIT STATE CONFIGURATION

     Wait states             JP23

    0 wait states     pins 1 & 2 closed

    1 wait state      pins 2 & 3 closed

              PCI INTERRUPT CONFIGURATION (IRQ5)

      PCI slot               JP2                  JP11

       Default         pins 2 & 3 closed   pins 2 & 3 closed

         PC1           pins 1 & 2 closed          N/A

         PC2           pins 3 & 4 closed          N/A

         PC3                 N/A           pins 1 & 2 closed

         PC4                 N/A           pins 3 & 4 closed

              PCI INTERRUPT CONFIGURATION (IRQ9)

      PCI slot               JP3                  JP10

       Default         pins 2 & 3 closed   pins 2 & 3 closed

         PC1           pins 1 & 2 closed          N/A

         PC2           pins 3 & 4 closed          N/A

         PC3                 N/A           pins 1 & 2 closed

         PC4                 N/A           pins 3 & 4 closed

             PCI INTERRUPT CONFIGURATION (IRQ11)

      PCI slot               JP4                  JP9

       Default         pins 2 & 3 closed   pins 2 & 3 closed

         PC1           pins 1 & 2 closed          N/A

         PC2           pins 3 & 4 closed          N/A

         PC3                 N/A           pins 1 & 2 closed

         PC4                 N/A           pins 3 & 4 closed

             PCI INTERRUPT CONFIGURATION (IRQ14)

      PCI slot               JP5                  JP8

       Default         pins 2 & 3 closed   pins 2 & 3 closed

         PC1           pins 1 & 2 closed          N/A

         PC2           pins 3 & 4 closed          N/A

         PC3                 N/A           pins 1 & 2 closed

         PC4                 N/A           pins 3 & 4 closed

             PCI INTERRUPT CONFIGURATION (IRQ15)

      PCI slot               JP6                  JP7

       Default         pins 2 & 3 closed   pins 2 & 3 closed

         PC1           pins 1 & 2 closed          N/A

         PC2           pins 3 & 4 closed          N/A

         PC3                 N/A           pins 1 & 2 closed

         PC4                 N/A           pins 3 & 4 closed

