
FIRST INTERNATIONAL COMPUTER, INC.

486-PIO-3 (REV. A1)

Processor  80486SX/UMCU5SD/CX486DX/80486DX/UMCU5S/UMCU5SLV/
           CX486DX2/TI486DX2/AM486DX2/(SL)AM486DX2/ 80486DX2/

           80486DX4ODP/CX486DX4/TI486DX4/AM486DX4/(SL)AM486DX4/
           80486DX4/AMK5/P24D/P24S/P24T/CX5X86
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed      100(internal)/133(internal)MHz
Chip Set   VIA
Video Chip None
Set
Maximum    64MB
Onboard
Memory
Maximum    None
Video
Memory
Cache      128/256/512/1024KB
BIOS       Award
Dimensions 254mm x 218mm
I/O        32-bit PCI slots (3), floppy drive interface, green PC
Options    connector, IDE interfaces (2), parallel port, serial ports (2),
           IR connector
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            BAT       Serial port 1             CN1

  Chassis fan power           C1        Serial port 2             CN2

  Green PC connector          C3        Parallel port             CN3

  Outlet connector            C4        Floppy drive              CN4
                                        interface

  Turbo/green PC LED          C5        IDE interface 2           CN5

  IDE interface LED           C6        IDE interface 1           CN6

  Reset switch                C7        IR connector               IR

  Power LED & keylock         C8        32-bit PCI slots        PC1 - PC3

  Speaker                     C9

                        USER CONFIGURABLE SETTINGS

                Function                     Label          Position

      Flash BIOS type select Intel            J1        Pins 1 & 2 closed
      28F00BX-T1

      Flash BIOS type select SST 29EE010      J1        Pins 2 & 3 closed

     KB_LOCK mode select KB_LOCK             J2        Pins 2 & 3 closed

      KB_LOCK mode select IOCHCK              J2        Pins 1 & 2 closed

     Turbo LED used as turbo LED             J3              Open

      Turbo LED used as green PC LED          J3             Closed

     Password normal operation               JCP             Open

      Password clear                          JCP            Closed

     Parallel port bidirectional             JI1             Open

      Parallel port unidirectional            JI1            Closed

      Jumper information unavailable          JP1         Unidentified

      Jumper information unavailable          JP2         Unidentified

      Monitor type select                    VIDEO           Closed
      monochrome/EGA/VGA

      Monitor type select CGA                VIDEO            Open

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (1) 256K x 36         None

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

       4MB         (1) 1M x 36          None

       5MB         (1) 1M x 36     (1) 256K x 36

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

      16MB         (1) 4M x 36          None

      17MB         (1) 4M x 36     (1) 256K x 36

      20MB         (1) 4M x 36      (1) 1M x 36

      32MB         (1) 8M x 36          None

      33MB         (1) 8M x 36     (1) 256K x 36

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

      48MB         (1) 8M x 36      (1) 4M x 36

      64MB         (1) 8M x 36      (1) 8M x 36

                            CACHE CONFIGURATION

       Size             Bank 0            Bank 1               TAG

       128KB          (4) 32K x 8          None          (1) 8K/32K x 8

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

     256KB (B)        (4) 64K x 8          None            (1) 32K x 8

     512KB (A)       (4) 128K x 8          None            (1) 32K x 8

     512KB (B)        (4) 64K x 8       (4) 64K x 8      (1) 32K/64K x 8

        1MB          (4) 128K x 8      (4) 128K x 8     (1) 64K/128K x 8

                        CACHE JUMPER CONFIGURATION

    Size       JS1        JS2       JS3       JS4       JS5        JS6

   128KB      1 & 2      1 & 2     1 & 2     1 & 2     1 & 2      1 & 2

  256KB (A)   2 & 3      2 & 3     1 & 2     1 & 2     1 & 2      1 & 2

  256KB (B)   2 & 3      2 & 3     1 & 2     1 & 2     1 & 2      1 & 2

  512KB (A)   2 & 3      2 & 3     2 & 3     1 & 2     2 & 3      1 & 2

  512KB (B)   2 & 3      2 & 3     2 & 3     1 & 2     2 & 3      1 & 2

    1MB       2 & 3      2 & 3     2 & 3     2 & 3     2 & 3      2 & 3

  Note: Pins designated should be in the closed position.

                            CPU SPEED SELECTION

     Speed          JK1            JK2            JK3            JK4

     25MHz       Pins 2 & 3     Pins 1 & 2     Pins 2 & 3     Pins 1 & 2
                   closed         closed        closed          closed

     33MHz       Pins 2 & 3     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

     40MHz       Pins 1 & 2     Pins 1 & 2     Pins 2 & 3     Pins 1 & 2
                   closed         closed        closed          closed

    50iMHz       Pins 2 & 3     Pins 1 & 2     Pins 2 & 3     Pins 1 & 2
                   closed         closed        closed          closed

     50MHz       Pins 1 & 2     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

    66iMHz       Pins 2 & 3     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

    75iMHz       Pins 2 & 3     Pins 1 & 2     Pins 2 & 3     Pins 1 & 2
                   closed         closed        closed          closed

    80iMHz       Pins 1 & 2     Pins 1 & 2     Pins 2 & 3     Pins 1 & 2
                   closed         closed        closed          closed

    100iMHz      Pins 2 & 3     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

    133iMHz      Pins 2 & 3     Pins 2 & 3     Pins 1 & 2     Pins 1 & 2
                   closed         closed        closed          closed

                            CPU TYPE SELECTION

      Type          JC1       JC2         JC3         JC4         JC5

     80486SX       2 & 3     2 & 3        Open        Open        Open

    UMC U5SD       1 & 2     1 & 2        Open        Open        Open

     CX486DX       1 & 2     1 & 2        Open        Open        Open

     80486DX       1 & 2     1 & 2        Open       2 & 3        Open

       U5S         2 & 3     2 & 3        Open        Open        Open

      U5SLV        2 & 3     2 & 3        Open        Open        Open

    CX486DX2       1 & 2     1 & 2        Open        Open        Open

    TI486DX2       1 & 2     1 & 2        Open        Open        Open

    AM486DX2       1 & 2     1 & 2       Closed       Open        Open

  (SL)AM486DX2     1 & 2     1 & 2        Open       2 & 3        Open

    80486DX2       1 & 2     1 & 2        Open       2 & 3        Open

    CX486DX4       1 & 2     1 & 2        Open       1 & 2        Open

    TI486DX4       1 & 2     1 & 2        Open        Open        Open

    AM486DX4       1 & 2     1 & 2        Open        Open        Open

  (SL)AM486DX4     1 & 2     1 & 2        Open       1 & 2        Open

   80486DX4ODP     1 & 2     1 & 2        Open       1 & 2        Open

  80486DX4 (2x)    1 & 2     1 & 2        Open       2 & 3        Open

  80486DX4 (3x)    1 & 2     1 & 2        Open       1 & 2        Open

      AM X5        1 & 2     1 & 2        Open       2 & 3        Open

      P24D         1 & 2     1 & 2        Open       1 & 2        Open

      P24S         1 & 2     1 & 2        Open       2 & 3        Open

      P24T         1 & 2     1 & 2        Open       1 & 2       Closed

     CX5X86        1 & 2     1 & 2        Open       1 & 2        Open

  Note: Pins designated should be in the closed position.

                            CPU TYPE SELECTION

        Type               RNA               RNC                RNI

      80486SX         Not installed     Not installed        Pins 1 - 8
                                                              closed

      UMC U5SD          Installed       Not installed      Not installed

      CX486DX         Not installed       Installed        Not installed

      80486DX         Not installed     Not installed        Pins 1 - 8
                                                              closed

        U5S             Installed       Not installed      Not installed

       U5SLV            Installed       Not installed      Not installed

      CX486DX2        Not installed       Installed        Not installed

      TI486DX2        Not installed       Installed        Not installed

      AM486DX2          Installed       Not installed      Not installed

    (SL)AM486DX2      Not installed     Not installed        Pins 1 - 8
                                                              closed

      80486DX2        Not installed     Not installed        Pins 1 - 8
                                                              closed

      CX486DX4        Not installed     Not installed        Pins 1 - 8
                                                              closed

      TI486DX4        Not installed       Installed        Not installed

      AM486DX4          Installed       Not installed      Not installed

    (SL)AM486DX4      Not installed     Not installed        Pins 1 - 8
                                                              closed

    80486DX4ODP       Not installed     Not installed        Pins 1 - 8
                                                              closed

   80486DX4 (2x)      Not installed     Not installed        Pins 1 - 8
                                                              closed

   80486DX4 (3x)      Not installed     Not installed        Pins 1 - 8
                                                              closed

       AM X5          Not installed     Not installed        Pins 1 - 8
                                                              closed

        P24D          Not installed     Not installed        Pins 1 - 8
                                                              closed

        P24S          Not installed     Not installed        Pins 1 - 8
                                                              closed

        P24T          Not installed     Not installed        Pins 1 - 8
                                                              closed

       CX5X86         Not installed     Not installed        Pins 1 - 8
                                                              closed

                           CPU VOLTAGE SELECTION

     Voltage              C2               JPW1               JPW2

      3.3v               Open            Pins 1 & 2           Open
                                          closed

      3.45v              Open            Pins 2 & 3           Open
                                          closed

      3.6v               Open              Open             Pins 1 & 2
                                                             closed

       4v                Open              Open             Pins 2 & 3
                                                             closed

       5v           Pins 1 & 2, 3 &         N/A                N/A
                       4 closed

                          PCI BUS SPEED SELECTION

           CPU Clock                    JCK                   JT1

       <= 33MHz (PCI clock =    Pins 1 & 2 closed     Pins 1 & 2 closed
             CPU clock)

        >33 MHz (PCI clock =     Pins 2 & 3 closed     Pins 2 & 3 closed
            CPU clock/2)

                           DMA CHANNEL SELECTION

         Channel                   JW3                      JW4

             1             Pins 1 & 2 closed        Pins 1 & 2 closed

              3             Pins 2 & 3 closed        Pins 2 & 3 closed

                         SERIAL PORT 2 SELECTION

         Setting                   JW1                      JW2

  Used as Serial port 2     Pins 1 & 2 closed        Pins 1 & 2 closed

  Used as IR connector      Pins 2 & 3 closed        Pins 2 & 3 closed

