
FIRST INTERNATIONAL COMPUTER, INC.

486-POS

Device     Mainboard
Type
Processor  80486SX/U5S/U5SD/U5SLV/CX 486DX/80486DX/CX 486DX2/
           AM486DX2/80486DX2/CX 486DX4/TI486DX4/AM486DX4/80486DX4/
           P24D/P24S/P24T/CX 5X85/CX M1SC/AM X5
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed
           100(internal)/120(internal)/133(internal)MHz
Chip Set   VIA
Video Chip Unidentified
Set
Maximum    64MB
Onboard
Memory
Maximum    1MB
Video
Memory
Cache      None
BIOS       Unidentified
Dimensions 254mm x 218mm
I/O        Ethernet BNC connector, Ethernet RJ-45 connector, floppy drive
Options    interface, IDE interface, parallel port, PS/2 mouse port, serial
           port, VGA interface
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Power LED & keylock         C1       VGA interface               CN5

  Reset switch                C2       IDE interface               CN6

  Ethernet BNC connector      CN1      Floppy drive interface      CN7

  Ethernet RJ-45              CN2      Parallel port               CN8
  connector

  PS/2 mouse port             CN3      Keyboard connector          CN9

  Serial port 1               CN4

                        USER CONFIGURABLE SETTINGS

                Function                     Label          Position

     CMOS memory normal operation           CMOS            Closed

      CMOS memory clear                      CMOS             Open

     On board LAN enabled                    JL1       Pins 1 & 2 closed

      On board LAN disabled                   JL1       Pins 2 & 3 closed

      On board chipset select CG version      JP1       Pins 2 & 3 closed

      On board chipset select all others      JP1       Pins 1 & 2 closed

     On board video enabled                  JV1       Pins 2 & 3 closed

      On board video disabled                 JV1       Pins 1 & 2 closed

     Factory configured - do not alter       JV2         Unidentified

     Monitor type select                     VID             Open
      monochrome/EGA/VGA

      Monitor type select color               VID            Closed

             SIMM CONFIGURATION

     Size          Bank 0        Bank 1

      4MB        (1) 1M x 36      None

      8MB        (1) 2M x 36      None

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

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

     16MB        (1) 4M x 36      None

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

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

     24MB        (1) 2M x 36   (1) 4M x 36

     32MB        (1) 8M x 36      None

     32MB        (1) 4M x 36   (1) 4M x 36

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

     40MB        (1) 2M x 36   (1) 8M x 36

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

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

            VIDEO MEMORY CONFIGURATION

      Size            Bank 0           Bank 1

      512KB       (1) 256K x 16         None

       1MB        (1) 256K x 16    (1) 256K x 16

                            CPU TYPE SELECTION

        Type                JC1               JC2               JC3

       80486SX           Pins 2 & 3        Pins 2 & 3           Open
                           closed            closed

         U5S             Pins 2 & 3        Pins 2 & 3           Open
                           closed            closed

        U5SD             Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

        U5SLV            Pins 2 & 3        Pins 2 & 3           Open
                           closed            closed

      CX 486DX           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

       80486DX           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

      CX 486DX2          Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

     AM486DX2-80         Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

      AM486DX2           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

      80486DX2           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

      CX 486DX4          Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

      TI486DX4           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

      AM486DX4           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

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

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

      80486DX4           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

        P24D             Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

        P24S             Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

        P24T             Pins 1 & 2        Pins 1 & 2          Closed
                           closed            closed

       CX 5X85           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

       CX M1SC           Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

        AM X5            Pins 1 & 2        Pins 1 & 2           Open
                           closed            closed

                        CPU TYPE SELECTION (CON'T)

       Type                RNA               RNC               RN1

      80486SX         Not installed     Not installed       Pins 1 - 8
                                                              closed

        U5S             Pins 1 - 8      Not installed     Not installed
                         closed

       U5SD             Pins 1 - 8      Not installed     Not installed
                         closed

       U5SLV            Pins 1 - 8      Not installed     Not installed
                         closed

     CX 486DX         Not installed       Pins 1 - 8      Not installed
                                           closed

      80486DX         Not installed     Not installed       Pins 1 - 8
                                                              closed

     CX 486DX2        Not installed       Pins 1 - 8      Not installed
                                           closed

    AM486DX2-80       Not installed           *                 *

     AM486DX2           Installed       Not installed     Not installed

     80486DX2         Not installed     Not installed       Pins 1 - 8
                                                              closed

     CX 486DX4        Not installed     Not installed       Pins 1 - 8
                                                              closed

     TI486DX4         Not installed     Not installed       Pins 1 - 8
                                                              closed

     AM486DX4           Installed       Not installed     Not installed

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

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

     80486DX4         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

      CX 5X85         Not installed     Not installed       Pins 1 - 8
                                                              closed

      CX M1SC         Not installed     Not installed       Pins 2 - 10
                                                              closed

       AM X5          Not installed           *                 *

  Note: * = Connect pin 2 on RN1 to pin 5 on RNC

                            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 2 & 3     Pins 1 & 2     Pins 2 & 3     Pins 2 & 3
                   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

    120iMHz      Pins 1 & 2     Pins 1 & 2     Pins 2 & 3     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 LOW VOLTAGE SELECTION

       Voltage               JVC1                JVC2

        3.3v           Pins 1 & 2 closed         Open

        3.45v          Pins 2 & 3 closed         Open

        3.59v                Open          Pins 1 & 2 closed

         4v                  Open          Pins 2 & 3 closed

                 CPU VOLTAGE SELECTION

          Voltage                      CN3V

            3.3v                       Open

           3.46v                       Open

           3.59v                       Open

             4v                        Open

             5v              Pins 1 & 2, 3 & 4 closed

                    DMA CHANNEL SELECTION

       Channel               ECP1                ECP2

          1           Pins 1 & 2 closed   Pins 1 & 2 closed

          3            Pins 2 & 3 closed   Pins 2 & 3 closed

