
FIRST INTERNATIONAL COMPUTER, INC.

486-GT

Processor    CX486S/CX487S/80486SL/80486SX/CX486DX/80486DX/ODP486SX/
             80486DX2/Pentium Overdrive
Processor    25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set     VIA
Max. Onboard 96MB
DRAM
Cache        64/128/256KB
BIOS         Award
Dimensions   330mm x 218mm
I/O Options  None
NPU Options  None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                Location

  External battery            J1        Reset switch              J8

  Turbo switch                J2        Speaker                   J9

  Green Power supply          J3        Power LED & keylock       J10
  connector

  Turbo LED                   J6

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     Monitor type select monochrome,           J4             Open
      EGA or VGA

      Monitor type select color                 J4            Closed

     Adaptec ISA master installed              J5            Closed

      Adaptec ISA master not installed          J5             Open

     CMOS memory normal operation              J7             Open

      CMOS memory clear                         J7            Closed

     Cyrix clock 2 x mode                     JC8           pins 1 & 2
                                                              closed

      Cyrix clock 1 x mode                     JC8           pins 2 & 3
                                                              closed

     Factory configured - do not alter        JP1           pins 1 & 2
                                                              closed

     Factory configured - do not alter        JP3           pins 1 & 2
                                                              closed

     Pentium Overdrive write-back CPU         JT1           pins 1 & 2
      installed                                               closed

      Pentium Overdrive write-through          JT1           pins 2 & 3
      CPU installed                                           closed

     Factory configured - do not alter        JX1           pins 1 & 2
                                                              closed

                      DRAM CONFIGURATION

      Size          Bank 0          Bank 1          Bank 2

      1MB        (4) 256K x 9        NONE            NONE

      1MB            NONE         (1) 1M x 36        NONE

      1MB            NONE            NONE        (1) 1M x 36

      2MB        (4) 256K x 9     (1) 1M x 36        NONE

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

      2MB        (4) 256K x 9        NONE        (1) 1M x 36

      3MB        (4) 256K x 9     (1) 1M x 36    (1) 1M x 36

      4MB         (4) 1M x 9         NONE            NONE

      4MB            NONE         (1) 4M x 36        NONE

      4MB            NONE            NONE        (1) 4M x 36

      5MB        (4) 256K x 9     (1) 4M x 36        NONE

      5MB        (4) 256K x 9        NONE        (1) 4M x 36

      5MB         (4) 1M x 9      (1) 1M x 36        NONE

      5MB         (1) 1M x 9         NONE        (1) 1M x 36

      5MB            NONE         (1) 1M x 36    (1) 4M x 36

      5MB            NONE         (1) 4M x 36    (1) 1M x 36

      6MB        (4) 256K x 9     (1) 4M x 36    (1) 1M x 36

      6MB        (4) 256K x 9     (1) 1M x 36    (1) 4M x 36

      6MB         (1) 1M x 9      (1) 1M x 36    (1) 1M x 36

      8MB         (1) 1M x 9      (1) 4M x 36        NONE

      8MB         (1) 1M x 9         NONE        (1) 4M x 36

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

      9MB        (4) 256K x 9     (1) 4M x 36    (1) 4M x 36

      9MB         (1) 1M x 9      (1) 1M x 36    (1) 4M x 36

      9MB         (1) 1M x 9      (1) 4M x 36    (1) 1M x 36

      12MB        (1) 1M x 9      (1) 4M x 36    (1) 4M x 36

      16MB        (1) 4M x 9         NONE            NONE

      16MB           NONE        (1) 16M x 36        NONE

      16MB           NONE            NONE        (1) 16M x 36

                  DRAM CONFIGURATION (CONT.)

      Size          Bank 0          Bank 1          Bank 2

      17MB       (4) 256K x 9    (1) 16M x 36        NONE

      17MB       (4) 256K x 9        NONE        (1) 16M x 36

      17MB           NONE         (1) 1M x 36    (1) 16M x 36

      17MB           NONE        (1) 16M x 36    (1) 1M x 36

      17MB        (1) 4M x 9      (1) 1M x 36        NONE

      17MB        (1) 4M x 9         NONE        (1) 1M x 36

      18MB       (4) 256K x 9     (1) 1M x 36    (1) 16M x 36

      18MB       (4) 256K x 9    (1) 16M x 36    (1) 1M x 36

      18MB        (1) 4M x 9      (1) 1M x 36    (1) 1M x 36

      20MB        (1) 1M x 9     (1) 16M x 36        NONE

      20MB        (1) 1M x 9         NONE        (1) 16M x 36

      20MB        (1) 4M x 9      (1) 4M x 36        NONE

      20MB        (1) 4M x 9         NONE        (1) 4M x 36

      20MB           NONE         (1) 4M x 36    (1) 16M x 36

      20MB           NONE        (1) 16M x 36    (1) 4M x 36

      21MB       (4) 256K x 9     (1) 4M x 36    (1) 16M x 36

      21MB       (4) 256K x 9    (1) 16M x 36    (1) 4M x 36

      21MB        (1) 1M x 9      (1) 1M x 36    (1) 16M x 36

      21MB        (1) 1M x 9     (1) 16M x 36    (1) 1M x 36

      21MB        (1) 4M x 9      (1) 1M x 36    (1) 4M x 36

      21MB        (1) 4M x 9      (1) 4M x 36    (1) 1M x 36

      24MB        (1) 1M x 9      (1) 4M x 36    (1) 16M x 36

      24MB        (1) 1M x 9     (1) 16M x 36    (1) 4M x 36

      24MB        (1) 4M x 9      (1) 4M x 36    (1) 4M x 36

      32MB        (1) 4M x 9     (1) 16M x 36        NONE

      32MB        (1) 4M x 9         NONE        (1) 16M x 36

      32MB           NONE        (1) 16M x 36    (1) 16M x 36

      32MB           NONE        (1) 32M x 36        NONE

      32MB           NONE            NONE        (1) 32M x 36

      33MB       (4) 256K x 9    (1) 16M x 36    (1) 16M x 36

      33MB        (1) 4M x 9      (1) 1M x 36    (1) 16M x 36

      33MB        (1) 4M x 9     (1) 16M x 36    (1) 1M x 36

      36MB        (1) 1M x 9     (1) 16M x 36    (1) 16M x 36

      36MB        (1) 4M x 9      (1) 4M x 36    (1) 16M x 36

      36MB        (1) 4M x 9     (1) 16M x 36    (1) 4M x 36

      48MB        (1) 4M x 9     (1) 16M x 36    (1) 16M x 36

      64MB        (1) 16M x 9        NONE            NONE

      64MB           NONE        (1) 32M x 36    (1) 32M x 36

      65MB        (1) 16M x 9     (1) 1M x 36        NONE

      65MB        (1) 16M x 9        NONE        (1) 1M x 36

      66MB        (1) 16M x 9     (1) 1M x 36    (1) 1M x 36

      68MB        (1) 16M x 9     (1) 4M x 36        NONE

      68MB        (1) 16M x 9        NONE        (1) 4M x 36

      69MB        (1) 16M x 9     (1) 1M x 36    (1) 4M x 36

      69MB        (1) 16M x 9     (1) 4M x 36    (1) 1M x 36

                  DRAM CONFIGURATION (CONT.)

      Size          Bank 0          Bank 1          Bank 2

      72MB        (1) 16M x 9     (1) 4M x 36    (1) 4M x 36

      80MB        (1) 16M x 9    (1) 16M x 36        NONE

      80MB        (1) 16M x 9        NONE        (1) 16M x 36

      81MB        (1) 16M x 9     (1) 1M x 36    (1) 16M x 36

      81MB        (1) 16M x 9    (1) 16M x 36    (1) 1M x 36

      84MB        (1) 16M x 9     (1) 4M x 36    (1) 16M x 36

      84MB        (1) 16M x 9    (1) 16M x 36    (1) 4M x 36

      96MB        (1) 16M x 9    (1) 16M x 36    (1) 16M x 36

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8

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

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

                        CACHE JUMPER CONFIGURATION

      Size               JS1               JS2                 JS3

      64KB            pins 1 & 2        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

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

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

                          CPU TYPE CONFIGURATION

      Type         JC1   JC2     JC3      JC4      JC5      JC7    JCX1

     CX486S        2 &   2 &    Closed    Open     Open     1 &    Open
                   3      3                                 2

  CX486S/CX487S    1 &   1 &    Closed    Open     Open     1 &   Closed
                   2      2                                 2

     CX487S        1 &   1 &    Closed    Open     Open     1 &   Closed
                   2      2                                 2

     80486SL       1 &   1 &    Closed    Open    Closed    1 &    Open
                   2      2                                 2

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

     CX486DX       1 &   1 &    Closed    Open     Open     1 &   Closed
                   2      2                                 2

     80486DX       1 &   1 &    Closed    Open    Closed    1 &    Open
                   2      2                                 2

    ODP486SX       1 &   1 &    Closed    Open    Closed    1 &    Open
                   2      2                                 2

    80486DX2       1 &   1 &    Closed    Open    Closed    1 &    Open
                   2      2                                 2

     Pentium       1 &   1 &    Open     Closed    Open     2 &    Open
    Overdrive      2      2                                 3

  Note:Pins designated should be in the closed position.

                      CPU TYPE CONFIGURATION (CONT.)

      Type        JCX2      JP2     JX2         RN12            RN13

     CX486S       pins 2   pins 2  pins 2        Not          Installed
                   & 3      & 3     & 3       installed

    80486SL       pins 1   pins 2  pins 2     Installed     Not installed
                   & 2      & 3     & 3

    80486SX       pins 1   pins 2  pins 2        Not        Not installed
                   & 2      & 3     & 3       installed

    CX486DX       pins 1   pins 2  pins 2        Not          Installed
                   & 2      & 3     & 3       installed

    80486DX       pins 1   pins 1  pins 1        Not        Not installed
                   & 2      & 2     & 2       installed

    ODP486SX      pins 1   pins 2  pins 2     Installed     Not installed
                   & 2      & 3     & 3

    80486DX2      pins 1   pins 1  pins 1        Not        Not installed
                   & 2      & 2     & 2       installed

     Pentium      pins 1   pins 1  pins 1     Installed     Not installed
   Overdrive       & 2      & 2     & 2

  Note:Pins designated should be in the closed position.

                          CPU SPEED CONFIGURATION

    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

                          KEYBOARD CONTROL SELECT

     Keyboard           JX3               RN1                 RN2

     Internal        pins 2 & 3      Not installed         Installed
                       closed

     External        pins 1 & 2        Installed         Not installed
                       closed

                       MISCELLANEOUS TECHNICAL NOTES

   When U15 is installed JP5 and JP6 should be set to pins 2 & 3 closed.

     When U15 is not installed, JP5 and JP6 should be set to pins 1 & 2
                                  closed.

                  The exact location for U15 is unknown.

                   The exact function of X2 is unknown.

