
FIRST INTERNATIONAL COMPUTER, INC.

80486 (VER. 2)

Processor  CX486M6/80486SX/AM486DXLT/CX486M7/UMC U5/80486DX/
           80486DX2/80486DX4/SL80486DX4/P24D/P24T
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   C & T
Video Chip None
Set
Maximum    64MB
Onboard
Memory
Maximum    None
Video
Memory
Cache      64/128/256/512/1024KB
BIOS       AMI
Dimensions 254mm x 218mm
I/O        32-bit VESA local bus slots (3), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location    Purpose                   Location

  External battery          JP1       Reset switch                JP20

  Power LED & keylock       JP15      Turbo switch                JP22

  Speaker                   JP18      Green PC connector          JP23

  Turbo LED                 JP19      32-bit VESA local bus    SL1 - SL3
                                      slots

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Battery type select internal            JP1           Pins 2 & 3
                                                              closed

      Battery type select external            JP1             Closed

      CMOS memory clear                       JP1           Pins 3 & 4
                                                              closed

     Factory configured - do not alter       JP2              Open

      Flash BIOS voltage select 12v           JP3           Pins 2 & 3
                                                              closed

      Flash BIOS voltage select 5v            JP3           Pins 1 & 2
                                                              closed

                        DRAM CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

       1MB        (1) 256K x 36         None            None

       1MB             None        (1) 256K x 36        None

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

       2MB             None        (1) 256K x 36    (4) 256K x 9

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

       4MB         (1) 1M x 36          None            None

       4MB             None         (1) 1M x 36         None

       5MB         (1) 1M x 36     (1) 256K x 36        None

       5MB        (1) 256K x 36     (1) 1M x 36         None

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

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

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

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

       8MB         (1) 2M x 36          None            None

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

       8MB             None         (1) 2M x 36         None

       9MB         (1) 2M x 36     (1) 256K x 36        None

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

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

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

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

      10MB        (1) 256K x 36     (1) 2M x 36     (4) 256K x 9

      12MB         (1) 2M x 36      (1) 1M x 36         None

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

      13MB        (1) 256K x 36     (1) 2M x 36      (1) 1M x 9

      13MB         (1) 1M x 36      (1) 2M x 36     (4) 256K x 9

      16MB         (1) 4M x 36          None            None

      16MB             None         (1) 4M x 36         None

      16MB         (1) 1M x 36      (1) 2M x 36      (1) 1M x 9

      17MB         (1) 4M x 36     (1) 256K x 36        None

      17MB        (1) 256K x 36     (1) 4M x 36         None

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

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

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

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

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

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

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

      20MB         (1) 4M x 36      (1) 1M x 36         None

      20MB         (1) 1M x 36      (1) 4M x 36         None

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

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

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

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

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

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

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

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

      24MB             None         (1) 2M x 36      (1) 4M x 9

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

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

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

      25MB        (1) 256K x 36     (1) 2M x 36      (1) 4M x 9

      25MB         (1) 4M x 36      (1) 2M x 36     (4) 256K x 9

      28MB         (1) 4M x 36      (1) 2M x 36      (1) 1M x 9

      32MB         (1) 8M x 36          None            None

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

      32MB             None         (1) 8M x 36         None

      32MB             None         (1) 4M x 36      (1) 4M x 9

      33MB         (1) 8M x 36     (1) 256K x 36        None

      33MB        (1) 256K x 36     (1) 8M x 36         None

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

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

      33MB             None         (1) 8M x 36     (4) 256K x 9

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

      34MB        (1) 256K x 36     (1) 8M x 36     (4) 256K x 9

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

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

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

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

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

      37MB        (1) 256K x 36     (1) 8M x 36      (1) 1M x 9

      37MB         (1) 1M x 36      (1) 8M x 36     (4) 256K x 9

      40MB         (1) 2M x 36      (1) 8M x 36         None

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

      40MB         (1) 4M x 36      (1) 2M x 36      (1) 4M x 9

      40MB         (1) 1M x 36      (1) 8M x 36      (1) 1M x 9

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

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

      48MB             None         (1) 8M x 36      (1) 4M x 9

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

      49MB        (1) 256K x 36     (1) 8M x 36      (1) 4M x 9

      49MB         (1) 4M x 36      (1) 8M x 36     (4) 256K x 9

      52MB         (1) 1M x 36      (1) 8M x 36      (1) 4M x 9

      52MB         (1) 4M x 36      (1) 8M x 36      (1) 1M x 9

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

      64MB         (1) 4M x 36      (1) 8M x 36      (1) 4M x 9

                      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 (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) 64K x 8     (4) 64K x 8    (1) 32K x 8

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

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

                        CACHE JUMPER CONFIGURATION

   Size      JP5      JP10      JP11        JP12       JP13       JP14

   64KB     2 & 3     2 & 3     Open        Open       Open       Open

  128KB     1 & 2     1 & 2     Open        Open       Open      Closed

   256KB    2 & 3     2 & 3     Open        Open      Closed     Closed
   (A)

   256KB    1 & 2,    1 & 2     Open        Open      Closed     Closed
   (B)      3 & 4

   512KB    2 & 3,    2 & 3     Open       Closed     Closed     Closed
   (A)      4 & 5

   512KB    1 & 2,    1 & 2     Open       Closed     Closed     Closed
   (B)      3 & 4,
            5 & 6

   1MB      2 & 3,    2 & 3    Closed      Closed     Closed     Closed
            4 & 5,
            6 & 7

  Note: Pins designated should be in the closed position.

            CPU SPEED SELECTION

   Speed      JP6        JP7        JP8

   25MHz      Open       Open     Closed

   33MHz     Closed     Closed    Closed

   40MHz      Open      Closed    Closed

  50iMHz      Open       Open     Closed

   50MHz     Closed      Open      Open

  66iMHz     Closed     Closed    Closed

  75iMHz      Open       Open     Closed

  100iMHz    Closed     Closed    Closed

                            CPU TYPE SELECTION

         Type                JP27             JP28              JP29

        CX486M6          2 & 3, 4 & 5     1 & 2, 3 & 4,     1 & 2, 3 & 4,
                                              5 & 6            5 & 6

        80486SX              Open             2 & 3             Open

       AM486DXLT             Open             2 & 3            2 & 3

        CX486M7              2 & 3        1 & 2, 3 & 4,     1 & 2, 3 & 4,
                                              5 & 6            5 & 6

        UMC U5               Open             2 & 3            2 & 3

        80486DX              Open             2 & 3             Open

       80486DX2              Open             2 & 3             Open

       80486DX4          1 & 2, 3 & 4         1 & 2            1 & 2

      SL80486DX4         1 & 2, 3 & 4         1 & 2            1 & 2

         P24D            1 & 2, 3 & 4     1 & 2, 4 & 5      1 & 2, 4 & 5

         P24T            1 & 2, 3 & 4         1 & 2            1 & 2

  Note: Pins designated should be in the closed position.

                        CPU TYPE SELECTION (CONT)

         Type                JP30             JP32              JP33

        CX486M6          1 & 2, 3 & 4,        Open             2 & 3
                             5 & 6

        80486SX              Open             Open             2 & 3

       AM486DXLT             1 & 2        1 & 2, 3 & 4      1 & 2, 3 & 4

        CX486M7          2 & 3, 4 & 5         1 & 2         1 & 2, 3 & 4

        UMC U5               1 & 2            3 & 4            2 & 3

        80486DX              Open             1 & 2         1 & 2, 3 & 4

       80486DX2              Open             1 & 2         1 & 2, 3 & 4

       80486DX4              5 & 6            1 & 2         1 & 2, 3 & 4

      SL80486DX4             5 & 6            1 & 2         1 & 2, 3 & 4

         P24D            3 & 4, 5 & 6         1 & 2         1 & 2, 3 & 4

         P24T                5 & 6            2 & 3         1 & 2, 3 & 4

  Note: Pins designated should be in the closed position.

  CPU MULTIPLIER SELECTION (80486DX4 ONLY)

      Multiplier               JP31

          2x             Pins 2 & 3 closed

         2.5x            Pins 1 & 2 closed

          3x                   Open

                           CPU VOLTAGE SELECTION

     Voltage             JP24               JP25               JP26

       3.3v            Pins 1 & 2        Pins 1 & 2         Pins 1 & 2
                        closed             closed             closed

        5v             Pins 2 & 3        Pins 2 & 3         Pins 2 & 3
                        closed             closed             closed

  VL BUS WAIT STATE SELECTION

    Setting           JP17

       0              Open

       1             Closed

  VL-BUS SPEED SELECTION

   Setting        JP16

  <= 33MHz        Open

   >33 MHz       Closed

