
FIRST INTERNATIONAL COMPUTER, INC.

486 VAV (REV. B1)

Processor         80486SX/80487SX/80486DX/80486DX2
Processor Speed   25/33/50(internal)/66(internal)MHz
Chip Set          VIA
Max. Onboard DRAM 64MB
Cache             64/128/256KB
BIOS              AMI/Award
Dimensions        330mm x 218mm
I/O Options       32-bit VESA local bus slots (2), floppy drive interface,
                  IDE interface, parallel port, PS/2 mouse port, serial
                  ports (2), VGA feature connector, VGA port
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Parallel port              CN1       VGA port                   CN8

  Floppy drive               CN2       Chassis fan power          CN9
  interface

  IDE interface              CN3       IDE interface LED          CN10

  PS/2 mouse port            CN4       Power LED & keylock        CN11

  Serial port 1 & 2          CN5       Turbo LED                   J2

  VGA feature connector      CN6       32-bit VESA Local bus       S1
                                       slot

  Reset switch               CN7       32-bit VESA Local bus       S2
                                       slot

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Password normal                          J7              Open

      Password clear                           J7             Closed

     Monitor type select color               J10           pins 1 & 2
                                                              closed

      Monitor type select monochrome          J10           pins 2 & 3
                                                              closed

     VGA interrupt enabled                   J11             Closed

      VGA interrupt disabled                  J11              Open

     Factory configured - do not             JC7           pins 2 & 3
      alter                                                   closed

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

     Factory configured - do not             JK1           pins 1 & 2
      alter                                                   closed

     Factory configured - do not             JK2           pins 1 & 2
      alter                                                   closed

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

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

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

      3MB       (1) 1M x 36    (1) 1M x 36    (1) 1M x 36       NONE

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

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

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

      6MB       (1) 4M x 36    (1) 1M x 36    (1) 1M x 36       NONE

      7MB       (1) 4M x 36    (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

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

     12MB       (1) 4M x 36    (1) 4M x 36    (1) 4M x 36       NONE

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

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

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

     18MB       (1) 16M x 36   (1) 1M x 36    (1) 1M x 36       NONE

     19MB       (1) 16M x 36   (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

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

     21MB       (1) 16M x 36   (1) 4M x 36    (1) 1M x 36       NONE

     22MB       (1) 16M x 36   (1) 4M x 36    (1) 1M x 36    (1) 1M x 36

     24MB       (1) 16M x 36   (1) 4M x 36    (1) 4M x 36       NONE

     28MB       (1) 16M x 36   (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

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

     33MB       (1) 16M x 36   (1) 16M x 36   (1) 1M x 36       NONE

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

     40MB       (1) 16M x 36   (1) 16M x 36   (1) 4M x 36    (1) 4M x 36

     48MB       (1) 16M x 36   (1) 16M x 36   (1) 16M x 36      NONE

     64MB       (1) 16M x 36   (1) 16M x 36   (1) 16M x 36  (1) 16M x 36

                            CACHE CONFIGURATION

     Size          Bank 0       Bank 1          TAG       MD1 (Dirty bit)

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

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

     256KB       (4) 32K x 8  (4) 32K x 8   (1) 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 2 & 3        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

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

                            VRAM CONFIGURATION

     Size            M1             M2            M3             M4

      1MB           N/A            N/A         (1) 256 x    (1) 256 x 16
                                                  16

      2MB         (1) 256 x      (1) 256 x        N/A            N/A
                     16             16

  Note: M3 & M4 are factory installed and are not configurable.

                          CPU TYPE CONFIGURATION

       Speed              JC1                JC2               JC3

      SX25MHz          pins 2 & 3         pins 2 & 3        pins 2 & 3
                         closed            closed             closed

      DX25MHz          pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

      DX33MHz          pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

     DX50iMHz          pins 1 & 2         pins 1 & 2        pins 2 & 3
                         closed            closed             closed

      DX50MHz          pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

      DX66MHz          pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

                    CPU TYPE CONFIGURATION - JK5

   Setting     Pins 1 & 2    Pins 3 & 4    Pins 5 & 6    Pins 7 & 8

    25MHz         Open         Closed         Open          Open

    33MHz        Closed         Open          Open         Closed

    50iMHz        Open         Closed         Open          Open

    66iMHz       Closed         Open          Open         Closed

