
FIRST INTERNATIONAL COMPUTER, INC.

486VC-H (REV. A1)

Processor           80486SX/80487SX/80486DX/80486DX2
Processor Speed     16/20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set            VT
Max. Onboard DRAM   128MB
SRAM Cache          64/128/256KB
BIOS                Award
Dimensions          289.8mm x 218.4mm
I/O Options         None
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo LED                   J6       Speaker                     J9

  Turbo switch                J7       Power LED & keylock         J10

  Reset switch                J8

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             J1              open

      CMOS memory clear                        J1             closed

     Monitor type select monochrome           J2              open

      Monitor type select color                J2             closed

     CPU speed select OSC1/1               JK1 & JK2        pins 2 & 3
                                                              closed

      CPU speed select OSC1/2               JK1 & JK2        pins 1 & 2
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9    (4) 1M x 9

      5MB         (4) 1M x 9     (4) 256K x 9

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

      16MB        (4) 4M x 9         NONE

      17MB        (4) 256K x 9    (4) 4M x 9

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

      65MB        (4) 16M x 9    (4) 256K x 9

      68MB        (4) 16M x 9     (4) 4M x 9

      80MB        (4) 16M x 9     (4) 4M x 9

     128MB        (4) 16M x 9    (4) 16M x 9

                            SRAM CONFIGURATION

    Size       Cache      Location       TAG/Dirty       JS1       JS2
               SRAM                         Bit

    64KB      (8) 8K x   Banks 0 & 1    (2) 8K x 8      pins 1   pins 1 &
                 8                                       & 2        2

   128KB      (4) 32K      Bank 0       (2) 8K x 8      pins 1   pins 2 &
                x 8                                      & 2        3

   256KB      (8) 32K    Banks 0 & 1    (2) 32K x 8     pins 2   pins 2 &
                x 8                                      & 3        3

  Note:Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

     CPU Type             JC1                JC2               JC3

     80486DX2          pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

      80486DX          pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

      80487SX          pins 1 & 2         pins 1 & 2        pins 2 & 3
                         closed            closed             closed

      80486SX          pins 2 & 3         pins 2 & 3           open
                         closed            closed

