
FIRST INTERNATIONAL COMPUTER, INC.

486-VC CACHE

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          330mm x 218mm
I/O Options         None
NPU Options         4167

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Turbo LED                   J7       Speaker                     J10

  Turbo switch                J8       Power LED & keylock         J11

  Reset switch                J9

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             J2              open

      CMOS memory clear                        J2             closed

     Monitor type select monochrome           J3              open

      Monitor type select color                J3             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            JC4

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

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

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

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

