
CALIBER COMPUTER

486 WB-U1

Processor              80486SX/80487SX/80486DX/80486DX2
Processor Speed        16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set               UNI
Max. Onboard DRAM      32MB
Cache                  32/64/128/256KB
BIOS                   AMI
Dimensions             240mm x 220mm
I/O Options            None
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            JP1      Turbo LED                  JP16

  Reset switch               JP14      Speaker                    JP17

  Turbo switch               JP15      Power LED & keylock        JP18

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             JP2           pins 1 & 2
                                                              closed

      CMOS memory clear                        JP2           pins 2 & 3
                                                              closed

     Gate A20 connection select KBGA20       JP10           pins 2 & 3
                                                              closed

      Gate A20 connection select              JP10           pins 1 & 2
      emulated KBGA20                                         closed

     Monitor type select color               JP12            Closed

      Monitor type select monochrome          JP12             Open

              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

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

      16MB        (4) 4M x 9         NONE

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

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

     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 (WRITE-BACK)

    Size         JP22            JP23           JP25            JP26

    32KB       pins 2 & 3     pins 2 & 3      pins 1 & 2      pins 2 & 3
                closed          closed         closed          closed

    64KB       pins 2 & 3     pins 2 & 3      pins 2 & 3      pins 1 & 2
                closed          closed         closed          closed

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

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

              CACHE JUMPER CONFIGURATION FOR (WRITE-THROUGH)

    Size         JP22            JP23           JP25            JP26

    32KB       pins 2 & 3     pins 2 & 3      pins 2 & 3      pins 2 & 3
                closed          closed         closed          closed

    64KB       pins 2 & 3     pins 2 & 3      pins 2 & 3      pins 2 & 3
                closed          closed         closed          closed

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

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

                       CACHE RESISTOR CONFIGURATION

   Size          J27             J28            J29              J30

   32KB       Installed     Not installed   Not installed   Not installed

   64KB     Not installed     Installed     Not installed   Not installed

   128KB    Not installed   Not installed    Installed      Not installed

   256KB    Not installed   Not installed   Not installed     Installed

                             CPU CONFIGURATION

      Type         Speed        JP3         JP7        JP9        JP13

    80486SX        16MHz       1 & 2       Open       2 & 3       2 & 3

    80486SX        20MHz       1 & 2       Open       2 & 3       2 & 3

    80486SX        25MHz       2 & 3       Open       2 & 3       2 & 3

    80487SX        20MHz       1 & 2       2 & 3     1 & 2, 3     1 & 2
                                                       & 4

    80486DX        25MHz       1 & 2       1 & 2     1 & 2, 3     1 & 2
                                                       & 4

    80486DX        33MHz       1 & 2       1 & 2     1 & 2, 3     1 & 2
                                                       & 4

    80486DX        50MHz       2 & 3       1 & 2     1 & 2, 3     1 & 2
                                                       & 4

    80486DX2       50MHz       1 & 2       1 & 2     1 & 2, 3     1 & 2
                                                       & 4

    80486DX2       66MHz       1 & 2       1 & 2     1 & 2, 3     1 & 2
                                                       & 4

  Note:Pins designated should be in the closed position.

