
MICROWISE, INC.

486A-33

Processor         80486SX/80487SX/80486DX
Processor Speed   20/25/33/50MHz
Chip Set          SIS
Max. Onboard DRAM 32MB
Cache             32/64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       32-bit external memory card slot
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                 Location

  Power LED & keylock         CN1       Reset switch              JP1

  Speaker                     CN2       Turbo switch              JP3

  External battery            CN3       Turbo LED                 JP5

  32-bit external memory       J1
  card

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             JP2           pins 1 & 2
                                                              closed

      CMOS memory clear                        JP2           pins 2 & 3
                                                              closed

     Factory configured - do not alter        JP4              N/A

     Monitor type select color               JP15            Closed

      Monitor type select monochrome          JP15             Open

     Factory configured - do not alter       JP19              N/A

     Factory configured - do not alter       JP20              N/A

                            DRAM CONFIGURATION

    Size         Bank 0          Bank 1         Bank 2         Bank 3

     1MB      (4) 256K x 9        NONE           NONE           NONE

     2MB      (4) 256K x 9    (4) 256K x 9       NONE           NONE

     4MB       (4) 1M x 9         NONE           NONE           NONE

     6MB      (4) 256K x 9    (4) 256K x 9    (4) 1M x 9        NONE

     8MB       (4) 1M x 9      (4) 1M x 9        NONE           NONE

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

    12MB       (4) 1M x 9      (4) 1M x 9     (4) 1M x 9        NONE

    16MB       (4) 1M x 9      (4) 1M x 9     (4) 1M x 9     (4) 1M x 9

    16MB       (4) 4M x 9         NONE           NONE           NONE

    18MB      (4) 256K x 9    (4) 256K x 9    (4) 4M x 9        NONE

    20MB       (4) 1M x 9      (4) 4M x 9        NONE           NONE

    24MB       (4) 1M x 9      (4) 1M x 9     (4) 4M x 9        NONE

    32MB       (4) 4M x 9      (4) 4M x 9        NONE           NONE

    36MB       (4) 1M x 9      (4) 4M x 9     (4) 4M x 9        NONE

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

    48MB       (4) 4M x 9      (4) 4M x 9     (4) 4M x 9        NONE

    64MB       (4) 4M x 9      (4) 4M x 9     (4) 4M x 9     (4) 4M x 9

  Note:Banks 2 & 3 are used when a 32-bit external memory card is
  installed at J1.

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     32KB        (4) 8K x 8        NONE       (3) 16K x 4

     64KB        (4) 8K x 8     (4) 8K x 8    (3) 16K x 4

     128KB      (4) 32K x 8        NONE       (3) 16K x 4

     256KB      (4) 32K x 8    (4) 32K x 8    (3) 16K x 4

                        CACHE JUMPER CONFIGURATION

  Size    JP9    JP10   JP11   JP12    JP13   JP14    JP16   JP17   JP18

  32KB    1 &    1 &     1 &    1 &    1 &     1 &    1 &    1 &    1 & 2
           2      2      2      2       2      2       2      2

  64KB    1 &    1 &     2 &    1 &    2 &     1 &    2 &    1 &    1 & 2
           2      2      3      2       3      2       3      2

  128KB   1 &    2 &     2 &    2 &    2 &     1 &    1 &    1 &    2 & 3
           2      3      3      3       3      2       2      2

  256KB   2 &    2 &     2 &    2 &    2 &     2 &    2 &    2 &    2 & 3
           3      3      3      3       3      3       3      3

  Note:Pins designated should be in the closed position.

                         CPU TYPE CONFIGURATION

   Type             JP6                 JP7                  JP8

  80486SX          Open                 Open          pins 2 & 3 closed

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

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

