
MICROWAY, INC.

486 US

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

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  External battery           J1        Turbo switch                J6

  Power LED & keylock        J3        Turbo LED                   J7

  Speaker                    J4        32-bit external             S1
                                       memory card

  Reset switch               J5

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color               JP10             Open

      Monitor type select monochrome          JP10            Closed

     Bus speed select fast                   JP12           pins 1 & 2
                                                              closed

      Bus speed select slow                   JP12           pins 2 & 3
                                                              closed

     CMOS memory normal operation            JP19             Open

      CMOS memory clear                       JP19            Closed

                            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

     3MB       (4) 256K x 9   (4) 256K x 9   (4) 256K x 9       NONE

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

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

     5MB       (4) 256K x 9    (4) 1M x 9        NONE           NONE

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

     7MB       (4) 256K x 9   (4) 256K x 9   (4) 256K x 9    (4) 1M x 9

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

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

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

     28MB       (4) 1M x 9     (4) 1M x 9     (4) 1M x 9     (4) 4M x 9

     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

     52MB       (4) 1M x 9     (4) 4M x 9     (4) 4M x 9     (4) 4M x 9

     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 S1.

            CACHE CONFIGURATION

     Size          Bank 0        Bank 1

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

     128KB       (4) 32K x 8      NONE

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

                    CACHE CONFIGURATION

   Size      JP13      JP14      JP16      JP17      JP18

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

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

  256KB     1 & 2      2 & 3     2 & 3     2 & 3    2 & 3

  Note:Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

     Type           JP1            JP2            JP3            JP8

    80486SX         Open        pins 2 & 3     pins 3 & 4       Closed
                                  closed         closed

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

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

