DASH COMPUTER, INC.

DC-486SX 25/33/50

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

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  External battery           J10       32-bit external             S1
                                       memory card

  Power LED & keylock        J23       Reset switch               SW1

  Speaker                    J24       Turbo switch               SW2

  Turbo LED                 JP12

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                JP1            Closed

      Monitor type select monochrome           JP1             Open

  »   CMOS memory normal operation             JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP2           pins 1 & 2
                                                              closed

  »   Bus speed select ATCLK/6                 JP3            Closed

      Bus speed select ATCLK/4                 JP3             Open

  »   CPU speed select OSC/2                   JP4           pins 2 & 3
                                                              closed

      CPU speed select OSC/1                   JP4           pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

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

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

     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

     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

     64KB        (9) 8K x 8

     256KB      (9) 32K x 8

           CACHE JUMPER CONFIGURATION

   Size      JP8       JP9      JP10      JP11

   64KB      Open     Open      Open      Open

  256KB     Closed   Closed    Closed    Closed

                          CPU TYPE CONFIGURATION

       Type               JP5                JP6               JP7

      80486SX             Open            pins 2 & 3          Closed
                                           closed

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

      80486DX          pins 2 & 3         pins 1 & 2          Closed
                         closed            closed