UNIDENTIFIED

ACE-486DX-OI2

Processor         80486SX/80487SX/80486DX
Processor Speed   33/40MHz
Chip Set          Unidentified
Max. Onboard DRAM 64MB
Cache             64/256KB
BIOS              Unidentified
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            J11       Turbo LED                 JP11

  Power LED & keylock         J20       Reset switch               SW1

  Speaker                     J21       Turbo switch               SW2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CMOS memory normal operation            JP1           pins 2 & 3
                                                              closed

      CMOS memory clear                       JP1           pins 1 & 2
                                                              closed

  »   Monitor type select color               JP2             Closed

      Monitor type select monochrome          JP2              Open

  »   I/O bus speed select ATCLK/4            JP6              Open

      I/O bus speed select ATCLK/6            JP6             Closed

  »   Factory configured - do not             JP7              N/A
      alter

                            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

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

     6MB        (4) 256K x 9   (4) 256K x 9    (1) 1M x 36       NONE

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

     9MB        (4) 256K x 9    (4) 1M x 9     (1) 1M x 36       NONE

     10MB       (4) 256K x 9   (4) 256K x 9    (1) 1M x 36   (1) 1M x 36

     12MB       (4) 1M x 9      (4) 1M x 9     (1) 1M x 36       NONE

     13MB       (4) 256K x 9    (4) 1M x 9     (1) 1M x 36   (1) 1M x 36

     16MB       (4) 1M x 9      (4) 1M x 9     (1) 1M x 36   (1) 1M x 36

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

     18MB       (4) 256K x 9   (4) 256K x 9    (1) 4M x 36       NONE

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

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

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

     24MB       (4) 4M x 9      (4) 1M x 9     (1) 1M x 36       NONE

     24MB       (4) 1M x 9      (4) 1M x 9     (1) 4M x 36       NONE

     28MB       (4) 1M x 9      (4) 4M x 9     (1) 1M x 36   (1) 1M x 36

     28MB       (4) 4M x 9      (4) 1M x 9     (1) 1M x 36   (1) 1M x 36

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

     34MB       (4) 256K x 9   (4) 256K x 9    (1) 4M x 36   (1) 4M x 36

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

     40MB       (4) 4M x 9      (4) 4M x 9     (1) 1M x 36   (1) 1M x 36

     40MB       (4) 1M x 9      (4) 1M x 9     (1) 4M x 36   (1) 4M x 36

     48MB       (4) 4M x 9      (4) 4M x 9     (1) 4M x 36       NONE

     64MB       (4) 4M x 9      (4) 4M x 9     (1) 4M x 36   (1) 4M x 36

                           CACHE CONFIGURATION

     Size          Bank 0         Bank 1       TAG (U34)      TAG (U46)

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8     (1) 64K x 8

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 8K x 8     (1) 64K x 8

           CACHE JUMPER CONFIGURATION

   Size      JP8       JP9      JP10      JP12

   64KB     Open      Open      Open      Open

  256KB     Open     Closed    Closed    Closed

                          CPU TYPE CONFIGURATION

       Type               JP3               JP4                JP5

      80486SX             Open              Open            pins 2 & 3
                                                             closed

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

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