JATON CORPORATION

JAM-4001

Processor         80486SX/80487SX/80486DX
Processor Speed   33/40/50MHz
Chip Set          UMC
Max. Onboard DRAM Model 1: 10MB

                  Model 2: 40MB
Cache             64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J1       Turbo switch                J4

  Speaker                     J2       Turbo LED                   J5

  Reset switch                J3       External battery            J8

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                J7             Closed

      Monitor type select monochrome           J7              Open

  »   Battery type select internal             J8            pins 1 & 2
                                                              closed

      Battery type select external             J8             Closed

                       DRAM CONFIGURATION (MODEL 1)

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB         (8) 44256        NONE           NONE           NONE

     2MB         (8) 44256     (4) 256K x 9      NONE           NONE

     3MB         (8) 44256     (4) 256K x 9   (4) 256K x 9      NONE

     4MB         (8) 44256     (4) 256K x 9   (4) 256K x 9  (4) 256K x 9

     5MB         (8) 44256     (4) 1M x 9        NONE           NONE

     6MB         (8) 44256     (4) 256K x 9   (4) 1M x 9        NONE

     9MB         (8) 44256     (4) 1M x 9     (4) 1M x 9        NONE

     10MB        (8) 44256     (4) 256K x 9   (4) 1M x 9     (4) 1M x 9

  Note:Bank 0 is factory installed and is not configurable.

                    DRAM CONFIGURATION (MODEL 2)

    Size         Bank 0       Bank 1        Bank 2        Bank 3

     4MB       (8) 441000      NONE          NONE          NONE

     8MB       (8) 441000   (4) 1M x 9       NONE          NONE

    12MB       (8) 441000   (4) 1M x 9    (4) 1M x 9       NONE

    16MB       (8) 441000   (4) 1M x 9    (4) 1M x 9    (4) 1M x 9

    20MB       (8) 441000   (4) 4M x 9       NONE          NONE

    24MB       (8) 441000   (4) 1M x 9    (4) 4M x 9       NONE

    36MB       (8) 441000   (4) 4M x 9    (4) 4M x 9       NONE

    40MB       (8) 441000   (4) 1M x 9    (4) 4M x 9    (4) 4M x 9

  Note:Bank 0 is factory installed and is not configurable.

                    CACHE CONFIGURATION

     Size          Bank A         Bank B          TAG

     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       S1        S2         S3        S4        S5

   64KB      1 & 2     1 & 2     1 & 2      Open     1 & 2

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

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

  Note: Pins designated should be in the closed position.

                     CPU TYPE CONFIGURATION

   Type        W4         W5         W6         W10       W11

  80486SX     1 & 2      1 & 2      1 & 2     Closed      Open

  80487SX     Open       Open       2 & 3      Open      Closed

  80486DX     1 & 2      2 & 3      1 & 2     Closed      Open

  Note: Pins designated should be in the closed position.