
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.

