J-BOND COMPUTER SYSTEMS CORPORATION

486 CACHE

Processor              80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed        20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set               ETEQ
Max. Onboard DRAM      32MB
Cache                  64/256KB
BIOS                   AMI
Dimensions             221mm x 254mm
I/O Options            None
NPU Options            4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            BATT      Reset switch               RST

  Power LED & keylock        KEYLC      Speaker                    SPK

  Turbo LED                   LED       Turbo switch               TBS

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CPU speed select switchable at           JP1            Closed
      keyboard

      CPU speed select switchable at           JP1             Open
      turbo switch

  »   Battery type select internal             JP7            Closed

      Battery type select external             JP7             Open

  »   CPU speed select iOSC/2                 JP50           pins 2 & 3
                                                              closed

      CPU speed select iOSC/1                 JP50           pins 1 & 2
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9    (4) 1M x 9

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

      16MB        (4) 4M x 9         NONE

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

      20MB        (4) 1M x 9      (4) 4M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

            CACHE CONFIGURATION

     Size          Bank 0          TAG

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

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

                         CACHEJUMPER CONFIGURATION

     Size          JP2            JP3            JP4             JP5

     64KB          Open        pins 1 & 2        Open         pins 1 & 2
                                 closed                        closed

    256KB         Closed       pins 2 & 3       Closed        pins 2 & 3
                                 closed                        closed

                       CPU TYPE CONFIGURATION

    Type        JX1        JX2         JX3         JX4        JX5

  80486SX      Open        Open       Open       Closed      Open

  80487SX      Open       Closed     Closed       Open      Closed

  ODP486SX     Open       Closed     Closed       Open      Closed

  80486DX     Closed       Open      Closed       Open      Closed

  80486DX2    Closed       Open      Closed       Open      Closed