PC WARE INTERNATIONAL, INC.

UMC 486 VESA BUS

Processor        80486SX/CX487S/80486DX/80486DX2
Processor Speed  20/25/33/50(internal)/50/66(internal)MHz
Chip Set         UMC
Max. Onboard DRAM32MB
Cache            32/64/128/256KB
BIOS             AMI
Dimensions       254mm x 218mm
I/O Options      32-bit VESA local bus slots (3)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  Power LED & keylock         J3        Reset switch               J7

  Speaker                     J4        32-bit VESA local bus      S1
                                        slot

  Turbo LED                   J5        32-bit VESA local bus      S2
                                        slot

  Turbo switch                J6        32-bit VESA local bus      S3
                                        slot

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not              J8              N/A
      alter

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     32KB       (4) 32K x 8        NONE       (1) 8K x 8

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

     128KB      (4) 32K x 8        NONE       (1) 8K x 8

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

                        CACHE JUMPER CONFIGURATION

    Size         JP4         JP5         JP6          JP7          JP8

    32KB         None        None        None        None         None

    64KB         Open      pins 1 &      Open       Closed       Closed
                              2

    128KB      pins 2 &    pins 2 &      Open       Closed       Closed
                  3           3

    256KB      pins 1 &    pins 1 &      Open       Closed       Closed
                  2           2

  Note:Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

       Type               JP3               JP13               JP14

      80486SX             N/A            pins 1 & 2      pins 1 & 2 and 3
                                           closed              & 4

      CX487S             Closed             N/A                N/A

      80487SX             N/A               Open            pins 2 & 3
                                                              closed

      80486DX             N/A            pins 1 & 2      pins 1 & 2 and 3
                                           closed              & 4

     80486DX2             N/A            pins 1 & 2      pins 1 & 2 and 3
                                           closed              & 4

     ODP486SX             N/A            pins 2 & 3      pins 1 & 2 and 3
                                           closed              & 4

  Note:Pins designated should be in the closed position.

                 VESA BUS SPEED CONFIGURATION

        Speed                JP9                 JP16

       < 33MHz               Open          pins 1 & 2 closed

       > 33MHz              Closed         pins 2 & 3 closed