UNIDENTIFIED

3486U

Processor        80386DX/80486SX/80487SX/80486DX/80486DX2
Processor Speed  20/25/33/40/50(internal)/50/66(internal)MHz
Chip Set         UNI
Max. Onboard DRAM32MB
Cache            32/64/128/256KB
BIOS             AMI
Dimensions       254mm x 218mm
I/O Options      None
NPU Options      80387DX

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J4       Turbo LED                 JP15

  Power LED & keylock          J5       Turbo switch              JP17

  Speaker                      J6       Reset switch              JP18

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color               JP1             Closed

      Monitor type select monochrome          JP1              Open

  »   CMOS memory normal operation            JP2           pins 1 & 2
                                                              closed

      CMOS memory clear                       JP2           pins 2 & 3
                                                              closed

  »   CPU type select all CPU types           JP3             Closed

      CPU type select 80386DX only            JP3              Open

              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

      20MB        (4) 1M x 9      (4) 4M 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) 8K 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          JP5             JP6             JP7           JP8

     32KB          Open         pins 2 & 3        Open           Open
                                  closed

     64KB         Closed        pins 1 & 2        Open           Open
                                  closed

    128KB         Closed       pins 1 & 2, 3     Closed          Open
                                & 4 closed

    256KB         Closed       pins 1 & 2, 4     Closed         Closed
                                & 5 closed

                       CPU TYPE CONFIGURATION

   Type      JP4      JP9      JP10      JP12      JP14      JP16

  80386     Open     1 & 2     2 & 3     2 & 3     Open     2 & 3

  80486     Closed   2 & 3     1 & 2     1 & 2    2 & 3     1 & 2

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

                Type                                  JP13

               80386DX                                Open

           80486SX (PQFP)                             Open

            80486SX (PGA)                  pins 5 & 6, 9 & 10 closed

               80487SX                   pins 2 & 3, 4 & 5, 6 & 7, 8 & 9
                                                     closed

           80486DX (PQFP)                             Open

            80486DX (PGA)               pins 1 & 2, 4 & 5, 6 & 7, 9 & 10
                                                     closed

              80486DX2                  pins 1 & 2, 4 & 5, 6 & 7, 9 & 10
                                                     closed