
UNIDENTIFIED

U386

Processor         80386DX
Processor Speed   33/40MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
SRAM Cache        32/128KB
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       NONE
NPU Options       80387

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J1       Reset switch                J4

  Turbo LED                   J2       Speaker                     J5

  Turbo switch                J3       Power LED & keylock         J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             W1             closed

      CMOS memory clear                        W1              open

     Monitor type select color                W2             closed

      Monitor type select monochrome           W2              open

     NPU disabled                             W4              open

      NPU enabled                              W4             closed

     Parity check enabled                     W16           pins 2 & 3
                                                              closed

      Parity check disabled                    W16           pins 1 & 2
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      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) 4M x 9      (4) 1M x 9

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

                  SRAM JUMPER CONFIGURATION

       Jumper                32KB                128KB

         W8            pins 1 & 2 closed   pins 2 & 3 closed

         W9            pins 1 & 2 closed   pins 2 & 3 closed

         W10           pins 1 & 2 closed   pins 2 & 3 closed

         W11           pins 1 & 2 closed   pins 2 & 3 closed

         W12           pins 2 & 3 closed   pins 2 & 3 closed

         W13           pins 1 & 2 closed   pins 1 & 2 closed

         W14           pins 1 & 2 closed   pins 1 & 2 closed

         W15                 open          pins 1 & 2 closed

             SRAM CONFIGURATION

     Size        Cache SRAM        TAG

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

     128KB       (4) 32K x 8   (1) 8K x 8

