
ROBOTECH, INC.

GMB-386UMC

Processor         80386DX/CX486DLC
Processor Speed   20/25/33/40MHz
Chip Set          UMC
Max. Onboard DRAM 64MB
Cache             32/128KB
BIOS              AMI
Dimensions        220mm x 218mm
I/O Options       None
NPU Options       80387DX/CX487DLC

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J1       Turbo LED                   J5

  Reset switch                J3       External battery            J6

  Turbo switch                J4       Speaker                     J10

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Turbo switch select turbo                J4              Open

      Turbo switch select normal               J4             Closed

     NPU disabled                            JP6           pins 1 & 2
                                                              closed

      NPU enabled                             JP6           pins 2 & 3
                                                              closed

     Factory configured - do not             JP8           pins 2 & 3
      alter                                                   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) 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

      64MB        (4) 16M x 9        NONE

            CACHE CONFIGURATION

     Size          Bank 0          TAG

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

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

  CACHE JUMPER CONFIGURATION

   Size      JP3        JP4

   32KB      Open      Open

  128KB     Closed    Closed

                   CPU SPEED CONFIGURATION

        Speed                JP1                  JP2

        20MHz          pins 2 & 3 closed   pins 2 & 3 closed

        25MHz          pins 2 & 3 closed   pins 1 & 2 closed

        33MHz          pins 1 & 2 closed   pins 2 & 3 closed

        40MHz          pins 1 & 2 closed   pins 1 & 2 closed

