DYNA MICRO, INC.

MBA-386B-25

Processor         80386DX
Processor Speed   25MHz
Chip Set          UMC
Max. Onboard DRAM 12MB
Cache             None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose                Location

  Speed display              J1         Speaker                   J5

  Auxiliary keyboard         J2         Power LED &               J6
                                        keylock

  Reset switch            J3 & J14      Turbo LED                 J7

  Turbo switch            J4 & J13      External battery         J11

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select monochrome           J8              open

      Monitor type select color                J8             closed

  »   NPU type select 3167 or none             J9             closed

      NPU type select 80387                    J9              open

  »   Battery select internal                  J12           pins 2 & 3
                                                              closed

      Battery select external                  J12           pins 1 & 2
                                                              closed

  »   Factory configured - do not alter        JP6           pins 1 & 2
                                                              closed

  »   Factory configured - do not alter        JP7           pins 2 & 3
                                                              closed

                      DRAM CONFIGURATION

      Size          Bank 0          Bank 1          Bank 2

      1MB        (4) 256K x 9        NONE            NONE

      2MB        (4) 256K x 9    (4) 256K x 9        NONE

      3MB        (4) 256K x 9    (4) 256K x 9    (4) 256K x 9

      4MB         (4) 1M x 9         NONE            NONE

      8MB         (4) 1M x 9      (4) 1M x 9         NONE

      12MB        (4) 1M x 9      (4) 1M x 9      (4) 1M x 9

     DRAM SWITCH CONFIGURATION

  Size     SW1/1   SW1/2    SW1/3

   1MB      On       On       On

   2MB      On      Off       On

   3MB      On      Off      Off

   4MB      Off      On       On

   8MB      Off     Off       On

  12MB      Off     Off      Off

      DRAM SPEED CONFIGURATION

  Speed    SW1/1    SW1/2    SW1/3

  80ns      On        On       On

  100ns     On       Off       On