
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

