POLOTEC, INC.

MBA-503B

Processor         80386DX/CX486DLC
Processor Speed   25/33/40MHz
Chip Set          Micronics
Max. Onboard DRAM 32MB
SRAM Cache        None
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Turbo LED                   D4       Reset switch                J5

  External battery            J3       Speaker                     J6

  Parallel port               J4       Power LED & keylock         J7

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   RTC type select 146818                   JP1           pins 2 & 3
                                                              closed
                                               JP3
                                                              closed

      RTC type select DS1287                   JP1           pins 1 & 2
                                                              closed
                                               JP3
                                                               open

  »   CMOS memory normal operation             JP2           pins 1 & 2
                                                              closed

      CMOS memory clear                        JP2           pins 2 & 3
                                                              closed

  »   Monitor type select color                JP4            closed

      Monitor type select monochrome           JP4             open

      NPU select 80387                         JP5           pins 1 & 2
                                                              closed

      NPU select 3167 or none                  JP5           pins 2 & 3
                                                              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

      20MB        (4) 1M x 9      (4) 4M x 9

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