
KT TECHNOLOGY PTE LTD.

386SX NON-CACHE MAINBOARD

Processor         80386SX
Processor Speed   16/20/25/33MHz
Chip Set          Acer
Max. Onboard DRAM 16MB
Cache             None
BIOS              AMI
Dimensions        220mm x 170mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J4       Turbo LED & switch          J8

  Reset switch                J6       Power LED & keylock         J9

  Speaker                     J7

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     ADS delay select enabled                 J5            pins 1 & 2
                                                              closed

      ADS delay select disabled                J5            pins 2 & 3
                                                              closed

     NPU synchronous with CPU                 JP2           pins 1 & 2
                                                              closed

      NPU asynchronous with CPU                JP2           pins 2 & 3
                                                              closed

     CMOS type select 1287                    JP3            Closed

      CMOS type select 146818                  JP3             Open

     Monitor type select color                JP4           pins 2 & 3
                                                              closed

      Monitor type select monochrome           JP4           pins 1 & 2
                                                              closed

     Parity check enabled                     JP6            Closed

      Parity check disabled                    JP6             Open

                            DRAM CONFIGURATION

     Size          Bank 0        Bank 1         Bank 2         Bank 3

     512KB      (1) 256K x 9   (1) 256K x 9      NONE           NONE

      1MB       (1) 256K x 9   (1) 256K x 9   (1) 256K x 9  (1) 256K x 9

      2MB        (1) 1M x 9    (1) 1M x 9        NONE           NONE

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

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

     16MB        (1) 4M x 9    (1) 4M x 9     (1) 4M x 9     (1) 4M x 9

                   CPU SPEED CONFIGURATION

        Speed                JP1                  JP5

        16Mhz          pins 1 & 2 closed   pins 1 & 2 closed

        20Mhz          pins 2 & 3 closed   pins 1 & 2 closed

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

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

