ABC COMPUTER COMPANY, LTD.

A3886

Processor         80386SX
Processor Speed   20MHz
Chip Set          Intel/VLSI
Max. Onboard DRAM 20MB
Cache             None
BIOS              AMI
Dimensions        219mm x 195mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J1       Reset switch                J4

  Turbo switch                J2       Power LED & Keylock         J5

  Turbo LED                   J3       Speaker                     J6

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

  »   Monitor type select color                JP1            Closed

      Monitor type select monochrome           JP1             Open

  »   Parity enabled                           JP2            Closed

      Parity disabled                          JP2            Closed

  »   Factory configured - do not alter        JP3              N/A

  »   CMOS memory normal operation             JP4             Open

      CMOS memory clear                        JP4            Closed

  »   Pipeline mode enabled                    JP5            Closed

      Pipeline mode disabled                   JP5             Open

  »   Factory configured - do not alter        JP6              N/A

  »   NPU mode select synchronous with         JP7             Open
      CPU

      NPU mode select asynchronous with        JP7            Closed
      CPU

                            DRAM CONFIGURATION

  Size    Batch   Bank 0     Parity    Bank 1    Parity     Bank   Bank 3
                             (P-0)               (P-1)       2

  512KB   512K      (4)       (2)       NONE      NONE     NONE     NONE
                   44256     41256

  512KB   512KS    NONE      NONE       NONE      NONE      (2)     NONE
                                                            256K
                                                            x 9

  1MB      1M       (4)       (2)        (4)       (2)     NONE     NONE
                   44256     41256     44256     41256

  1MB     1MS      NONE      NONE       NONE      NONE      (2)      (2)
                                                            256K   256K x
                                                            x 9      9

  1.5MB   1M512     (4)       (2)        (4)       (2)      (2)     NONE
                   44256     41256     44256     41256      256K
                                                            x 9

  2MB     2MK       (4)       (2)        (4)       (2)      (2)      (2)
                   44256     41256     44256     41256      256K   256K x
                                                            x 9      9

  2MB     2MM       (4)       (2)       NONE      NONE     NONE     NONE
                  441000    411000

  2.5MB   2M512     (4)       (2)        (4)       (2)     NONE     NONE
                   44256     41256     441000    411000

  3MB      3M       (4)       (2)        (4)       (2)      (2)     NONE
                   44256     41256     44256     41256      1M x
                                                             9

  4MB      4M       (4)       (2)        (4)       (2)     NONE     NONE
                  441000    411000     441000    411000

  4MB     4MS      NONE      NONE       NONE      NONE      (2)    (2) 1M
                                                            1M x    x 9
                                                             9

  4.5MB   4M512     (4)       (2)        (4)       (2)      (2)     NONE
                  441000    411000     441000    411000     256K
                                                            x 9

  5MB      5M       (4)       (2)        (4)       (2)      (2)    (2) 1M
                   44256     41256     44256     41256      1M x    x 9
                                                             9

  6MB      6M       (4)       (2)        (4)       (2)      (2)     NONE
                  441000    411000     441000    411000     1M x
                                                             9

  8MB      8M       (4)       (2)        (4)       (2)      (2)    (2) 1M
                  441000    411000     441000    411000     1M x    x 9
                                                             9

  8MB     8M4S     NONE      NONE       NONE      NONE      (2)     NONE
                                                            4M x
                                                             9

  9MB      9M       (4)       (2)        (4)       (2)      (2)     NONE
                   44256     41256     44256     41256      4M x
                                                             9

  12MB    12M       (4)       (2)        (4)       (2)      (2)     NONE
                  441000    411000     441000    411000     4M x
                                                             9

  16MB    16M4S    NONE      NONE       NONE      NONE      (2)    (2) 4M
                                                            4M x    x 9
                                                             9

  17MB    17M       (4)       (2)        (4)       (2)      (2)    (2) 4M
                   44256     41256     44256     41256      4M x    x 9
                                                             9

  20MB    20M       (4)       (2)        (4)       (2)      (2)    (2) 4M
                  441000    411000     441000    411000     4M x    x 9
                                                             9

  Note:After installing memory, run the applicable batch file on your
  setup disk. This loads the

  appropriate values into the chipset.