
ABC COMPUTER COMPANY, LTD.

A3860

Processor         80386DX
Processor Speed   25/33MHz
Chip Set          Intel/VLSI
Max. Onboard DRAM 40MB
Cache             None
BIOS              AMI
Dimensions        330.2mm x 218.4mm
I/O Options       None
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             J6       Turbo LED                  J5

  Power LED & keylock          J2       Reset switch               J3

  Speaker                      J1       Turbo switch               J4

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     NPU type select 80387 or none             E2           pins 2 & 3
                                                              closed

      NPU type select 3167                      E2           pins 1 & 2
                                                              closed

     NPU mode select synchronous with          E3             Open
      CPU

      NPU mode select asynchronous with         E3            Closed
      CPU

     Pipeline mode enabled                     E4            Closed

      Pipeline mode disabled                    E4             Open

     Reset enabled                             E5           pins 2 & 3
                                                              closed

      Reset enabled only when keyboard          E5           pins 1 & 2
      is locked                                               closed

     CMOS memory normal operation              E6            Closed

      CMOS memory clear                         E6             Open

     CMOS memory normal operation              E7             Open

      CMOS memory clear                         E7            Closed

     BIOS type select 8-bit                    E8            Closed

      BIOS type select 16-bit                   E8             Open

     Factory configured - do not alter         E9             Open

     Monitor type select color                E10            Closed

      Monitor type select monochrome           E10             Open

                            DRAM CONFIGURATION

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

  1MB     1M       (8)        (4)      NONE       NONE     NONE     NONE
                  44256     41256

  1MB     1MS     NONE       NONE      NONE       NONE      (4)     NONE
                                                           256K
                                                           x 9

  2MB     2M       (8)        (4)       (8)        (4)     NONE     NONE
                  44256     41256      44256     41256

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

  3MB     3M       (8)        (4)       (8)        (4)      (4)     NONE
                  44256     41256      44256     41256     256K
                                                           x 9

  4MB     4MK      (8)        (4)       (8)        (4)      (4)      (4)
                  44256     41256      44256     41256     256K    256K x
                                                           x 9       9

  4MB     4MM      (8)        (4)      NONE       NONE     NONE     NONE
                 441000     411000

  5MB     5M       (8)        (4)       (8)        (4)     NONE     NONE
                  44256     41256     441000     411000

  6MB     6M       (8)        (4)       (8)        (4)      (4)     NONE
                  44256     41256      44256     41256     1M x
                                                            9

  8MB     8M       (8)        (4)       (8)        (4)     NONE     NONE
                 441000     411000    441000     411000

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

  9MB     9M       (8)        (4)       (8)        (4)      (4)     NONE
                 441000     411000    441000     411000    256K
                                                           x 9

  10MB    10M      (8)        (4)       (8)        (4)      (4)    (4) 1M
                  44256     41256      44256     41256     1M x     x 9
                                                            9

  12MB    12M      (8)        (4)       (8)        (4)      (4)     NONE
                 441000     411000    441000     411000    1M x
                                                            9

  16MB    16M      (8)        (4)       (8)        (4)      (4)    (4) 1M
                 441000     411000    441000     411000    1M x     x 9
                                                            9

  16MB   16MS     NONE       NONE      NONE       NONE      (4)     NONE
                                                           4M x
                                                            9

  18MB    18M      (8)        (4)       (8)        (4)      (4)     NONE
                  44256     41256      44256     41256     4M x
                                                            9

  24MB    24M      (8)        (4)       (8)        (4)      (4)     NONE
                 441000     411000    441000     411000    4M x
                                                            9

  32MB    32M     NONE       NONE      NONE       NONE      (4)    (4) 4M
                                                           4M x     x 9
                                                            9

  34MB    34M      (8)        (4)       (8)        (4)      (4)    (4) 4M
                  44256     41256      44256     41256     4M x     x 9
                                                            9

  40MB    40M      (8)        (4)       (8)        (4)      (4)    (4) 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.

