
ACER, INC.

RT-286-12/16

Processor         80286
Processor Speed   12/16MHz
Chip Set          Acer
Max. Onboard DRAM 6MB
Cache             None
BIOS              Unidentified
Dimensions        254mm x 218mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Speaker                     J1       Turbo switch                J4

  Turbo LED                   J2       Power LED & keylock         J5

  Reset switch                J3       External battery            J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     NPU synchronous with CPU                 JP1           pins 1 & 2
                                                              closed

      NPU asynchronous with CPU                JP1           pins 2 & 3
                                                              closed

     I/O bus speed select ATCLK               JP2            Closed

      I/O bus speed select ATCLK/2             JP2             Open

     Factory configured - do not alter        JP3            Closed

     Parity enabled                           JP4             Open

      Parity disabled                          JP4            Closed

     BIOS type select 27512                   JP5           pins 1 & 2
                                                              closed

      BIOS type select 27256                   JP5           pins 2 & 3
                                                              closed

     Monitor type select monochrome           JP6           pins 1 & 2
                                                              closed

      Monitor type select color                JP6           pins 2 & 3
                                                              closed

     Battery type select internal             JP7           pins 1 & 2
                                                              closed

      Battery type select external             JP7           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

   Size     Bank 0     Parity 0   Bank 1     Parity 1   Bank 2    Bank 3

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

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

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

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

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

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

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

