
SINGA

286/12

Processor         80286
Processor Speed   12/16/20MHz
Chip Set          C & T
Max. Onboard DRAM 1MB
Cache             None
BIOS              Phoenix
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Turbo switch                J1       Power LED & keylock         J6

  External battery            J3       Reset switch                J15

  Speaker                     J5       Turbo LED                   J16

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

     CPU speed select 12MHz                 J1              pins 1 & 2
                                                               closed

      CPU speed select 8MHz                  J1              pins 2 & 3
                                                               closed

     CPU Speed select switchable            J2              pins 1 & 2
      at turbo switch                                          closed

      CPU Speed select switchable            J2              pins 2 & 3
      at keyboard                                              closed

     DMA clock speed select                 J4              pins 2 & 3
      iOSC/2                                                   closed

      DMA clock speed select                 J4              pins 1 & 2
      iOSC/1                                                   closed

     DRAM access speed select               J10             pins 1 & 2
      8MHz                                                     closed

      DRAM access speed select               J10             pins 2 & 3
      12MHz                                                    closed

     BIOS access speed select               J11             pins 2 & 3
      8MHz                                                     closed

      BIOS access speed select               J11             pins 1 & 2
      12MHz                                                    closed

     DMA clock slow down enabled            J12             pins 1 & 2
                                                               closed

      DMA clock slow down disabled           J12             pins 2 & 3
                                                               closed

     Keyboard controller speed              J13             pins 1 & 2
      select 8MHz                                              closed

      Keyboard controller speed              J13             pins 2 & 3
      select 4MHz                                              closed

     NPU speed select 8MHz                  J14             pins 2 & 3
                                                               closed

      NPU speed select 4.77MHz               J14             pins 1 & 2
                                                               closed

     Battery type select internal           J17               Closed

      Battery type select external           J17                Open

     Battery charge mode select             J18                Open
      normal

      Battery charge mode select             J18               Closed
      fast

     Monitor type select color             S1/3                 On

      Monitor type select                   S1/3                Off
      monochrome

           DRAM CONFIGURATION

     Size        Bank 0        Bank 1

    256KB       (18) 4164    (18) 4164

    512KB       (18) 41256      NONE

    640KB       (18) 41256   (18) 4164

     1MB        (18) 41256   (18) 41256

                         DRAM SWITCH CONFIGURATION

        Size               S1/1              S1/2              S1/4

       256KB                On                On                Off

       512KB               Off                On                Off

       640KB                On               Off                Off

  1MB (512KB base)         Off               Off                Off

  1MB (640KB base)         Off               Off                On

