MANDAX COMPUTER, INC.

286 MAINBOARD

Processor         80286
Processor Speed   6/12MHz
Chip Set          Unknown
Max. Onboard DRAM 4MB
SRAM Cache        None
BIOS              AMI
Dimensions        330.2mm x 218.4mm
I/O Options       None
NPU Options       80287

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  Digital CPU speed           J1        Speaker                    JP7
  display

  External battery            J15       Turbo LED                 JP10

  Power LED & keylock         JP4       Reset switch              JP11

  Turbo switch                JP5

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Monitor type select                    JP1             pins 1 & 2
      monochrome                                               closed

      Monitor type select color              JP1             pins 2 & 3
                                                               closed

  »   NPU disabled                           JP2             pins 2 & 3
                                                               closed

      NPU enabled                            JP2             pins 1 & 2
                                                               closed

  »   Factory configured - do not            JP3               closed
      alter

  »   RTC type select alkaline               JP6             pins 2 & 3
                                                               closed

      RTC type select lithium                JP6             pins 1 & 2
                                                               closed

  »   I/O speed select 6MHz                  JP8                open

      I/O speed select synchronous           JP8               closed
      with CPU clock

  »   Wait states select switchable          JP9             pins 1 & 2
      at keyboard                                              closed

      Wait state select one                  JP9                open

      Wait states select zero                JP9             pins 2 & 3
                                                               closed

  »   BIOS type select 27256                 JP12            pins 2 & 3
                                                               closed

      BIOS type select 27512                 JP12            pins 1 & 2
                                                               closed

  »   Monitor type select                SW1/switch 1           open
      monochrome

      Monitor type select color          SW1/switch 1          closed

                            DRAM CONFIGURATION

  Size     Bank 0      Bank 1     SW1/switch    SW1/switch   SW1/switch 4
                                      2             3

  512KB      (18)       NONE       closed        closed          open
            41256

  640KB      (18)       (18)       closed         open          closed
            41256       4164

   1MB       (18)       (18)       closed         open           open
            41256      41256

   2MB       (18)       NONE        open          open          closed
           411000

   4MB       (18)       (18)        open          open           open
           411000      411000