
COMPAQ COMPUTER CORPORATION

DESKPRO 386 (TYPE 'A')

Processor               80386DX
Processor Speed         16MHz
Chip Set                ETEQ
Max. Onboard DRAM       2MB (on system memory card)
Cache                   None
BIOS                    Compaq
Dimensions              330mm x 218mm
I/O Options             Proprietary system memory card slot, proprietary
                        external memory card slot (on system memory card)
NPU Options             80287

[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                   Location

  Fixed drive power       J109       Proprietary keyboard        J116
                                     plug

  Tape backup power       J110       Main power                  J117

  Floppy drive power      J111       External battery            J118

  Floppy drive power      J112       Keylock                     J119

  Monitor power           J113       Proprietary system           S1
                                     memory card

  Speaker                 J115

                        USER CONFIGURABLE SETTINGS

                 Function                     Switch         Position

     Fail-safe timer enabled                  SW1/1            On

      Fail-safe timer disabled                 SW1/1            Off

     NPU enabled                              SW1/2            On

      NPU disabled                             SW1/2            Off

     NPU type select 4MHz                     SW1/3            On

      NPU type select 8MHz                     SW1/3            Off

     CPU speed at boot automatic              SW1/4            On

     CPU speed at boot high                   SW1/4            Off

     Factory configured - do not alter        SW1/5            Off

     Monitor type select                      SW1/6            On
      dual-mode/color

      Monitor type select monochrome           SW1/6            Off
      other than Compaq

     Factory configured - do not alter        SW1/7            On

     Factory configured - do not alter        SW1/8            On

[Image]

                    CONNECTIONS

  Purpose                              Location

  Proprietary external memory card      S1 & S2

           DRAM CONFIGURATION

     Size        Bank 0        Bank 1

     1MB        (36) 41256      NONE

     2MB        (36) 41256   (36) 41256

                            DRAM CONFIGURATION

   Size    Base Memory    Ext. Memory      1MBExp.             J1
                                           Memory

   1MB        256KB         768KB         disabled       pins 1 & 2, 4 &
                                                         5, 7 & 8 closed

   1MB        512KB         512KB         disabled       pins 2 & 3, 4 &
                                                         5, 7 & 8 closed

   1MB        640KB         384KB         disabled       pins 2 & 3, 5 &
                                                         6, 7 & 8 closed

   2MB        256KB         768KB          enabled       pins 1 & 2, 4 &
                                                         5, 8 & 9 closed

   2MB        512KB         512KB          enabled       pins 2 & 3, 4 &
                                                         5, 8 & 9 closed

   2MB        640KB         384KB          enabled       pins 2 & 3, 5 &
                                                         6, 8 & 9 closed

  Note:Jumpers 3 & 4 and 6 & 7 should never be closed as serious damage
  to the system may result.

