
COMPAQ COMPUTER CORPORATION

DeskPro 486/50L (Model 001987)

Processor         80486DX
Processor Speed   50MHz
Chip Set          Compaq
Max. Onboard DRAM 104MB (on system memory card)
Cache             None
BIOS              Compaq
Dimensions        332mm x 333mm
I/O Options       32-bit system memory card slot
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  Bus mouse                 C1         5.25 inch floppy          FD2
                                       drive interface

  Parallel port             C2         IDE interface             HDD

  Serial port 1             C3         System memory card        MEM

  VGA port                  C4         Drive power              P1-P5

  Main power               DCIN        VGA feature               VGA
                                       interface

  3.5 inch floppy           FD1
  drive interface

                        USER CONFIGURABLE SETTINGS

                 Function                      Switch         Position

     Factory configured - do not alter        SW1/1            Off

     EISA configuration unlocked              SW1/2            Off

      EISA configuration locked                SW1/2             On

     Floppy drive write enabled               SW1/3            Off

      Floppy drive write disabled              SW1/3             On

     Boot drive select determined by          SW1/4            Off
      EISA configuration

      Boot drive select floppy drive           SW1/4             On

     Password check at power-on enabled       SW1/5            Off

      Password check at power-on disabled      SW1/5             On
      and cleared

     EISA configuration enabled               SW1/6            Off

      EISA configuration disabled              SW1/6             On

SYSTEM MEMORY BOARD (Model 1990)

[Image]

                                  DRAM CONFIGURATION

  Size   M0           M1            M2           M3            M4           M5

  4MB    NONE        NONE          NONE         NONE          NONE         NONE

  6MB    2MB         NONE          NONE         NONE          NONE         NONE

  8MB    2MB          2MB          NONE         NONE          NONE         NONE

  10MB   2MB          2MB          2MB          NONE          NONE         NONE

  12MB   2MB          2MB          2MB           2MB          NONE         NONE

  12MB   8MB         NONE          NONE         NONE          NONE         NONE

  12MB   8MB   -----------------   NONE         NONE          NONE         NONE

  14MB   2MB          2MB          2MB           2MB          2MB          NONE

  14MB   8MB          2MB          NONE         NONE          NONE         NONE

  14MB   8MB   -----------------   2MB          NONE          NONE         NONE

  16MB   2MB          2MB          2MB           2MB          2MB          2MB

  16MB   8MB          2MB          2MB          NONE          NONE         NONE

  16MB   8MB   -----------------   2MB           2MB          NONE         NONE

  18MB   8MB          2MB          2MB           2MB          NONE         NONE

  18MB   8MB   -----------------   2MB           2MB          2MB          NONE

  20MB   8MB          2MB          2MB           2MB          2MB          NONE

  20MB   8MB   -----------------   2MB           2MB          2MB          2MB

  20MB   8MB          8MB          NONE         NONE          NONE         NONE

  20MB   8MB   -----------------   8MB          NONE          NONE         NONE

  20MB   8MB   -----------------   8MB    -----------------   NONE         NONE

  22MB   8MB          2MB          2MB           2MB          2MB          2MB

  22MB   8MB          8MB          2MB          NONE          NONE         NONE

  22MB   8MB   -----------------   8MB           2MB          NONE         NONE

  22MB   8MB   -----------------   8MB    -----------------   2MB          NONE

  24MB   8MB          8MB          2MB           2MB          NONE         NONE

  24MB   8MB   -----------------   8MB           2MB          2MB          NONE

  24MB   8MB   -----------------   8MB    -----------------   2MB          2MB

  26MB   8MB          8MB          2MB           2MB          2MB          NONE

  26MB   8MB   -----------------   8MB           2MB          2MB          2MB

  28MB   8MB          8MB          2MB           2MB          2MB          2MB

  28MB   8MB          8MB          8MB          NONE          NONE         NONE

  28MB   8MB   -----------------   8MB           8MB          NONE         NONE

  28MB   8MB   -----------------   8MB    -----------------   8MB          NONE

  28MB   8MB   -----------------   8MB    -----------------   8MB    -----------------

  30MB   8MB          8MB          8MB           2MB          NONE         NONE

  30MB   8MB   -----------------   8MB           8MB          2MB          NONE

  30MB   8MB   -----------------   8MB    -----------------   8MB          2MB

  32MB   8MB          8MB          8MB           2MB          2MB          NONE

  32MB   8MB   -----------------   8MB           8MB          2MB          2MB

  34MB   8MB          8MB          8MB           2MB          2MB          2MB

  36MB   8MB          8MB          8MB           8MB          NONE         NONE

                                         DRAM CONFIGURATION

  Size    M0           M1            M2           M3                  M4                  M5

  36MB    8MB   -----------------   8MB           8MB                 8MB                NONE

  36MB    8MB   -----------------   8MB    -----------------          8MB                8MB

  36MB    32MB  -----------------   NONE         NONE                NONE                NONE

  38MB    8MB          8MB          8MB           8MB                 2MB                NONE

  38MB    8MB   -----------------   8MB           8MB                 8MB                2MB

  38MB    32MB  -----------------   2MB          NONE                NONE                NONE

  40MB    8MB          8MB          8MB           8MB                 2MB                2MB

  40MB    32MB  -----------------   2MB           2MB                NONE                NONE

  44MB    8MB          8MB          8MB           8MB                 8MB                NONE

  44MB    8MB   -----------------   8MB           8MB                 8MB                8MB

  44MB    32MB  -----------------   2MB           2MB                 2MB                2MB

  44MB    32MB  -----------------   8MB          NONE                NONE                NONE

  44MB    32MB  -----------------   8MB    -----------------         NONE                NONE

  46MB    8MB          8MB          8MB           8MB                 8MB                2MB

  46MB    32MB  -----------------   8MB           2MB                NONE                NONE

  46MB    32MB  -----------------   8MB    -----------------          2MB                NONE

  52MB    8MB          8MB          8MB           8MB                 8MB                8MB

  52MB    32MB  -----------------   8MB           8MB                NONE                NONE

  52MB    32MB  -----------------   8MB    -----------------          8MB          -----------------

  54MB    32MB  -----------------   8MB           8MB                 2MB                NONE

  54MB    32MB  -----------------   8MB           8MB          -----------------         2MB

  56MB    32MB  -----------------   8MB           8MB                 2MB                2MB

  60MB    32MB  -----------------   8MB           8MB                 8MB                NONE

  60MB    32MB  -----------------   8MB    -----------------          8MB                8MB

  62MB    32MB  -----------------   8MB           8MB                 8MB                2MB

  68MB    32MB  -----------------   8MB           8MB                 8MB                8MB

  68MB    32MB  -----------------   32MB   -----------------         NONE                NONE

  70MB    32MB  -----------------   32MB   -----------------          2MB                NONE

  72MB    32MB  -----------------   32MB   -----------------          2MB                2MB

  76MB    32MB  -----------------   32MB   -----------------          8MB                NONE

  76MB    32MB  -----------------   32MB   -----------------          8MB          -----------------

  78MB    32MB  -----------------   32MB   -----------------          8MB                2MB

  84MB    32MB  -----------------   32MB   -----------------          8MB                8MB

  100MB   32MB  -----------------   32MB   -----------------         32MB          -----------------

  Note: The system memory card uses proprietary memory modules, some require only one module space
  on the memory board, while others require two. In the cases where a double size module is used,
  the following space is marked with "-----------------", designating that space as occupied.

