
COMPAQ COMPUTER CORPORATION

DeskPro 486/25 (Model 001532)

Processor                 80486DX
Processor Speed           25MHz
Chip Set                  Compaq
Max. Onboard DRAM         100MB (on system memory card)
Cache                     None
BIOS                      Compaq
Dimensions                332mm x 333mm
I/O Options               32-bit system memory card slot, floppy drive
                          interfaces (2)
NPU Options               4167

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  Bus mouse                 C1         3.5 inch floppy           FD2
                                       drive interface

  Parallel port             C2         Drive access LED          LED

  Serial port 1             C3         System memory card        MEM

  VGA port                  C4         Drive power              P1-P6

  Main power               DCIN        Speaker                   SPK

  Fan power                 FAN        VGA feature               VGA
                                       interface

  5.25 inch floppy          FD1
  drive interface

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

     Maintenece mode disabled                  E1           pins 2 & 3
                                                              closed

      Maintenance mode enabled                  E1           pins 1 & 2
                                                              closed

     Password check at power-on                E2           pins 2 & 3
      enabled                                                 closed

      Password check at power-on                E2           pins 1 & 2
      disabled                                                closed

     VGA port enabled                          E3           pins 2 & 3
                                                              closed

      VGA port disabled                         E3           pins 1 & 2
                                                              closed

     Local bus hidden refresh enabled          E4           pins 2 & 3
                                                              closed

      Local bus hidden refresh disabled         E4           pins 1 & 2
                                                              closed

  Note:Not all jumpers are present on all board revisions.

SYSTEM MEMORY CARD (Model 1508)

[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

                              DRAM CONFIGURATION (CON'T)

  Size   M0           M1            M2           M3            M4           M5

  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

  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

                                     DRAM CONFIGURATION (CON'T)

  Size    M0           M1            M2           M3                  M4                  M5

  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 is factory configured with 4MB of DRAM on board. 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.

