
COMPAQ COMPUTER CORPORATION

PRESARIO 600 SERIES (486 WITH 4MB)

Processor       80486SX/80487SX/ODP486SX/80486DX/80486DX2
Processor Speed 25/33/50(internal)/66(internal)MHz
Chip Set        Unidentified
Max. Onboard    56MB
DRAM
Cache           None
BIOS            Unidentified
Dimensions      258mm x 218mm
I/O Options     Riser card slot, floppy drive interface, IDE interface,
                VGA port, serial ports (2), parallel port, PS/2 mouse port
NPU Options     80487

[Image]

                                CONNECTIONS

  Purpose                    Location   Purpose                  Location

  IDE interface                 J1      Serial port 1              P2

  External                      J5      Serial port 2              P3

  PS/2 mouse port               J7      VGA port                   P4

  Floppy drive interface        J8      Riser card slot            SL1

  Parallel port                 P1

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not              J2              N/A
      alter

     I/O address type select                 J13           pins 1 & 2
      398h/399h                                               closed

      I/O address type select                 J13           pins 1 & 2
      26Eh/26Fh                                               closed

     PGA CPU enabled                          P7              Open

      PGA CPU disabled                         P7           pins 2 & 3
                                                              closed

      PQFP CPU enabled                         P7              Open

     CMOS memory normal operation            P14           pins 1 & 2
                                                              closed

      CMOS memeory clear                      P14              Open

                            DRAM CONFIGURATION

    Size      Bank 0A      Bank 0      Bank 1       Bank 2       Bank 3

    4MB         4MB         NONE        NONE         NONE         NONE

    5MB         4MB      (1) 256K x     NONE         NONE         NONE
                             36

    6MB         4MB      (1) 256K x   (1) 256K x     NONE         NONE
                             36          36

    6MB         4MB      (1) 512K x     NONE         NONE         NONE
                             36

    7MB         4MB      (1) 256K x   (1) 256K x   (1) 256K x     NONE
                             36          36           36

    8MB         4MB      (1) 256K x   (1) 256K x   (1) 256K x  (1) 256K x
                             36          36           36           36

    8MB         4MB      (1) 512K x   (1) 512K x     NONE         NONE
                             36          36

    8MB         4MB       (1) 1M x      NONE         NONE         NONE
                             36

    10MB        4MB      (1) 512K x   (1) 512K x   (1) 512K x     NONE
                             36          36           36

    10MB        4MB      (1) 512K x   (1) 512K x   (1) 256K x  (1) 256K x
                             36          36           36           36

    10MB        4MB      (1) 256K x   (1) 256K x   (1) 512K x  (1) 512K x
                             36          36           36           36

    12MB        4MB      (1) 512K x   (1) 512K x   (1) 512K x  (1) 512K x
                             36          36           36           36

    12MB        4MB       (1) 1M x     (1) 1M x      NONE         NONE
                             36          36

    12MB        4MB       (1) 2M x      NONE         NONE         NONE
                             36

    14MB        4MB       (1) 1M x     (1) 1M x    (1) 256K x  (1) 256K x
                             36          36           36           36

    14MB        4MB      (1) 256K x   (1) 256K x    (1) 1M x    (1) 1M x
                             36          36           36           36

    16MB        4MB       (1) 1M x     (1) 1M x     (1) 1M x      NONE
                             36          36           36

    16MB        4MB       (1) 1M x     (1) 1M x    (1) 512K x  (1) 512K x
                             36          36           36           36

    16MB        4MB      (1) 512K x   (1) 512K x    (1) 1M x    (1) 1M x
                             36          36           36           36

    20MB        4MB       (1) 1M x     (1) 1M x     (1) 1M x    (1) 1M x
                             36          36           36           36

    20MB        4MB       (1) 2M x     (1) 2M x      NONE         NONE
                             36          36

    20MB        4MB       (1) 4M x      NONE         NONE         NONE
                             36

    22MB        4MB       (1) 2M x     (1) 2M x    (1) 256K x  (1) 256K x
                             36          36           36           36

    22MB        4MB      (1) 256K x   (1) 256K x    (1) 2M x    (1) 2M x
                             36          36           36           36

    24MB        4MB       (1) 2M x     (1) 2M x    (1) 512K x  (1) 512K x
                             36          36           36           36

    24MB        4MB      (1) 512K x   (1) 512K x    (1) 2M x    (1) 2M x
                             36          36           36           36

    28MB        4MB       (1) 2M x     (1) 2M x     (1) 2M x      NONE
                             36          36           36

    28MB        4MB       (1) 2M x     (1) 2M x     (1) 1M x    (1) 1M x
                             36          36           36           36

    28MB        4MB       (1) 1M x     (1) 1M x     (1) 2M x    (1) 2M x
                             36          36           36           36

    36MB        4MB       (1) 2M x     (1) 2M x     (1) 2M x    (1) 2M x
                             36          36           36           36

    36MB        4MB       (1) 4M x     (1) 4M x      NONE         NONE
                             36          36

    36MB        4MB       (1) 8M x      NONE         NONE         NONE
                             36

    38MB        4MB       (1) 4M x     (1) 4M x    (1) 256K x  (1) 256K x
                             36          36           36           36

  Note: Bank 0A is factory installed and not configurable.

                        DRAM CONFIGURATION (CONT)

    Size      Bank 0A      Bank 0      Bank 1       Bank 2       Bank 3

    38MB        4MB      (1) 256K x   (1) 256K x    (1) 4M x    (1) 4M x
                             36          36           36           36

    40MB        4MB       (1) 4M x     (1) 4M x    (1) 512K x  (1) 512K x
                             36          36           36           36

    40MB        4MB      (1) 512K x   (1) 512K x    (1) 4M x    (1) 4M x
                             36          36           36           36

    44MB        4MB       (1) 4M x     (1) 4M x     (1) 1M x    (1) 1M x
                             36          36           36           36

    44MB        4MB       (1) 1M x     (1) 1M x     (1) 4M x    (1) 4M x
                             36          36           36           36

    52MB        4MB       (1) 4M x     (1) 4M x     (1) 4M x      NONE
                             36          36           36

    52MB        4MB       (1) 4M x     (1) 4M x     (1) 2M x    (1) 2M x
                             36          36           36           36

    52MB        4MB       (1) 2M x     (1) 2M x     (1) 4M x    (1) 4M x
                             36          36           36           36

    56MB        4MB       (1) 4M x     (1) 4M x     (1) 4M x    (1) 1M x
                             36          36           36           36

  Note: Bank 0A is factory installed and not configurable.

                          CPU TYPE CONFIGURATION

       Type                P9                P10               P11

   80486SX (PGA)       pins 1 & 2         pins 1 & 2        pins 3 & 4
                         closed            closed             closed

  80486SX (PQFP)       pins 2 & 3         pins 1 & 2        pins 3 & 4
                         closed            closed             closed

      80487SX          pins 1 & 2         pins 2 & 3        pins 2 & 3
                         closed            closed             closed

      80486DX          pins 1 & 2         pins 2 & 3        pins 1 & 2
                         closed            closed             closed

     80486DX2          pins 1 & 2         pins 2 & 3        pins 1 & 2
                         closed            closed             closed

         CPU SPEED CONFIGURATION

      CPU speed               P8

        25MHz         pins 2 & 3 closed

        33MHz         pins 1 & 2 closed

       50iMHz         pins 2 & 3 closed

       66iMHz         pins 1 & 2 closed

                 ON-BOARD VIDEO CONFIGURATION

       Setting                P5                   P6

      Disabled               Open                 Open

       Enabled         pins 1 & 2 closed   pins 1 & 2 closed

