
COMPAQ COMPUTER CORPORATION

PRESARIO 700/900 SERIES

Processor  80486SX2/80486DX/80486DX2/80486DX4/Pentium Overdrive
Processor  25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Compaq
Max.       100MB
Onboard
DRAM
Cache      128KB (on external cache card)
BIOS       Unidentified
Dimensions 330mm x 218mm
I/O        External cache card, game port, parallel port, PS/2 mouse port,
Options    serial ports (2), VGA feature connector, line in port, line out
           port, microphone port, VGA port, CD-ROM line in, TV board line
           in
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Parallel port               CN1      VGA port                   CN10

  Game port                   CN2      Serial port 2               J2

  Line in port                CN3      Video upgrade             J4 & J6
                                       interface

  Line out port               CN4      CD-ROM line in              J10

  Microphone port             CN5      External battery            J11

  Speaker                     CN6      TV board line in            J16

  PS/2 mouse port             CN7      VGA feature connector       J20

  Keyboard                    CN8      External cache card         SL1

  Serial port 1               CN9

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not              J7              Open
      alter

     Cache type select write through          P3           pins 1 & 2
                                                              closed

      Cache type select write back             P3           pins 2 & 3
                                                              closed

     CMOS memory normal operation             P5             Closed

      CMOS memory clear                        P5              Open

                           DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     4MB        (8) 411000        NONE           NONE          NONE

     8MB        (8) 411000    (1) 1M x 36        NONE          NONE

     12MB       (8) 411000    (1) 1M x 36    (1) 1M x 36       NONE

     12MB       (8) 411000    (1) 2M x 36        NONE          NONE

     16MB       (8) 411000    (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

     16MB       (8) 411000    (1) 1M x 36    (1) 2M x 36       NONE

     16MB       (8) 411000    (1) 2M x 36    (1) 1M x 36       NONE

     20MB       (8) 411000    (1) 2M x 36    (1) 1M x 36    (1) 1M x 36

     20MB       (8) 411000    (1) 2M x 36    (1) 2M x 36       NONE

     20MB       (8) 411000    (1) 4M x 36        NONE          NONE

     24MB       (8) 411000    (1) 1M x 36    (1) 2M x 36    (1) 2M x 36

     24MB       (8) 411000    (1) 1M x 36    (1) 4M x 36       NONE

     24MB       (8) 411000    (1) 4M x 36    (1) 1M x 36       NONE

     28MB       (8) 411000    (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

     28MB       (8) 411000    (1) 2M x 36    (1) 4M x 36       NONE

     28MB       (8) 411000    (1) 4M x 36    (1) 1M x 36    (1) 1M x 36

     28MB       (8) 411000    (1) 4M x 36    (1) 2M x 36       NONE

     36MB       (8) 411000    (1) 4M x 36    (1) 2M x 36    (1) 2M x 36

     36MB       (8) 411000    (1) 8M x 36        NONE          NONE

     40MB       (8) 411000    (1) 1M x 36    (1) 4M x 36    (1) 4M x 36

     40MB       (8) 411000    (1) 1M x 36    (1) 8M x 36       NONE

     40MB       (8) 411000    (1) 8M x 36    (1) 1M x 36       NONE

     44MB       (8) 411000    (1) 2M x 36    (1) 4M x 36    (1) 4M x 36

     44MB       (8) 411000    (1) 2M x 36    (1) 8M x 36       NONE

     44MB       (8) 411000    (1) 8M x 36    (1) 1M x 36    (1) 1M x 36

     44MB       (8) 411000    (1) 8M x 36    (1) 2M x 36       NONE

     52MB       (8) 411000    (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     52MB       (8) 411000    (1) 4M x 36    (1) 8M x 36       NONE

     52MB       (8) 411000    (1) 8M x 36    (1) 2M x 36    (1) 2M x 36

     52MB       (8) 411000    (1) 8M x 36    (1) 4M x 36       NONE

     68MB       (8) 411000    (1) 4M x 36    (1) 4M x 36       NONE

     68MB       (8) 411000    (1) 8M x 36    (1) 4M x 36    (1) 4M x 36

     68MB       (8) 411000    (1) 8M x 36    (1) 8M x 36       NONE

     72MB       (8) 411000    (1) 1M x 36    (1) 8M x 36    (1) 8M x 36

     76MB       (8) 411000    (1) 2M x 36    (1) 8M x 36    (1) 8M x 36

     84MB       (8) 411000    (1) 4M x 36    (1) 8M x 36    (1) 8M x 36

    100MB       (8) 411000    (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

  Note: Bank 0 is factory installed 4MB and is not configurable.

         CPU SPEED CONFIGURATION

        Speed                 P1

        25MHz         pins 1 & 2 closed

        33MHz         pins 2 & 3 closed

       50iMHz         pins 1 & 2 closed

       66iMHz         pins 2 & 3 closed

       75iMHz         pins 1 & 2 closed

       100iMHz        pins 2 & 3 closed

  CPU CLOCK SPEED CONFIGURATION (80486DX4)

        Speed                   P4

         2.0x            pins 2 & 3 closed

         2.5x            pins 1 & 2 closed

         3.0x            pins 3 & 4 closed

