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       # COMPAQ COMPUTER CORPORATION
       
          PRESARIO 5500 SERIES
       
          Processor        Pentium                                       
          Processor Speed  75/90MHz                                      
          Chip Set         Unidentified                                  
          Video Chip Set   Unidentified                                  
          Maximum Onboard  72MB (EDO supported)                          
          Memory           
          Maximum Video    1MB                                           
          Memory           
          Cache            None                                          
          BIOS             Unidentified                                  
          Dimensions       254mm x 218mm                                 
          I/O Options      PS/2 mouse port, LPB/MPEG connector, parallel 
                           port, audio line out connector, audio line in 
                           connector, MGEG connector, feature connector, 
                           microphone in connector, speaker/headphone    
                           out connector, serial port, wavetable         
                           connector, game/MIDI port, MPEG audio         
                           connector, riser slot                         
          NPU Options      None                                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose        | Location | Purpose             | Location |
          |----------------+----------+---------------------+----------|
          | PS/2 mouse     |    J1    | Microphone in       |   J14    |
          | port           |          | connector           |          |
          |----------------+----------+---------------------+----------|
          | LPB/MPEG       |    J4    | Speaker/headphone   |   J16    |
          | connector      |          | out connector       |          |
          |----------------+----------+---------------------+----------|
          | Parallel port  |    J5    | Serial port         |   J17    |
          |----------------+----------+---------------------+----------|
          | Audio line out |    J7    | Wavetable connector |   J18    |
          | connector      |          |                     |          |
          |----------------+----------+---------------------+----------|
          | Audio line in  |    J9    | Game/MIDI port      |   J21    |
          | connector      |          |                     |          |
          |----------------+----------+---------------------+----------|
          | MPEG connector |   J10    | MPEG audio          |    P7    |
          |                |          | connector           |          |
          |----------------+----------+---------------------+----------|
          | External       |   J12    | Riser slot          |   SL1    |
          | battery        |          |                     |          |
          |----------------+----------+---------------------+----------|
          | Feature        |   J13    |                     |          |
          | connector      |          |                     |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               |  Label  |  Position  |
          |-------------------------------------+---------+------------|
          | ยป | CMOS memory normal operation    |   P1    |   Closed   |
          |---+---------------------------------+---------+------------|
          |   | CMOS memory clear               |   P1    |    Open    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |     Size      |     Bank 0      |          Bank 1          |
          |---------------+-----------------+--------------------------|
          |      8MB      |       8MB       |           None           |
          |---------------+-----------------+--------------------------|
          |     10MB      |       8MB       |      (2) 256K x 36       |
          |---------------+-----------------+--------------------------|
          |     12MB      |       8MB       |      (2) 512K x 36       |
          |---------------+-----------------+--------------------------|
          |     16MB      |       8MB       |       (2) 1M x 36        |
          |---------------+-----------------+--------------------------|
          |     24MB      |       8MB       |       (2) 2M x 36        |
          |---------------+-----------------+--------------------------|
          |     40MB      |       8MB       |       (2) 4M x 36        |
          |---------------+-----------------+--------------------------|
          |     72MB      |       8MB       |       (2) 8M x 36        |
          |------------------------------------------------------------|
          |      Note: Bank 0 is factory installed and is not          |
          |      configurable. The location is unidentified. Board     |
          |      also accepts x 32 SIMMs. Board accepts EDO memory.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          |            Size            |         VIDEO (J2/J3)         |
          |----------------------------+-------------------------------|
          |            2MB             |    Memory module installed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU BUS SPEED SELECTION                   |
          |------------------------------------------------------------|
          |        Clock speed         |              P3               |
          |----------------------------+-------------------------------|
          |           40MHz            |       Pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |           50MHz            |       Pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |           60MHz            |       Pins 3 & 4 closed       |
          |----------------------------+-------------------------------|
          |           66MHz            |       Pins 4 & 5 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU MULTIPLIER SELECTION                  |
          |------------------------------------------------------------|
          |         Multiplier         |              P2               |
          |----------------------------+-------------------------------|
          |            1.5x            | Pins A1 & A2, B1 & B2 closed  |
          |----------------------------+-------------------------------|
          |             2x             | Pins A2 & A3, B1 & B2 closed  |
          |----------------------------+-------------------------------|
          |            2.5x            | Pins A2 & A3, B2 & B3 closed  |
          |----------------------------+-------------------------------|
          |             3x             | Pins A1 & A2, B2 & B3 closed  |
          |------------------------------------------------------------|
          | Note: The location of A & B is unidentified.               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                MISCELLANEOUS TECHNICAL NOTE                |
          |------------------------------------------------------------|
          | The location of pin 1 on all jumpers and connectors is     |
          | unidentified.                                              |
          +------------------------------------------------------------+