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       # COMPAQ COMPUTER CORPORATION
       
          PRESARIO CDS 774/972/974/982/992
       
          PRESARIO CDTV 978
       
          Processor    Pentium                                           
          Processor    75/90/100MHz                                      
          Speed        
          Chip Set     Unidentified                                      
          Max. Onboard 136MB                                             
          DRAM         
          Cache        256KB                                             
          BIOS         Unidentified                                      
          Dimensions   330mm x 218mm                                     
          I/O Options  Parallel port, PS/2 mouse port, serial ports (2), 
                       VGA feature connector, VGA port, modem port,      
                       CD-ROM audio connector, modem audio connector,    
                       video memory interface                            
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose         | Location | Purpose            | Location |
          |-----------------+----------+--------------------+----------|
          | VGA port        |   CN1    | Video memory       | J4, J12  |
          |                 |          | connector          |          |
          |-----------------+----------+--------------------+----------|
          | PS/2 mouse port |   CN2    | External battery   |    J5    |
          |-----------------+----------+--------------------+----------|
          | Keyboard port   |   CN3    | Modem audio        |    J7    |
          |                 |          | connector          |          |
          |-----------------+----------+--------------------+----------|
          | Modem port      |   CN4    | CD-ROM audio       |   J10    |
          |                 |          | connector          |          |
          |-----------------+----------+--------------------+----------|
          | Modem port      |   CN5    | Serial port 2      |   J14    |
          |-----------------+----------+--------------------+----------|
          | Serial port 1   |   CN6    | VGA feature        |   J20    |
          |                 |          | connector          |          |
          |-----------------+----------+--------------------+----------|
          | Parallel port   |   CN7    |                    |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Factory configured - do not      |  J16   |    N/A     |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |   P2   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |   P2   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Password enabled                 |   P3   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Password disabled                |   P3   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | CPU core to bus ratio speed      |  P11   | pins 1 & 2 |
          |   | select 1.5x                      |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CPU core to bus ratio speed      |  P11   | pins 2 & 3 |
          |   | select 2x                        |        |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            DRAM CONFIGURATION (75MHZ CPU ONLY)             |
          |------------------------------------------------------------|
          |   Size    |   Bank 0A   |     Bank 0      |     Bank 1     |
          |-----------+-------------+-----------------+----------------|
          |   20MB    |    12MB     |   (2) 1M x 36   |      NONE      |
          |-----------+-------------+-----------------+----------------|
          |   28MB    |    12MB     |   (2) 1M x 36   |  (2) 1M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   28MB    |    12MB     |   (2) 2M x 36   |      NONE      |
          |-----------+-------------+-----------------+----------------|
          |   36MB    |    12MB     |   (2) 1M x 36   |  (2) 2M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   36MB    |    12MB     |   (2) 2M x 36   |  (2) 1M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   44MB    |    12MB     |   (2) 2M x 36   |  (2) 2M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   44MB    |    12MB     |   (2) 4M x 36   |      NONE      |
          |-----------+-------------+-----------------+----------------|
          |   52MB    |    12MB     |   (2) 1M x 36   |  (2) 4M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   52MB    |    12MB     |   (2) 4M x 36   |  (2) 1M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   60MB    |    12MB     |   (2) 2M x 36   |  (2) 4M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   60MB    |    12MB     |   (2) 4M x 36   |  (2) 2M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   76MB    |    12MB     |   (2) 4M x 36   |  (2) 4M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   76MB    |    12MB     |   (2) 8M x 36   |      NONE      |
          |-----------+-------------+-----------------+----------------|
          |   84MB    |    12MB     |   (2) 1M x 36   |  (2) 8M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   84MB    |    12MB     |   (2) 8M x 36   |  (2) 1M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   92MB    |    12MB     |   (2) 2M x 36   |  (2) 8M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   92MB    |    12MB     |   (2) 8M x 36   |  (2) 2M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   108MB   |    12MB     |   (2) 4M x 36   |  (2) 8M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   108MB   |    12MB     |   (2) 8M x 36   |  (2) 4M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   136MB   |    12MB     |   (2) 8M x 36   |  (2) 8M x 36   |
          |------------------------------------------------------------|
          | Note: Bank 0A is factory installed and is not              |
          | configurable. Only 8MB of the onboard memory is used when  |
          | 136MB is installed.                                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |      DRAM CONFIGURATION (75MHZ & 90MHZ CPU ONLY)       |
          |------------------------------------------------------------|
          |    Size     |   Bank 0A    |    Bank 0     |    Bank 1     |
          |-------------+--------------+---------------+---------------|
          |    16MB     |     8MB      |  (2) 1M x 36  |     NONE      |
          |-------------+--------------+---------------+---------------|
          |    24MB     |     8MB      |  (2) 1M x 36  |  (2) 1M x 36  |
          |-------------+--------------+---------------+---------------|
          |    24MB     |     8MB      |  (2) 2M x 36  |     NONE      |
          |-------------+--------------+---------------+---------------|
          |    32MB     |     8MB      |  (2) 1M x 36  |  (2) 2M x 36  |
          |-------------+--------------+---------------+---------------|
          |    32MB     |     8MB      |  (2) 2M x 36  |  (2) 1M x 36  |
          |-------------+--------------+---------------+---------------|
          |    40MB     |     8MB      |  (2) 2M x 36  |  (2) 2M x 36  |
          |-------------+--------------+---------------+---------------|
          |    40MB     |     8MB      |  (2) 4M x 36  |     NONE      |
          |-------------+--------------+---------------+---------------|
          |    48MB     |     8MB      |  (2) 1M x 36  |  (2) 4M x 36  |
          |-------------+--------------+---------------+---------------|
          |    48MB     |     8MB      |  (2) 4M x 36  |  (2) 1M x 36  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |   DRAM CONFIGURATION (75MHZ & 90MHZ CPU ONLY CON’T)    |
          |------------------------------------------------------------|
          |    Size    |   Bank 0A    |     Bank 0     |    Bank 1     |
          |------------+--------------+----------------+---------------|
          |    56MB    |     8MB      |  (2) 2M x 36   |  (2) 4M x 36  |
          |------------+--------------+----------------+---------------|
          |    56MB    |     8MB      |  (2) 4M x 36   |  (2) 2M x 36  |
          |------------+--------------+----------------+---------------|
          |    72MB    |     8MB      |  (2) 4M x 36   |  (2) 4M x 36  |
          |------------+--------------+----------------+---------------|
          |    72MB    |     8MB      |  (2) 8M x 36   |     NONE      |
          |------------+--------------+----------------+---------------|
          |    80MB    |     8MB      |  (2) 1M x 36   |  (2) 8M x 36  |
          |------------+--------------+----------------+---------------|
          |    80MB    |     8MB      |  (2) 8M x 36   |  (2) 1M x 36  |
          |------------+--------------+----------------+---------------|
          |    88MB    |     8MB      |  (2) 2M x 36   |  (2) 8M x 36  |
          |------------+--------------+----------------+---------------|
          |    88MB    |     8MB      |  (2) 8M x 36   |  (2) 2M x 36  |
          |------------+--------------+----------------+---------------|
          |   104MB    |     8MB      |  (2) 4M x 36   |  (2) 8M x 36  |
          |------------+--------------+----------------+---------------|
          |   104MB    |     8MB      |  (2) 8M x 36   |  (2) 4M x 36  |
          |------------+--------------+----------------+---------------|
          |   136MB    |     8MB      |  (2) 8M x 36   |  (2) 8M x 36  |
          |------------------------------------------------------------|
          | Note: Bank 0A is factory installed and is not              |
          | configurable.                                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            DRAM CONFIGURATION (100MHZ CPU ONLY)            |
          |------------------------------------------------------------|
          |   Size    |   Bank 0A   |     Bank 0      |     Bank 1     |
          |-----------+-------------+-----------------+----------------|
          |   24MB    |    16MB     |   (2) 1M x 36   |      NONE      |
          |-----------+-------------+-----------------+----------------|
          |   32MB    |    16MB     |   (2) 1M x 36   |  (2) 1M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   32MB    |    16MB     |   (2) 2M x 36   |      NONE      |
          |-----------+-------------+-----------------+----------------|
          |   40MB    |    16MB     |   (2) 1M x 36   |  (2) 2M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   40MB    |    16MB     |   (2) 2M x 36   |  (2) 1M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   48MB    |    16MB     |   (2) 2M x 36   |  (2) 2M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   48MB    |    16MB     |   (2) 4M x 36   |      NONE      |
          |-----------+-------------+-----------------+----------------|
          |   56MB    |    16MB     |   (2) 1M x 36   |  (2) 4M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   56MB    |    16MB     |   (2) 4M x 36   |  (2) 1M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   64MB    |    16MB     |   (2) 2M x 36   |  (2) 4M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   64MB    |    16MB     |   (2) 4M x 36   |  (2) 2M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   80MB    |    16MB     |   (2) 4M x 36   |  (2) 4M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   80MB    |    16MB     |   (2) 8M x 36   |      NONE      |
          |-----------+-------------+-----------------+----------------|
          |   88MB    |    16MB     |   (2) 1M x 36   |  (2) 8M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   88MB    |    16MB     |   (2) 8M x 36   |  (2) 1M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   96MB    |    16MB     |   (2) 2M x 36   |  (2) 8M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   96MB    |    16MB     |   (2) 8M x 36   |  (2) 2M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   112MB   |    16MB     |   (2) 4M x 36   |  (2) 8M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   112MB   |    16MB     |   (2) 8M x 36   |  (2) 4M x 36   |
          |-----------+-------------+-----------------+----------------|
          |   136MB   |    16MB     |   (2) 8M x 36   |  (2) 8M x 36   |
          |------------------------------------------------------------|
          | Note: Bank 0A is factory installed and is not              |
          | configurable. Only 8MB of the onboard memory is used when  |
          | 136MB is installed.                                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          | Note: This board is factory installed with 256KB. It is    |
          | not configurable.                                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU BUS SPEED CONFIGURATION                 |
          |------------------------------------------------------------|
          |           Speed            |              P5               |
          |----------------------------+-------------------------------|
          |           50MHz            |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |           60MHz            |       pins 1 & 2 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          | Note: To upgrade video memory, install video module on     |
          | jumpers J4 & J12.                                          |
          +------------------------------------------------------------+