COMPAQ COMPUTER CORPORATION
===========================

   PRESARIO 500 SERIES

   Processor    80487SX/80486DX/80486DX2                          
   Processor    25/33/50(internal)/66(internal)MHz                
   Speed        
   Chip Set     Compaq                                            
   Max. Onboard 64MB                                              
   DRAM         
   Cache        None                                              
   BIOS         Unidentifed                                       
   Dimensions   330mm x 218mm                                     
   I/O Options  Game port, parallel port, PS/2 mouse port, serial 
                port, microphone port, headphone port, line in    
                port, line out port, modem port, telephone port,  
                VESA feature connector                            
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/C-D/32402-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose         | Location | Purpose            | Location |
   |-----------------+----------+--------------------+----------|
   | PS/2 mouse port |   CN1    | Line in port       |   CN8    |
   |-----------------+----------+--------------------+----------|
   | Game port       |   CN2    | Modem port         |   CN9    |
   |-----------------+----------+--------------------+----------|
   | Parallel port   |   CN3    | Telephone port     |   CN10   |
   |-----------------+----------+--------------------+----------|
   | Serial port     |   CN4    | VESA feature       |    J8    |
   |                 |          | connector          |          |
   |-----------------+----------+--------------------+----------|
   | Microphone port |   CN5    | External battery   |   J11    |
   |-----------------+----------+--------------------+----------|
   | Headphone port  |   CN6    | Riser Card         |   SL1    |
   |-----------------+----------+--------------------+----------|
   | Line out port   |   CN7    |                    |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | TV board I/O address select      |  J16   | pins 1 & 2 |
   |   | B18/B19                          |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | TV board I/O address select      |  J16   | pins 2 & 3 |
   |   | B28/B29                          |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory clear                |   P5   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory normal operation     |   P5   |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       4MB        |    (1) 1M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |    (1) 2M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       12MB       |    (1) 1M x 36     |    (1) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (1) 2M x 36     |    (1) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (1) 4M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |    (1) 1M x 36     |    (1) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (1) 2M x 36     |    (1) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (1) 4M x 36     |    (1) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (1) 4M x 36     |    (1) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (1) 8M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       36MB       |    (1) 1M x 36     |    (1) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (1) 2M x 36     |    (1) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (1) 8M x 36     |    (1) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (1) 4M x 36     |    (1) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (1) 8M x 36     |    (1) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (1) 8M x 36     |    (1) 8M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |            Type            |              P2               |
   |----------------------------+-------------------------------|
   |          80486SX           |       pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |          80486DX           |       pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |          80487SX           |       pins 2 & 3 closed       |
   |----------------------------+-------------------------------|
   |          80486DX2          |       pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  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       |
   +------------------------------------------------------------+