RAVEN SERVICE WORKS
===================

   DPC-4434

   Processor    80486SX/80487SX/80486DX/ODP486SX/80486DX2         
   Processor    20/25/33/50(internal)/50/66(internal) MHz         
   Speed        
   Chip Set     Unknown                                           
   Max. Onboard 32MB                                              
   DRAM         
   Cache        None                                              
   BIOS         Unknown                                           
   Dimensions   330mm x 218mm                                     
   I/O Options  Floppy drive interface, IDE interface,            
                multi-function connector (power LED, turbo        
                SW1itch, keylock, and reset), parallel port, PS/2 
                keyboard connector, PS/2 mouse port, serial       
                port,VGA feature connector, VGA port              
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/P-R/31497-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Multi-function      |    C1    | PS/2 mouse     |    MC    |
   | connector           |          | port           |          |
   |---------------------+----------+----------------+----------|
   | Speaker             |    C2    | Parallel port  |    PC    |
   |---------------------+----------+----------------+----------|
   | IDE interface LED   |    C3    | Riser Card     |    S1    |
   |---------------------+----------+----------------+----------|
   | Floppy drive        |   FDC    | Serial port    |    SC    |
   | interface           |          |                |          |
   |---------------------+----------+----------------+----------|
   | IDE interface       |   IDE    | VGA port       |    VC    |
   |---------------------+----------+----------------+----------|
   | PS/2 keyboard port  |    KC    | VGA feature    |   VGA    |
   |                     |          | connector      |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | PS/2 mouse port enabled   |      JP5      | pins 1 & 2 |
   |   | (IRQ12)                   |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | PS/2 mouse port disabled  |      JP5      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Monitor type select color |     SW1/2     |     On     |
   |---+---------------------------+---------------+------------|
   |   | Monitor type select       |     SW1/2     |    Off     |
   |   | monochrome                |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    DRAM CONFIGURAPTION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       5MB        |     (4) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                ONBOARD VIDEO CONFIGURATION                 |
   |------------------------------------------------------------|
   |   VRAM size    |  Bank 0  |    Bank 1    | SW1/1  | SW1/3  |
   |----------------+----------+--------------+--------+--------|
   |>> |   512KB    |  512KB   |     None     |   On   |   On   |
   |---+------------+----------+--------------+--------+--------|
   |   |   1024KB   |  512KB   | (4) 256K x 4 |   On   |  Off   |
   |---+------------+----------+--------------+--------+--------|
   |   |  Disabled  |   N/A    |     N/A      |  Off   |  N/A   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             800 X 600 VIDEO MODE CONFIGURATION             |
   |------------------------------------------------------------|
   |   Refresh Rate    |     Mode      |   SW1/6    |   SW1/7   |
   |-------------------+---------------+------------+-----------|
   |>>   |    56Hz     |  Interlaced   |    Off     |    Off    |
   |-----+-------------+---------------+------------+-----------|
   |     |    60Hz     |  Interlaced   |     On     |    Off    |
   |-----+-------------+---------------+------------+-----------|
   |     |    70Hz     |  Interlaced   |    Off     |    On     |
   |-----+-------------+---------------+------------+-----------|
   |     |    72Hz     |  Interlaced   |     On     |    On     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            1024 X 768 VIDEO MODE CONFIGURATION             |
   |------------------------------------------------------------|
   |   Refresh Rate    |      Mode      |   SW1/4   |   SW1/5   |
   |-------------------+----------------+-----------+-----------|
   |>>   |    56Hz     |   Interlaced   |    Off    |    Off    |
   |-----+-------------+----------------+-----------+-----------|
   |     |    60Hz     | Non-interlaced |    On     |    Off    |
   |-----+-------------+----------------+-----------+-----------|
   |     |    70Hz     | Non-interlaced |    Off    |    On     |
   |-----+-------------+----------------+-----------+-----------|
   |     |    72Hz     | Non-interlaced |    On     |    On     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    RAMDAC CONFIGURATION                    |
   |------------------------------------------------------------|
   |          RAMDAC type           |  JP1   |       JP2        |
   |--------------------------------+--------+------------------|
   | BT478, BT476, KDA0478, KDA0476 | Closed |    pins 2 & 3    |
   |                                |        |      closed      |
   |--------------------------------+--------+------------------|
   |  SC11483, SC11487 (Hi-Color)   | Closed |    pins 1 & 2    |
   |                                |        |      closed      |
   |--------------------------------+--------+------------------|
   |             IMS178             |  Open  |    pins 1 & 2    |
   |                                |        |      closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     CPU CONFIGURATION                      |
   |------------------------------------------------------------|
   |       CPU        |   JP3    |   JP4    |   JP8    |  JP9   |
   |------------------+----------+----------+----------+--------|
   |     80486SX      |   Open   | pins 1 & | pins 2 & |  Open  |
   |                  |          | 2 closed | 3 closed |        |
   |------------------+----------+----------+----------+--------|
   | 80487SX/ODP486SX | pins 2 & | pins 2 & | pins 1 & | Closed |
   |                  | 3 closed | 3 closed | 2 closed |        |
   |------------------+----------+----------+----------+--------|
   |   80486DX/DX2    | pins 1 & | pins 1 & | pins 1 & | Closed |
   |                  | 2 closed | 2 closed | 2 closed |        |
   +------------------------------------------------------------+