URI: 
  TEXT View Source
       
       # UNIDENTIFIED
       
          RY-3301
       
          Category                     Video                             
          Video Types Supported        CGA/Monochrome                    
          Video Processor              Unidentified                      
          Highest Resolution Supported 640 x 200                         
          Data Bus Type                8-bit ISA                         
          Memory Type                  DRAM                              
          Maximum Onboard Memory       64KB                              
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Purpose       | Location |    Purpose     | Location |
          |---------------------+----------+----------------+----------|
          | Composite video     |   CN1    | Parallel port  |   CN4    |
          | connector           |          |                |          |
          |---------------------+----------+----------------+----------|
          | Light pen connector |   CN2    | 15-pin analog  |   CN5    |
          |                     |          | video port     |          |
          |---------------------+----------+----------------+----------|
          | Bus mouse           |   CN3    |                |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               BUS MOUSE INTERRUPT SELECTION                |
          |------------------------------------------------------------|
          |            IRQ             |              CN6              |
          |----------------------------+-------------------------------|
          | »  |           5           |       Pins 7 & 8 closed       |
          |----+-----------------------+-------------------------------|
          |    |          2/9          |       Pins 1 & 2 closed       |
          |----+-----------------------+-------------------------------|
          |    |           3           |       Pins 3 & 4 closed       |
          |----+-----------------------+-------------------------------|
          |    |           4           |       Pins 5 & 6 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              MONITOR EMULATION CONFIGURATION               |
          |------------------------------------------------------------|
          |             Mode             |  SW1/1  |  SW1/2  |  SW1/3  |
          |------------------------------+---------+---------+---------|
          | » |     Color emulation      |   On    |   N/A   |   N/A   |
          |---+--------------------------+---------+---------+---------|
          |   |          Color           |   Off   |   On    |   On    |
          |---+--------------------------+---------+---------+---------|
          |   | Auto switch via software |   Off   |   N/A   |   Off   |
          |---+--------------------------+---------+---------+---------|
          |   |         Hercules         |   Off   |   Off   |   On    |
          |---+--------------------------+---------+---------+---------|
          |   | Auto switch via software |   Off   |   Off   |   Off   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PARALLEL PORT CONFIGURATION                 |
          |------------------------------------------------------------|
          |               LPT               |          SW1/4           |
          |---------------------------------+--------------------------|
          | »      |           1            |           Off            |
          |--------+------------------------+--------------------------|
          |        |           2            |            On            |
          +------------------------------------------------------------+