(TXT) View Source
       
       # HEDAKA
       
          HED-986 (DIP VERSION)
       
          Processor             80286                                    
          Processor Speed       12/16/20MHz                              
          Chip Set              Hedaka                                   
          Max. Onboard DRAM     2MB                                      
          Cache                 None                                     
          BIOS                  AMI                                      
          Dimensions            330mm x 218mm                            
          I/O Options           None                                     
          NPU Options           80287                                    
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose        | Location | Purpose             | Location |
          |----------------+----------+---------------------+----------|
          | Turbo LED      |   CN1    | Auxiliary keyboard  |   CN7    |
          |----------------+----------+---------------------+----------|
          | Turbo switch   |   CN3    | Power LED & keylock |   CN9    |
          |----------------+----------+---------------------+----------|
          | Speaker        |   CN4    | Speed display       |   CN12   |
          |----------------+----------+---------------------+----------|
          | Reset switch   |   CN5    |                     |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Monitor type select color        |  JP8   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  JP8   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | NPU clock select internal        |  JP15  | pins 2 & 3 |
          |   | oscillator                       |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | NPU clock select external        |  JP15  | pins 1 & 2 |
          |   | oscillator                       |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | NPU speed select OSC/1           |  JP14  | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | NPU speed select OSC/3           |  JP14  | pins 2 & 3 |
          |   |                                  |        |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Size  |   Bank 0   |   Bank 1   |   Bank 2   |   Bank 3   |
          |--------+------------+------------+------------+------------|
          | 512KB  | (4) 44256  |    NONE    |    NONE    |    NONE    |
          |--------+------------+------------+------------+------------|
          |  1MB   | (4) 44256  | (4) 44256  |    NONE    |    NONE    |
          |--------+------------+------------+------------+------------|
          | 1.5MB  | (4) 44256  | (4) 44256  | (4) 44256  |    NONE    |
          |--------+------------+------------+------------+------------|
          |  2MB   | (4) 44256  | (4) 44256  | (4) 44256  | (4) 44256  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM PARITY CONFIGURATION                  |
          |------------------------------------------------------------|
          |  Size  |    P-0     |    P-1     |    P-2     |    P-3     |
          |--------+------------+------------+------------+------------|
          | 512KB  | (2) 41256  |    NONE    |    NONE    |    NONE    |
          |--------+------------+------------+------------+------------|
          |  1MB   | (2) 41256  | (2) 41256  |    NONE    |    NONE    |
          |--------+------------+------------+------------+------------|
          | 1.5MB  | (2) 41256  | (2) 41256  | (2) 41256  |    NONE    |
          |--------+------------+------------+------------+------------|
          |  2MB   | (2) 41256  | (2) 41256  | (2) 41256  | (2) 41256  |
          +------------------------------------------------------------+