HEDAKA
======

   HED-918

   Processor             8088/V20                                 
   Processor Speed       4.77/10MHz                               
   Chip Set              None                                     
   Max. Onboard DRAM     640KB                                    
   Cache                 None                                     
   BIOS                  AMI                                      
   Dimensions            217mm x 166mm                            
   I/O Options           None                                     
   NPU Options           8087                                     

<gopher://bitreich.org/I/th99/m/E-H/30574-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose         | Location | Purpose            | Location |
   |-----------------+----------+--------------------+----------|
   | Power LED       |   CN2    | Turbo LED          |   CN6    |
   |-----------------+----------+--------------------+----------|
   | Speaker         |   CN3    | External battery   |   CN7A   |
   |-----------------+----------+--------------------+----------|
   | Reset switch    |   CN4    | Keylock            |   CN8    |
   |-----------------+----------+--------------------+----------|
   | Turbo switch    |   CN5    |                    |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | CPU type select Intel     |      JP2      | pins 1 & 2 |
   |   | 8088                      |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | CPU type select NEC V-20  |      JP2      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW1/1     |    Off     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | NPU disabled              |     SW1/2     |     On     |
   |---+---------------------------+---------------+------------|
   |   | NPU enabled               |     SW1/2     |    Off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |      Size       |     44256 Chips     |    411000 Chips    |
   |-----------------+---------------------+--------------------|
   |       0KB       |        NONE         |        NONE        |
   |-----------------+---------------------+--------------------|
   |      128KB      |         U7          |        NONE        |
   |-----------------+---------------------+--------------------|
   |      256KB      |       U6 & U7       |        NONE        |
   |-----------------+---------------------+--------------------|
   |      384KB      |     U5, U6 & U7     |        NONE        |
   |-----------------+---------------------+--------------------|
   |      512KB      |   U4, U5, U6 & U7   |        NONE        |
   |-----------------+---------------------+--------------------|
   |      512KB      |        NONE         |  U4, U5, U6 & U7   |
   |-----------------+---------------------+--------------------|
   |      640KB      | U3, U4, U5, U6 & U7 |        NONE        |
   |-----------------+---------------------+--------------------|
   |      640KB      |         U3          |  U4, U5, U6 & U7   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              DRAM JUMPER/SWITCH CONFIGURATION              |
   |------------------------------------------------------------|
   |    Size     |        JP1        |    SW1/3    |   SW1/4    |
   |-------------+-------------------+-------------+------------|
   |     0KB     | pins 1 & 2 closed |     On      |     On     |
   |-------------+-------------------+-------------+------------|
   |    128KB    | pins 1 & 2 closed |     Off     |     On     |
   |-------------+-------------------+-------------+------------|
   |    256KB    | pins 1 & 2 closed |     Off     |     On     |
   |-------------+-------------------+-------------+------------|
   |    384KB    | pins 1 & 2 closed |     Off     |     On     |
   |-------------+-------------------+-------------+------------|
   |    512KB    | pins 1 & 2 closed |     Off     |     On     |
   |-------------+-------------------+-------------+------------|
   |    512KB    | pins 2 & 3 closed |     Off     |     On     |
   |-------------+-------------------+-------------+------------|
   |    640KB    | pins 1 & 2 closed |     On      |    Off     |
   |-------------+-------------------+-------------+------------|
   |    640KB    | pins 2 & 3 closed |     On      |    Off     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 FLOPPY DRIVE CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Drives installed  |       SW1/7       |       SW1/8       |
   |--------------------+-------------------+-------------------|
   |         1          |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |         2          |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |         3          |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |         4          |        Off        |        Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   MONITOR CONFIGURATION                    |
   |------------------------------------------------------------|
   |        Type        |       SW1/3       |       SW1/4       |
   |--------------------+-------------------+-------------------|
   |        None        |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |   40 x 25 color    |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |   80 x 25 color    |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |     Monochrome     |        Off        |        Off        |
   +------------------------------------------------------------+