(TXT) View Source
       
       # HEDAKA
       
          HED--826
       
          +------------------------------------------------------------+
          |------------------------------------------------------------|
          | Data bus:         | 16-bit, ISA                            |
          |-------------------+----------------------------------------|
          | Size:             | Half-length, half-height card          |
          |-------------------+----------------------------------------|
          | Hard drive        | Two IDE (AT) Interface drives          |
          | supported:        |                                        |
          |-------------------+----------------------------------------|
          | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
          | supported:        | drives                                 |
          +------------------------------------------------------------+
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                  Function                   |   Location   |
          |---------------------------------------------+--------------|
          | 34-pin control cable connector-floppy drive |      J1      |
          |---------------------------------------------+--------------|
          | 40-pin AT Interface (IDE) connector         |      J2      |
          |---------------------------------------------+--------------|
          | 4-pin connector-Drive active LED            |     JP3      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              | Location |  Setting   |
          |------------------------------------+----------+------------|
          | » | Single speed floppy drives     |   JP1    |    open    |
          |   | supported                      |          |            |
          |---+--------------------------------+----------+------------|
          |   | Dual speed floppy drives       |   JP1    |   closed   |
          |   | supported                      |          |            |
          |---+--------------------------------+----------+------------|
          | » | IRQ14 normal                   |   JP4    | pins 2 & 3 |
          |   |                                |          |   closed   |
          |---+--------------------------------+----------+------------|
          |   | IRQ14 delayed until ACTIVE-    |   JP4    | pins 1 & 2 |
          |   | signal is removed              |          |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          |           Jumper JP2 is reserved - do not alter.           |
          +------------------------------------------------------------+