(TXT) View Source
       
       # CMS ENHANCEMENTS, INC.
       
          HCWDWX1
       
          +------------------------------------------------------------+
          |------------------------------------------------------------|
          | Data bus:                | 8-bit ISA                       |
          |--------------------------+---------------------------------|
          | Size:                    | Half-length, full-height card   |
          |--------------------------+---------------------------------|
          | Hard drive supported:    | Two MFM ST506/412 drives        |
          |--------------------------+---------------------------------|
          | Floppy drives supported: | None                            |
          +------------------------------------------------------------+
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                  Function                   |   Location   |
          |---------------------------------------------+--------------|
          | 34-pin control cable connector - hard drive |      J1      |
          |---------------------------------------------+--------------|
          | 20-pin data cable connector - drive 0       |      J2      |
          |---------------------------------------------+--------------|
          | 20-pin data cable connector - drive 1       |      J3      |
          |---------------------------------------------+--------------|
          | External power connector                    |      J4      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              | Location |  Setting   |
          |------------------------------------+----------+------------|
          | » | Factory configured - do not    |   J1/A   |    N/A     |
          |   | alter                          |          |            |
          |---+--------------------------------+----------+------------|
          | » | Factory configured - do not    |   J1/B   |    N/A     |
          |   | alter                          |          |            |
          |---+--------------------------------+----------+------------|
          | » | Factory configured - do not    |   J1/D   |    N/A     |
          |   | alter                          |          |            |
          |---+--------------------------------+----------+------------|
          |   | Controller supports up to 16   |    W6    | pins 1 & 2 |
          |   | heads                          |          |   closed   |
          |---+--------------------------------+----------+------------|
          |   | Controller supports up to 8    |    W6    | pins 2 & 3 |
          |   | heads                          |          |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       ADDRESS SELECT                       |
          |------------------------------------------------------------|
          |  I/O Address  |  Base Memory  |   W3   |    W4    |   W8   |
          |               |    Address    |        |          |        |
          |---------------+---------------+--------+----------+--------|
          | »  |  320 -   |    C8000 -    | closed | pins 2 & | pins 2 |
          |    |   323h   |    C9FFFh     |        |    3     |  & 3   |
          |----+----------+---------------+--------+----------+--------|
          |    |  324 -   |    CA000 -    | closed | pins 1 & | pins 1 |
          |    |   327h   |    CBFFFh     |        |    2     |  & 2   |
          |----+----------+---------------+--------+----------+--------|
          |    |   N/A    |   Disabled    |  open  |   N/A    |  N/A   |
          |------------------------------------------------------------|
          | Note: All pins designated should be placed in the closed   |
          | position.                                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             PRE-SELECTED DRIVE CONFIGURATIONS              |
          |------------------------------------------------------------|
          |          |     |         | First |  Second   |             |
          |          |     |         | Drive |   Drive   |             |
          |----------+-----+---------+-------+-----------+-------------|
          | |Capacity|Heads|Cylinders| J1/E  |   J1/F    | J1/G | J1/H |
          |-+--------+-----+---------+-------+-----------+------+------|
          |»|  10MB  |  4  |   306   | open  |   open    | open | open |
          |-+--------+-----+---------+-------+-----------+------+------|
          | |  21MB  |  4  |   612   |closed |  closed   |closed|closed|
          |-+--------+-----+---------+-------+-----------+------+------|
          | |  10MB  |  2  |   612   | open  |  closed   | open |closed|
          |-+--------+-----+---------+-------+-----------+------+------|
          | |  21MB  |  4  |   612   |closed |   open    |closed| open |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      INTERRUPT SELECT                      |
          |------------------------------------------------------------|
          |       IRQ        |             W7             |    J1/C    |
          |------------------+----------------------------+------------|
          | »     |   IRQ5   |     pins 1 & 2 closed      |    open    |
          |-------+----------+----------------------------+------------|
          |       |   IRQ2   |     pins 2 & 3 closed      |   closed   |
          |------------------------------------------------------------|
          | Note: The location of jumper W7 is not identified in       |
          | manufacturer documentation.                                |
          +------------------------------------------------------------+