(TXT) View Source
       
       # COMPAQ COMPUTER CORPORATION
       
          000519 HARD DISK DRIVE CONTROLLER BOARD
       
          +------------------------------------------------------------+
          |------------------------------------------------------------|
          | Data bus:         | 16-bit, ISA                            |
          |-------------------+----------------------------------------|
          | Size:             | Three/quarter-length, full-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  |
          |-----------------------------------------------+------------|
          | 40-pin IDE(AT) Interface connector            |    CN1     |
          |-----------------------------------------------+------------|
          | 34-pin control cable connector - floppy drive |    CN2     |
          |-----------------------------------------------+------------|
          | 10-pin serial port (COM1/2) - external        |    CN3     |
          |-----------------------------------------------+------------|
          | 25-pin parallel port (LPT1/2) - external      |    CN4     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function              |   Location   | Setting |
          |-----------------------------------+--------------+---------|
          | » | Hard drive port address is    | SW500/switch |  open   |
          |   | 1F0-1F7h                      |      1       |         |
          |   |                               |              |         |
          |   | Floppy drive port address is  |              |         |
          |   | 3F0-3F7h                      |              |         |
          |---+-------------------------------+--------------+---------|
          |   | Hard drive port address is    | SW500/switch | closed  |
          |   | 170-177h                      |      1       |         |
          |   |                               |              |         |
          |   | Floppy drive port address is  |              |         |
          |   | 370-377h                      |              |         |
          |---+-------------------------------+--------------+---------|
          | » | High-speed floppy drive       | SW500/switch | closed  |
          |   | transfer rate enabled         |      2       |         |
          |---+-------------------------------+--------------+---------|
          |   | High-speed floppy drive       | SW500/switch |  open   |
          |   | transfer rate disabled        |      2       |         |
          |---+-------------------------------+--------------+---------|
          | » | Hard drive enabled            | SW500/switch |  open   |
          |   |                               |      3       |         |
          |---+-------------------------------+--------------+---------|
          |   | Hard drive disabled           | SW500/switch | closed  |
          |   |                               |      3       |         |
          |---+-------------------------------+--------------+---------|
          | » | Serial Port (CN3) is set to   | SW500/switch |  open   |
          |   | COM1                          |      4       |         |
          |---+-------------------------------+--------------+---------|
          |   | Serial Port (CN3) is set to   | SW500/switch | closed  |
          |   | COM2                          |      4       |         |
          |---+-------------------------------+--------------+---------|
          | » | Serial Port (CN3) enabled     | SW500/switch |  open   |
          |   |                               |      5       |         |
          |---+-------------------------------+--------------+---------|
          |   | Serial Port (CN3) disabled    | SW500/switch | closed  |
          |   |                               |      5       |         |
          |---+-------------------------------+--------------+---------|
          | » | Parallel Port (CN3) enabled   | SW500/switch |  open   |
          |   |                               |      6       |         |
          |---+-------------------------------+--------------+---------|
          |   | Parallel Port (CN3) disabled  | SW500/switch | closed  |
          |   |                               |      6       |         |
          +------------------------------------------------------------+