GSI, INC.
=========

   MODEL 4C INTELLIGENT IDEA

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:                | 16-bit, ISA                     |
   |--------------------------+---------------------------------|
   | Size:                    | Half-length, full-height card   |
   |--------------------------+---------------------------------|
   | Hard drive supported:    | Eight IDE (AT) Interface drives |
   |--------------------------+---------------------------------|
   | Floppy drives supported: | None                            |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/E-H/20413-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                  Function                   |   Location   |
   |---------------------------------------------+--------------|
   | 40-pin IDE(AT) Interface connector IDE-1    |      J1      |
   |---------------------------------------------+--------------|
   | 40-pin IDE(AT) Interface connector IDE-2    |      J2      |
   |---------------------------------------------+--------------|
   | 40-pin IDE(AT) Interface connector IDE-3    |      J3      |
   |---------------------------------------------+--------------|
   | 40-pin IDE(AT) Interface connector IDE-4    |      J4      |
   |---------------------------------------------+--------------|
   | 5-pin connector - DC power                  |      J5      |
   |---------------------------------------------+--------------|
   | 4-pin connector - drive active LED -        |      J9      |
   | IDE-1-IDE-4                                 |              |
   |---------------------------------------------+--------------|
   | 2-pin connector - drive active LED - IDE-1  | J11/jumper 1 |
   |---------------------------------------------+--------------|
   | 2-pin connector - drive active LED - IDE-2  | J11/jumper 2 |
   |---------------------------------------------+--------------|
   | 2-pin connector - drive active LED - IDE-3  | J11/jumper 3 |
   |---------------------------------------------+--------------|
   | 2-pin connector - drive active LED - IDE-4  | J11/jumper 4 |
   |---------------------------------------------+--------------|
   | 2-pin connector - drive active LED -        | J11/jumper 5 |
   | IDE-1-IDE-4                                 |              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             HARD DRIVE IDE-4 INTERRUPT REQUEST             |
   |------------------------------------------------------------|
   |        IRQ         |    J6/jumper 1    |    J6/jumper 2    |
   |--------------------+-------------------+-------------------|
   |   |       9        |      closed       |       open        |
   |---+----------------+-------------------+-------------------|
   |>> |       10       |       open        |      closed       |
   |---+----------------+-------------------+-------------------|
   |   |    Disabled    |       open        |       open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             HARD DRIVE IDE-3 INTERRUPT REQUEST             |
   |------------------------------------------------------------|
   |        IRQ         |    J6/jumper 3    |    J6/jumper 4    |
   |--------------------+-------------------+-------------------|
   |>> |       11       |      closed       |       open        |
   |---+----------------+-------------------+-------------------|
   |   |       12       |       open        |      closed       |
   |---+----------------+-------------------+-------------------|
   |   |    Disabled    |       open        |       open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             HARD DRIVE IDE-2 INTERRUPT REQUEST             |
   |------------------------------------------------------------|
   |        IRQ         |    J6/jumper 5    |    J6/jumper 6    |
   |--------------------+-------------------+-------------------|
   |   |       10       |      closed       |       open        |
   |---+----------------+-------------------+-------------------|
   |>> |       15       |       open        |      closed       |
   |---+----------------+-------------------+-------------------|
   |   |    Disabled    |       open        |       open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              |  Location   | Setting |
   |------------------------------------+-------------+---------|
   |>> | Interrupt Request IRQ14 for    | J6/jumper 7 | closed  |
   |   | IDE-1 enabled                  |             |         |
   |---+--------------------------------+-------------+---------|
   |   | Interrupt Request IRQ14 for    | J6/jumper 7 |  open   |
   |   | IDE-1 disabled                 |             |         |
   |---+--------------------------------+-------------+---------|
   |   | IDE-3 DMA Acknowledge DACK5    | J7/jumper 1 | closed  |
   |   | enabled                        |             |         |
   |---+--------------------------------+-------------+---------|
   |>> | IDE-3 DMA Acknowledge DACK5    | J7/jumper 1 |  open   |
   |   | disabled                       |             |         |
   |---+--------------------------------+-------------+---------|
   |   | IDE-3 DMA Request is DREQ5     | J7/jumper 2 | closed  |
   |   | enabled                        |             |         |
   |---+--------------------------------+-------------+---------|
   |>> | IDE-3 DMA Request is DREQ5     | J7/jumper 2 |  open   |
   |   | disabled                       |             |         |
   |---+--------------------------------+-------------+---------|
   |   | IDE-2 DMA Acknowledge DACK6    | J7/jumper 3 | closed  |
   |   | enabled                        |             |         |
   |---+--------------------------------+-------------+---------|
   |>> | IDE-2 DMA Acknowledge DACK6    | J7/jumper 3 |  open   |
   |   | disabled                       |             |         |
   |---+--------------------------------+-------------+---------|
   |   | IDE-2 DMA Request is DREQ6     | J7/jumper 4 | closed  |
   |   | enabled                        |             |         |
   |---+--------------------------------+-------------+---------|
   |>> | IDE-2 DMA Request is DREQ6     | J7/jumper 4 |  open   |
   |   | disabled                       |             |         |
   |---+--------------------------------+-------------+---------|
   |   | IDE-1 DMA Acknowledge DACK7    | J7/jumper 5 | closed  |
   |   | enabled                        |             |         |
   |---+--------------------------------+-------------+---------|
   |>> | IDE-1 DMA Acknowledge DACK7    | J7/jumper 5 |  open   |
   |   | disabled                       |             |         |
   |---+--------------------------------+-------------+---------|
   |   | IDE-1 DMA Request is DREQ7     | J7/jumper 6 | closed  |
   |   | enabled                        |             |         |
   |---+--------------------------------+-------------+---------|
   |>> | IDE-1 DMA Request is DREQ7     | J7/jumper 6 |  open   |
   |   | disabled                       |             |         |
   |---+--------------------------------+-------------+---------|
   |>> | Hard drive IDE-1 enabled       | J8/jumper 1 | closed  |
   |---+--------------------------------+-------------+---------|
   |   | Hard drive IDE-1 disabled      | J8/jumper 1 |  open   |
   |---+--------------------------------+-------------+---------|
   |>> | Hard drive IDE-2 enabled       | J8/jumper 2 | closed  |
   |---+--------------------------------+-------------+---------|
   |   | Hard drive IDE-2 disabled      | J8/jumper 2 |  open   |
   |---+--------------------------------+-------------+---------|
   |>> | Hard drive IDE-3 enabled       | J8/jumper 3 | closed  |
   |---+--------------------------------+-------------+---------|
   |   | Hard drive IDE-3 disabled      | J8/jumper 3 |  open   |
   |---+--------------------------------+-------------+---------|
   |>> | Hard drive IDE-4 enabled       | J8/jumper 4 | closed  |
   |---+--------------------------------+-------------+---------|
   |   | Hard drive IDE-4 disabled      | J8/jumper 4 |  open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS ADDRESS - J10                     |
   |------------------------------------------------------------|
   |       Address       |   J10/jumper 1    |   J10/jumper 2   |
   |---------------------+-------------------+------------------|
   |>> |   CC00-CDFFh    |      closed       |      closed      |
   |---+-----------------+-------------------+------------------|
   |   |   D400-D5FFh    |       open        |      closed      |
   |---+-----------------+-------------------+------------------|
   |   |   DC00-DDFFh    |      closed       |       open       |
   |---+-----------------+-------------------+------------------|
   |   |   E000-E1FFh    |       open        |       open       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   |     IDE-4 has no DMA capability. For any disabled IDE      |
   | channels, disable corresponding Interrupt Request and DMA  |
   |                       configuration.                       |
   +------------------------------------------------------------+