UNIDENTIFIED
============

   IO-600 SUPER I/O CARD

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:     | 16-bit ISA                                 |
   |---------------+--------------------------------------------|
   | Size:         | Three-quarter length, half-height card     |
   |---------------+--------------------------------------------|
   | Hard drive    | Two IDE(AT) drives                         |
   | supported:    |                                            |
   |---------------+--------------------------------------------|
   | Floppy drives | Two 360KB, 720KB, 1.2MB, 1.44MB, or 2.88MB |
   | supported:    | drives                                     |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/U-Z/20930-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                     | Location |
   |-------------------------------------------------+----------|
   | 40-pin primary IDE(AT) connector                |    J1    |
   |-------------------------------------------------+----------|
   | 34-pin cable connector - floppy drive           |    J2    |
   |-------------------------------------------------+----------|
   | 16-pin game port                                |    J3    |
   |-------------------------------------------------+----------|
   | 10-pin serial port 2 - internal                 |    J4    |
   |-------------------------------------------------+----------|
   | 9-pin serial port 1 - external, 10-pin serial   |    J5    |
   | port 1 - internal                               |          |
   |-------------------------------------------------+----------|
   | 25-pin parallel port - external                 |    J6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function            | Location |    Setting     |
   |--------------------------------+----------+----------------|
   | IDE(AT) interface enabled      |   JP2    |   pins 1 & 2   |
   |                                |          |     closed     |
   |--------------------------------+----------+----------------|
   | IDE(AT) interface disabled     |   JP2    |   pins 2 & 3   |
   |                                |          |     closed     |
   |--------------------------------+----------+----------------|
   | Floppy drive interface enabled |   JP6    |   pins 1 & 2   |
   |                                |          |     closed     |
   |--------------------------------+----------+----------------|
   | Floppy drive interface         |   JP6    |   pins 2 & 3   |
   | disabled                       |          |     closed     |
   |--------------------------------+----------+----------------|
   | Game port enabled              |   JP18   |     closed     |
   |--------------------------------+----------+----------------|
   | Game port disabled             |   JP18   |      open      |
   |--------------------------------+----------+----------------|
   | Parallel port IRQ 7 select     |   JP17   |   pins 1 & 2   |
   |                                |          |     closed     |
   |--------------------------------+----------+----------------|
   | Parallel port IRQ 5 select     |   JP17   |   pins 2 & 3   |
   |                                |          |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       LPT        |       JP5/A        |       JP5/B        |
   |------------------+--------------------+--------------------|
   |   LPT1 (378h)    | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   LPT2 (278h)    | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   LPT3 (3BCh)    | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     Disabled     | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       COM        |       JP3/A        |       JP3/B        |
   |------------------+--------------------+--------------------|
   |   COM1 (3F8h)    | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   COM2 (3E8h)    | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |   COM3 (2F8h)    | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |     Disabled     | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 ADDRESS SELECTION               |
   |------------------------------------------------------------|
   |       COM        |       JP4/A        |       JP4/B        |
   |------------------+--------------------+--------------------|
   |   COM2 (2F8h)    | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   COM1 (3F8h)    | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |   COM4 (2E8h)    | pins 1 & 2 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |     Disabled     | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT MODE CONFIGURATION              |
   |------------------------------------------------------------|
   |        Mode        |        JP7        |        JP8        |
   |--------------------+-------------------+-------------------|
   |      Printer       | pins 2 & 3 closed | pins 2 & 3 closed |
   |--------------------+-------------------+-------------------|
   |     EPP & ECP      | pins 1 & 2 closed | pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       DMA SELECTION                        |
   |------------------------------------------------------------|
   |      Channel       |        JP9        |       JP10        |
   |--------------------+-------------------+-------------------|
   |         1          | pins 2 & 3 closed | pins 2 & 3 closed |
   |--------------------+-------------------+-------------------|
   |         3          | pins 1 & 2 closed | pins 1 & 2 closed |
   +------------------------------------------------------------+