GIGA-BYTE TECHNOLOGY, INC.
==========================

   GA-450

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 32-bit, VL-bus                         |
   |-------------------+----------------------------------------|
   | Size:             | Three/quarter-length, full-height card |
   |-------------------+----------------------------------------|
   | Hard drive        | Four IDE (AT) Interface drives         |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
   | supported:        | drives                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/E-H/20439-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                  Function                   |   Location   |
   |---------------------------------------------+--------------|
   | 34-pin control cable connector-floppy drive |     CN1      |
   |---------------------------------------------+--------------|
   | 40-pin AT Interface (IDE) connector - IDE-0 |     CN2      |
   |---------------------------------------------+--------------|
   | 40-pin AT Interface (IDE) connector - IDE-1 |     CN3      |
   |---------------------------------------------+--------------|
   | 4-pin connector-Drive active LED            |    JP101     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              INTERRUPT REQUEST CONFIGURATION               |
   |------------------------------------------------------------|
   |Address|JP302/jumper |JP302/jumper|JP302/jumper|JP302/jumper|
   |       |      1      |     2      |     3      |     4      |
   |-------+-------------+------------+------------+------------|
   |   | 5 |   closed    |    open    |    open    |    open    |
   |---+---+-------------+------------+------------+------------|
   |   |12 |    open     |   closed   |    open    |    open    |
   |---+---+-------------+------------+------------+------------|
   |>>  |14 |    open     |    open    |   closed   |    open    |
   |---+---+-------------+------------+------------+------------|
   |   |15 |    open     |    open    |    open    |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |   Address    | JP303/jumper  | JP303/jumper | JP303/jumper |
   |              |       1       |      2       |      3       |
   |--------------+---------------+--------------+--------------|
   |   |  C800h   |     open      |    closed    |     open     |
   |---+----------+---------------+--------------+--------------|
   |   |  D000h   |     open      |     open     |    closed    |
   |---+----------+---------------+--------------+--------------|
   |>> |  D800h   |     open      |    closed    |    closed    |
   |---+----------+---------------+--------------+--------------|
   |   | Disabled |     open      |     open     |     open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function              |   Location   | Setting |
   |-----------------------------------+--------------+---------|
   |>> | Hard drive port address is    | JP303/jumper | closed  |
   |   | 3F6, 3F7, 1F0-1F7h            |      4       |         |
   |---+-------------------------------+--------------+---------|
   |   | Hard drive port address is    | JP303/jumper |  open   |
   |   | 376, 377, 170-177h            |      4       |         |
   |---+-------------------------------+--------------+---------|
   |>> | Floppy drive enabled          | JP303/jumper | closed  |
   |   |                               |      5       |         |
   |---+-------------------------------+--------------+---------|
   |   | Floppy drive disabled         | JP303/jumper |  open   |
   |   |                               |      5       |         |
   |---+-------------------------------+--------------+---------|
   |>> | Normal operation enabled      | JP303/jumper | closed  |
   |   |                               |      6       |         |
   |---+-------------------------------+--------------+---------|
   |   | Test mode enabled             | JP303/jumper |  open   |
   |   |                               |      6       |         |
   |---+-------------------------------+--------------+---------|
   |>> | CPU speed is 50MHz            | JP303/jumper |  open   |
   |   |                               |      7       |         |
   |---+-------------------------------+--------------+---------|
   |   | CPU speed is 33MHz            | JP303/jumper | closed  |
   |   |                               |      7       |         |
   +------------------------------------------------------------+