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

   GA-403F

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 32-bit, VL-bus                         |
   |-------------------+----------------------------------------|
   | Size:             | Three/quarter-length, full-height card |
   |-------------------+----------------------------------------|
   | Hard drive        | Up to seven SCSI devices               |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB or 1.44MB      |
   | supported:        | drives                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/E-H/20576-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                   Function                    |  Location  |
   |-----------------------------------------------+------------|
   | 4-pin connector - drive active LED            |     J1     |
   |-----------------------------------------------+------------|
   | 34-pin control cable connector - floppy drive |     J2     |
   |-----------------------------------------------+------------|
   | 50-pin SCSI connector - internal              |     J6     |
   |-----------------------------------------------+------------|
   | 50-pin SCSI connector - external              |     J9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | Main board supports VL-bus     |   JB1    | pins 2 & 3 |
   |   | ID3/synchronize local ready    |          |   closed   |
   |   | delay  function.               |          |            |
   |---+--------------------------------+----------+------------|
   |   | Main board does not support    |   JB1    | pins 1 & 2 |
   |   | VL-bus ID3/synchronize local   |          |   closed   |
   |   | ready  delay function.         |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Floppy controller enabled      |    J5    |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Floppy controller disabled     |    J5    |    open    |
   |---+--------------------------------+----------+------------|
   |>> | Floptical/SCSI floppy and HD > |    J8    |    open    |
   |   | 1GB support disabled           |          |            |
   |---+--------------------------------+----------+------------|
   |   | Floptical/SCSI floppy and HD > |    J8    |   closed   |
   |   | 1GB support enabled            |          |            |
   |---+--------------------------------+----------+------------|
   |>> | SCSI BIOS enabled              |  SW1/2   |     on     |
   |---+--------------------------------+----------+------------|
   |   | SCSI BIOS disabled             |  SW1/2   |    off     |
   |---+--------------------------------+----------+------------|
   |>> | BIOS floptical/SCSI floppy     |  SW1/7   |    off     |
   |   | support disabled               |          |            |
   |---+--------------------------------+----------+------------|
   |   | BIOS floptical/SCSI floppy     |  SW1/7   |     on     |
   |   | support enabled                |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Floptical/SCSI floppy and HD > |  SW1/8   |    off     |
   |   | 1GB support disabled           |          |            |
   |---+--------------------------------+----------+------------|
   |   | Floptical/SCSI floppy and HD > |  SW1/8   |     on     |
   |   | 1GB support enabled            |          |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location  |  Setting  |
   |------------------------------------+-----------+-----------|
   |>>  | SCSI synchronous negotiation  |   SW1/9   |    on     |
   |    | enabled                       |           |           |
   |----+-------------------------------+-----------+-----------|
   |    | SCSI synchronous negotiation  |   SW1/9   |    off    |
   |    | disabled                      |           |           |
   |----+-------------------------------+-----------+-----------|
   |>>  | SCSI disconnect enabled       |  SW1/10   |    on     |
   |----+-------------------------------+-----------+-----------|
   |    | SCSI disconnect disabled      |  SW1/10   |    off    |
   |------------------------------------------------------------|
   | Note:Manufacturer's documentation concerning the functions |
   | of SW1/7 & SW1/8 are conflicting. It is                    |
   |                                                            |
   | recommended that the user not alter factory-configured     |
   | settings.                                                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        SCSI ADDRESS                        |
   |------------------------------------------------------------|
   |          Base Address           |          SW1/1           |
   |---------------------------------+--------------------------|
   |>>   |           340h            |            on            |
   |-----+---------------------------+--------------------------|
   |     |           140h            |           off            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |        Address        |      SW1/3       |      SW1/4      |
   |-----------------------+------------------+-----------------|
   |>> |      DC000h       |        on        |       on        |
   |---+-------------------+------------------+-----------------|
   |   |      D8000h       |       off        |       on        |
   |---+-------------------+------------------+-----------------|
   |   |      CC000h       |        on        |       off       |
   |---+-------------------+------------------+-----------------|
   |   |      C8000h       |       off        |       off       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      INTERRUPT SELECT                      |
   |------------------------------------------------------------|
   |  IRQ  |SW1/5|SW1/6|J4/jumper |J4/jumper|J4/jumper|J4/jumper|
   |       |     |     |    A     |    B    |    C    |    D    |
   |-------+-----+-----+----------+---------+---------+---------|
   |>>|IRQ11| off | on  |   open   |  open   | closed  |  open   |
   |-+-----+-----+-----+----------+---------+---------+---------|
   | |IRQ9 | off | off |  closed  |  open   |  open   |  open   |
   |-+-----+-----+-----+----------+---------+---------+---------|
   | |IRQ10| on  | off |   open   | closed  |  open   |  open   |
   |-+-----+-----+-----+----------+---------+---------+---------|
   | |IRQ12| on  | on  |   open   |  open   |  open   |  open   |
   +------------------------------------------------------------+