DIAMOND FLOWER, INC.
====================

   DIAMOND I/O

   Card Type          Multi I/O                                   
   Chipset/Controller National Semiconductor                      
   I/O Options        Parallel port, serial ports (2)             
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/C-D/50228-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |    J1    | Parallel port    |    J3    |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |    J2    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SERIAL PORT CONFIGURATION                  |
   |------------------------------------------------------------|
   |  Port 1 (J1)  |  Setting   | SW1/switch 3  | SW1/switch 6  |
   |---------------+------------+---------------+---------------|
   |>>   |  COM1   |  Enabled   |      On       |      Off      |
   |-----+---------+------------+---------------+---------------|
   |     |  COM3   |  Disabled  |      Off      |      On       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SERIAL PORT CONFIGURATION                  |
   |------------------------------------------------------------|
   |  Port 2 (J2)  |  Setting   | SW1/switch 4  | SW1/switch 7  |
   |---------------+------------+---------------+---------------|
   |>>   |  COM2   |  Enabled   |      On       |      Off      |
   |-----+---------+------------+---------------+---------------|
   |     |  COM4   |  Disabled  |      Off      |      On       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT INTERRUPT SELECTION               |
   |------------------------------------------------------------|
   | Port 1 (J1)  | Port 2 (J2) | SW2/1 | SW2/2 | SW2/3 | SW2/4 |
   |--------------+-------------+-------+-------+-------+-------|
   |>>    | IRQ4  |    IRQ3     |  On   |  Off  |  On   |  Off  |
   |------+-------+-------------+-------+-------+-------+-------|
   |      | IRQ3  |    IRQ4     |  Off  |  On   |  Off  |  On   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |       SERIAL PORT NORMAL/FORCED TRUE CONFIGURATION         |
   |------------------------------------------------------------|
   |   Port 1    | Port 2  |         J4         |      J5       |
   |-------------+---------+--------------------+---------------|
   |>> | Normal  | Normal  | Pins 2 & 3, 5 & 6, | Pins 2 & 3, 5 |
   |   |         |         |    8 & 9 closed    |  & 6, 8 & 9   |
   |   |         |         |                    |    closed     |
   |---+---------+---------+--------------------+---------------|
   |   | Forced  | Forced  | Pins 1 & 2, 4 & 5, | Pins 1 & 2, 4 |
   |   |  True   |  True   |    7 & 8 closed    |  & 5, 7 & 8   |
   |   |         |         |                    |    closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            SERIAL PORT'S DTE/DCE CONFIGURATION             |
   |------------------------------------------------------------|
   |   Primary serial port J1    |   Secondary serial port J2   |
   |-----------------------------+------------------------------|
   |          Jumper J6          |          Jumper J7           |
   |                             |                              |
<gopher://bitreich.org/I/th99/i/C-D/50228-2.png>
   |                     | [3][IMG]                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  PARALLEL PORT SETTINGS                    |
   |------------------------------------------------------------|
   |       LPT        |    SW1/switch 1    |    SW1/switch 5    |
   |------------------+--------------------+--------------------|
   |>> |      1       |         On         |        Off         |
   |---+--------------+--------------------+--------------------|
   |   |      2       |        Off         |         On         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 PARALLEL PORT INTERRUPTS                   |
   |------------------------------------------------------------|
   |       IRQ        |    SW2/switch 5    |    SW2/switch 6    |
   |------------------+--------------------+--------------------|
   |>> |     IRQ7     |         On         |        Off         |
   |---+--------------+--------------------+--------------------|
   |   |     IRQ5     |        Off         |         On         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CLOCK CONFIGURATION                     |
   |------------------------------------------------------------|
   |            Clock             |        SW1/switch 2         |
   |------------------------------+-----------------------------|
   |>> |         Enabled          |             On              |
   |---+--------------------------+-----------------------------|
   |   |         Disabled         |             Off             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CLOCK INTERRUPT SELECT                    |
   |------------------------------------------------------------|
   |       IRQ        |    SW2/switch 7    |    SW2/switch 8    |
   |------------------+--------------------+--------------------|
   |>> |     IRQ2     |        Off         |         On         |
   |---+--------------+--------------------+--------------------|
   |   |     IRQ5     |         On         |        Off         |
   +------------------------------------------------------------+