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       # COMTROL CORPORATION
       
          HOSTESS 554 QUADCABLE, HOSTESS 554 OCTACABLE
       
          Card Type      Serial                                          
          Chipset        16554                                           
          I/O Options    Serial ports (4 for Quadcable, 8 for Octacable) 
          Data Bus       16-bit ISA                                      
          Card Size      Full-height, half-length                        
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                  Function                  |     Label     |
          |--------------------------------------------+---------------|
          | Serial ports via DB-78 port                |      J1       |
          |------------------------------------------------------------|
          |      Note:Standard serial ports are available on an        |
          |      included adapter cable.                               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Setting                 | Label | Position  |
          |----------------------------------------+-------+-----------|
          | Interrupt mask enabled                 | SW2/1 |    On     |
          |----------------------------------------+-------+-----------|
          | Interrupt mask disabled                | SW2/1 |    Off    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |Setting |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5|SW1/6|SW1/7|SW1/8|
          |--------+------+------+------+------+-----+-----+-----+-----|
          | |0000h |  On  |  On  |  On  |  On  | On  | On  | On  | On  |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |0020h | Off  |  On  |  On  |  On  | On  | On  | On  | On  |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |0040h |  On  | Off  |  On  |  On  | On  | On  | On  | On  |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |0060h | Off  | Off  |  On  |  On  | On  | On  | On  | On  |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |0080h |  On  |  On  | Off  |  On  | On  | On  | On  | On  |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          |»|0280h |  On  |  On  | Off  |  On  | Off | On  | On  | On  |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |1F60h | Off  | Off  |  On  | Off  | Off | Off | Off | Off |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |1F80h |  On  |  On  | Off  | Off  | Off | Off | Off | Off |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |1FA0h | Off  |  On  | Off  | Off  | Off | Off | Off | Off |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |1FC0h |  On  | Off  | Off  | Off  | Off | Off | Off | Off |
          |-+------+------+------+------+------+-----+-----+-----+-----|
          | |1FE0h | Off  | Off  | Off  | Off  | Off | Off | Off | Off |
          |------------------------------------------------------------|
          |     Note: A total of 512 base address settings are         |
          |     available. The switches are a binary representation of |
          |     the decimal memory addresses. SW1/8 is the Most        |
          |     Significant Bit and switch SW1/1 is the Least          |
          |     Significant Bit. The switches have the following       |
          |     decimal values: SW1/8=4096, SW1/7=2048, SW1/6=1024,    |
          |     SW1/5=512, SW1/4=256, SW1/3=128, SW1/2=64, SW1/1=32.   |
          |     Turn off the switches and add the values of the        |
          |     switches that are off to obtain the correct memory     |
          |     address. (Off=1, On=0)                                 |
          |                                                            |
          |     SW1/1 must be off on the Octacable card.               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |Setting|   JP1    |SW2/2|SW2/3|SW2/4|SW2/5|SW2/6|SW2/7|SW2/8|
          |-------+----------+-----+-----+-----+-----+-----+-----+-----|
          |   2   |Pins 1 & 2| On  | Off | Off | Off | Off | Off | Off |
          |-------+----------+-----+-----+-----+-----+-----+-----+-----|
          |   3   |Pins 1 & 2| Off | On  | Off | Off | Off | Off | Off |
          |-------+----------+-----+-----+-----+-----+-----+-----+-----|
          |   4   |Pins 1 & 2| Off | Off | On  | Off | Off | Off | Off |
          |-------+----------+-----+-----+-----+-----+-----+-----+-----|
          |   5   |Pins 1 & 2| Off | Off | Off | On  | Off | Off | Off |
          |-------+----------+-----+-----+-----+-----+-----+-----+-----|
          |   7   |Pins 1 & 2| Off | Off | Off | Off | On  | Off | Off |
          |-------+----------+-----+-----+-----+-----+-----+-----+-----|
          |  10   |Pins 1 & 2| Off | Off | Off | Off | Off | On  | Off |
          |-------+----------+-----+-----+-----+-----+-----+-----+-----|
          |  11   |Pins 1 & 2| Off | Off | Off | Off | Off | Off | On  |
          |-------+----------+-----+-----+-----+-----+-----+-----+-----|
          |  12   |Pins 2 & 3| Off | Off | Off | Off | Off | Off | Off |
          |------------------------------------------------------------|
          |     Note:Pins designated are in the closed position.       |
          +------------------------------------------------------------+