HAYES MICROCOMPUTER PRODUCTS, INC.
==================================

   OPTIMA 144B + FAX144

   Modem Type             Data (synchronous/asynchronous)/Fax     
   Maximum Data Rate      14.4Kbps                                
   Maximum Fax Rate       14.4Kbps                                
   Data Bus               External                                
   Fax Class              Class I & II                            
   Data Modulation        Bell 103A/212A                          
   Protocol                                                       
                          ITU-T V.21, V.22, V.22bis, V.32,        
                          V.32bis                                 
   Fax Modulation         V.17, V.27ter, V.29                     
   Protocol               
   Error                  MNP2-5, V.42, V.42bis                   
   Correction/Compression 

<gopher://bitreich.org/I/th99/t/E-H/51195-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Purpose      | Location |      Purpose      | Location |
   |------------------+----------+-------------------+----------|
   | Line in          |   CN1    | Line out          |   CN2    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   |      Address       |       SW1/1       |       SW1/2       |
   |--------------------+-------------------+-------------------|
   |       COM1:        |        On         |        On         |
   |--------------------+-------------------+-------------------|
   |       COM2:        |        On         |        Off        |
   |--------------------+-------------------+-------------------|
   |       COM3:        |        Off        |        On         |
   |--------------------+-------------------+-------------------|
   |       COM4:        |        Off        |        Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      HAYES ESP(TM) MODE                       |
   |------------------------------------------------------------|
   |                 Mode                  |  SW1/3   |  SW1/4  |
   |---------------------------------------+----------+---------|
   |            16450 UART mode            |    On    |   On    |
   |---------------------------------------+----------+---------|
   |            16550 UART mode            |    On    |   Off   |
   |---------------------------------------+----------+---------|
   | 16550 UART with hardware flow control |   Off    |   On    |
   |---------------------------------------+----------+---------|
   |               Disabled                |   Off    |   Off   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   |     Address      |        JP1         |        JP2         |
   |------------------+--------------------+--------------------|
   |       180h       | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |       188h       | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |       250h       | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |       258h       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   +------------------------------------------------------------+