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       # BOCA RESEARCH, INC.
       
          BOCAMODEM M024ID
       
          Modem Type                   Data (asynchronous)               
          Maximum Data Rate            2400bps                           
          Data Bus                     8-bit ISA                         
          Data Modulation Protocol     Bell 103A/212A                    
                                                                         
                                       ITU-T V.22, V.22bis               
          Error Correction/Compression Unidentified                      
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |      Purpose      | Location |     Purpose      | Location |
          |-------------------+----------+------------------+----------|
          | Line out          |   CN1    | Line in          |   CN2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |      Port      |  JP1/A   |  JP1/B   |  JP1/C   |  JP1/D   |
          |----------------+----------+----------+----------+----------|
          | COM1: (3F8h)   |  Closed  |   Open   |   Open   |   Open   |
          |----------------+----------+----------+----------+----------|
          | COM2: (2F8h)   |   Open   |  Closed  |   Open   |   Open   |
          |----------------+----------+----------+----------+----------|
          | » COM3: (3E8h) |   Open   |   Open   |  Closed  |   Open   |
          |----------------+----------+----------+----------+----------|
          | COM4: (2E8h)   |   Open   |   Open   |   Open   |  Closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |   IRQ   |   JP1/E    |   JP1/F    |   JP1/G    |   JP1/H   |
          |---------+------------+------------+------------+-----------|
          | 3       |   Closed   |    Open    |    Open    |   Open    |
          |---------+------------+------------+------------+-----------|
          | 4       |    Open    |   Closed   |    Open    |   Open    |
          |---------+------------+------------+------------+-----------|
          | » 5     |    Open    |    Open    |   Closed   |   Open    |
          |---------+------------+------------+------------+-----------|
          | 7       |    Open    |    Open    |    Open    |  Closed   |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
          +------------------------------------------------------------+
          |                    BIT-MAPPED REGISTERS                    |
          |------------------------------------------------------------|
          |           Registers           |          Default           |
          |-------------------------------+----------------------------|
          |              S14              |            138             |
          |-------------------------------+----------------------------|
          |              S21              |             4              |
          |-------------------------------+----------------------------|
          |              S22              |            117             |
          |-------------------------------+----------------------------|
          |              S23              |             55             |
          |-------------------------------+----------------------------|
          |              S27              |             73             |
          |-------------------------------+----------------------------|
          |              S28              |             0              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       PROTOCOL/SPEED                       |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S19=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS19=0<CR>                                 |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | Unidentified                                |
          |--------------+---------------------------------------------|
          | Description: | Selects the current protocol and speed.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        SLEEP TIMER                         |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S24=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS24=0<CR>                                 |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | Unidentified                                |
          |--------------+---------------------------------------------|
          | Description: | Maximum duration of DTE and DCE inactivity  |
          |              | allowed prior to initiating low-power sleep |
          |              | mode.                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         TEST MODES                         |
          |------------------------------------------------------------|
          | Type:          | Register                                  |
          |----------------+-------------------------------------------|
          | Format         | AT [cmds] S16=n [cmds]                    |
          |----------------+-------------------------------------------|
          | Example:       | ATS16=0<CR>                               |
          |----------------+-------------------------------------------|
          | Default:       | 0                                         |
          |----------------+-------------------------------------------|
          | Range:         | 0-125                                     |
          |----------------+-------------------------------------------|
          | Unit:          | Bit-mapped                                |
          |----------------+-------------------------------------------|
          | Description:   | Controls loopback tests, analog, digital, |
          |                | remote digital, and self tests.           |
          |------------------------------------------------------------|
          |   Bit    | Value |                Function                 |
          |----------+-------+-----------------------------------------|
          |    0     |   0   | Local analog loopback not in progress.  |
          |          |       |                                         |
          |          |   1   | Local analog loopback in progress.      |
          |----------+-------+-----------------------------------------|
          |    1     |   0   | Not used.                               |
          |----------+-------+-----------------------------------------|
          |    2     |   0   | Local digital loopback not in progress. |
          |          |       |                                         |
          |          |   1   | Local digital loopback in progress.     |
          |----------+-------+-----------------------------------------|
          |    3     |   0   | Modem not in remote digital loopback.   |
          |          |       |                                         |
          |          |   1   | Remote digital loopback in progress.    |
          |----------+-------+-----------------------------------------|
          |    4     |   0   | Remote digital loopback not requested.  |
          |          |       |                                         |
          |          |   1   | Remote digital loopback requested.      |
          |----------+-------+-----------------------------------------|
          |    5     |   0   | Remote digital loopback w/ self-test    |
          |          |       | not in progress.                        |
          |          |   1   |                                         |
          |          |       | Remote digital loopback w/ self-test in |
          |          |       | progress.                               |
          |----------+-------+-----------------------------------------|
          |    6     |   0   | Local analog loopback w/ self-test not  |
          |          |       | in progress.                            |
          |          |   1   |                                         |
          |          |       | Local analog loopback w/ self-test in   |
          |          |       | progress.                               |
          +------------------------------------------------------------+