(TXT) View Source
# ENTRE COMPUTER CENTER
ENTRE 2400B
Modem Type Data (asynchronous)
Maximum Data Rate 2400bps
Data Bus 8-bit ISA
Data Modulation Protocol Unidentified
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Line out | CN1 | Line in | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port | IRQ | SW1/3 | SW1/4 |
|----------------+-------------+--------------+--------------|
| COM1: (3F8h) | 4 | On | Off |
|----------------+-------------+--------------+--------------|
| » COM2: (2F8h) | 3 | Off | Off |
|----------------+-------------+--------------+--------------|
| COM3: (3E8h) | 4 | On | On |
|----------------+-------------+--------------+--------------|
| COM4: (2E8h) | 3 | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| AUTO ANSWER |
|------------------------------------------------------------|
| Setting | SW1/2 |
|--------------------------------------+---------------------|
| » Auto answer enabled | Off |
|--------------------------------------+---------------------|
| Auto answer disabled | On |
|------------------------------------------------------------|
| Note: S14 holds the state of this switch at the time power |
| turned on, or if a reset command is enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DTR |
|------------------------------------------------------------|
| Setting | SW1/1 |
|-------------------------------+----------------------------|
| » DTR normal | Off |
|-------------------------------+----------------------------|
| DTR forced high | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CD SIGNAL |
|------------------------------------------------------------|
| Setting | SW1/5 |
|-------------------------------+----------------------------|
| » CD normal | Off |
|-------------------------------+----------------------------|
| CD forced high | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SLOT 8 INSTALLATION |
|------------------------------------------------------------|
| Setting | SW1/6 |
|-------------------------------+----------------------------|
| » Normal installation | Off |
|-------------------------------+----------------------------|
| IBM XT slot 8 installation | On |
+------------------------------------------------------------+
Proprietary AT Command Set
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S13 |
|------------------------------------------------------------|
| Format | AT [cmds] S13? [cmds] |
|---------------+--------------------------------------------|
| Example: | ATS13?<CR> |
|---------------+--------------------------------------------|
| Default: | Read-only |
|---------------+--------------------------------------------|
| Range: | 0 - 222 |
|---------------+--------------------------------------------|
| Unit: | Bit-mapped |
|---------------+--------------------------------------------|
| Description: | Displays extended result codes, parity, |
| | data bits, and buffer overrflow. |
|------------------------------------------------------------|
| Bit | Value | Function |
|---------+-------+------------------------------------------|
| 0 | 0 | Not used. |
|---------+-------+------------------------------------------|
| 1 | 0 1 | Extended result codes disabled. |
| | | |
| | | Extended result codes enabled. |
|---------+-------+------------------------------------------|
| 2 | 0 1 | Parity disabled. |
| | | |
| | | Parity enabled. |
|---------+-------+------------------------------------------|
| 3 | 0 1 | Odd parity. |
| | | |
| | | Even parity. |
|---------+-------+------------------------------------------|
| 4 | 0 1 | 7 data bits. |
| | | |
| | | 8 data bits. |
|---------+-------+------------------------------------------|
| 5 | N/A | Not used. |
|---------+-------+------------------------------------------|
| 6 | 0 1 | Buffer is not full. |
| | | |
| | | Buffer overflow; ERROR result code sent. |
|---------+-------+------------------------------------------|
| 7 | 0 1 | Space parity. |
| | | |
| | | Mark parity. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S14 |
|------------------------------------------------------------|
| Format | AT [cmds] S14? [cmds] |
|----------------+-------------------------------------------|
| Example: | ATS14?<CR> |
|----------------+-------------------------------------------|
| Default: | Read-only |
|----------------+-------------------------------------------|
| Range: | 0 - 239 |
|----------------+-------------------------------------------|
| Unit: | Bit-mapped |
|----------------+-------------------------------------------|
| Description: | Displays the state of SW1/2, echo, result |
| | codes, tone/pulse dial, and speaker. |
|------------------------------------------------------------|
| Bit | Value | Function |
|----------+-------+-----------------------------------------|
| 0 | 0 1 | SW1/2 off (Auto-answer). |
| | | |
| | | SW1/2 on(Auto-answer). |
|----------+-------+-----------------------------------------|
| 1 | 0 1 | Echo disabled. |
| | | |
| | | Echo enabled. |
|----------+-------+-----------------------------------------|
| 2 | 0 1 | Result codes enabled. |
| | | |
| | | Result codes disabled. |
|----------+-------+-----------------------------------------|
| 3 | 0 1 | Numeric result codes. |
| | | |
| | | Verbose result codes. |
|----------+-------+-----------------------------------------|
| 4 | 0 | Not used. |
|----------+-------+-----------------------------------------|
| 5 | 0 1 | Tone dial |
| | | |
| | | Pulse dial |
|----------+-------+-----------------------------------------|
| 6 | 0 1 | Speaker disabled |
| | | |
| | | Speaker enabled until carrier signal is |
| | | detected. |
|----------+-------+-----------------------------------------|
| 7 | 0 1 | Speaker disabled. |
| | | |
| | | Speaker enabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT-MAPPED REGISTER S15 |
|------------------------------------------------------------|
| Format | AT [cmds] S15? [cmds] |
|--------------------+---------------------------------------|
| Example: | ATS15?<CR> |
|--------------------+---------------------------------------|
| Default: | Read-only |
|--------------------+---------------------------------------|
| Range: | 0 - 127 |
|--------------------+---------------------------------------|
| Unit: | Bit-mapped |
|--------------------+---------------------------------------|
| Description: | Displays baud rate, answer/originate, |
| | duplex, CD signal. |
|------------------------------------------------------------|
| Bit | Value | Function |
|-----------+----------------------+-------------------------|
| 1, 0 | 00 01 10 11 | 2400bps. |
| | | |
| | | 110bps. |
| | | |
| | | 300bps. |
| | | |
| | | 1200bps. |
|-----------+----------------------+-------------------------|
| 2 | 0 | Answer mode. |
| | | |
| | 1 | Originate mode. |
|-----------+----------------------+-------------------------|
| 3 | 0 | Half duplex. |
| | | |
| | 1 | Full duplex. |
|-----------+----------------------+-------------------------|
| 5, 4 | 00 01 10 11 | 2400bps. |
| | | |
| | | 110bps. |
| | | |
| | | 300bps. |
| | | |
| | | 1200bps. |
|-----------+----------------------+-------------------------|
| 6 | 0 | CD normal. |
| | | |
| | 1 | CD forced high. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| TEST MODES |
|------------------------------------------------------------|
| Format | AT [cmds] S16? [cmds] |
|---------------+--------------------------------------------|
| Example: | ATS16?<CR> |
|---------------+--------------------------------------------|
| Default: | Read-only |
|---------------+--------------------------------------------|
| 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. |
+------------------------------------------------------------+