The 3270 emulator should initialize the DL-BASE and then call the dynamic access module (DMOD) to obtain the necessary configuration information. This also registers the user name with the DMOD. It can then obtain further system information such as the SNA Server version number, if required.
The functions involved are:
| sbpuinit | Initialize the DL-BASE. |
| sepdcrec | Get configuration information. |
| sepdgetinfo | Get system information. |
The sbpuinit entry point should always be called before any other DL-BASE/DMOD entry points except SNAGetVersion. For new emulators, sepdcrec should be called after sbpuinit. (Because of the order of calls used in older emulators, a call to sepdcrec before sbpuinit is still supported, but this order is not recommended.)