Configuring an Enterprise Server instance for Assembler support: 
               	 
            
 
            	 
             
               		
               -  Ensure that your application is compiled - you use 
                  		  Enterprise Developer to develop applications. 
                  		
               
- Create a Mainframe Subsystem enterprise server instance 
                  		
               
- Configure the enterprise server for Assembler. 
                  		
               
- Configure the server for any other technologies that your application uses such as CICS, JCL, and IMS.
                  		
               
- Start the enterprise server instance - from the 
                  		  Enterprise Server Administration home page or with the 
                  		  casstart from the command line. 
                  		
               
- Use the Enterprise Server Monitoring and Control (ESMAC) tool to maintain resource definitions and to monitor and control your application. 
                  		
               
- Use Micro Focus Rumba TN3270 terminal emulator to connect to your application
                  		
               
Also, check the following resources: