BPCS Infrastructure

BPCS can run in a variety of different Infrastructures:

RPG vs. RPG from AS/SET

Once upon a time 100% of BPCS was written by human beings, then AS/SET was invented to support BPCS able to run on other platforms than the 400, such as UNIX. Over time, less and less of BPCS was written in 400 programming languages, so that access to AS/SET became more critical. In later versions, SSA does not release the RPG source code, whether it comes from human programming, or is generated thru AS/SET.

Green Screen vs. Client Server

• 100% Twinax Green Screen
• mixture of Twinax and access thru PC GUI such as Client Access
• 100% Client Access used to access the Green Screen software
• A version of BPCS in which some or all of the programs have been re-written to function such that some of the application software runs on the PC and some runs on the 400.
• Full Client Server is the name for version of BPCS in which 100% of it is that way.
• Mixed Mode is the name for version of BPCS in which we support Twinax Green Screen and JOBQ and can access BPCS via PC GUI that emulates the Green Screen
• We can also have a mixture in which some of the software is running Mixed Mode and some is running Client Server.
• Whatever mixture is on a particular 400, this imposes Infrastructure demands on the 400, and there is a large challenge involved in converting from one reality to another.

When contemplating switching from one mixture to another, which typically orrurs in a conversion to a more advanced version of BPCS, it is important to understand the significance of the infrastructure differences.