Implementing User Programs › Control Subsystems › Start a Subsystem

Start a Subsystem

A subsystem must be started before it can accept work. To start a subsystem, use the SUBSYS START command. This command is used to start a defined or inactive subsystem. A subsystem can also be automatically started when it is defined.

When a subsystem is started, the following processing occurs:

• A small part of your product is attached
• An initialization of the attached product code occurs
• If the subsystem has PARMLIST=NEW in effect, an initialization call is made to the subsystem code [NCPFFUNC = NCPFFSIN (8)].

The subsystem is now allowed to accept calls (&CALL statements).