execute channel program การใช้

• In addition, SVS provides the Execute Channel Program in Real Storage ( EXCVR ) SVC for privileged applications that do their own paged fixing and build their own IDA lists.
• SVS provides a CCW translation service as part of the Execute Channel Program ( EXCP ) SVC . EXCP will do any necessary page fixing, allocate storage for IDA lists, translate virtual addresses to real, put the translated addresses into the appropriate IDA words and put the real addresses of the IDA lists into the translated CCW's.