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User-Written Edit Modules › Coding Considerations › System DSECTs

System DSECTs

The following table lists the system DSECTS used during execution of a user-written edit module and the copy book names used to name the DSECTS:

DSECT Module

Copy book name

Purpose

IBH

COPY #IBHDS

Provides the terminal input buffer header in the buffer chain

MCE

COPY #MCHDS

Provides the map control element for the map

MRB

COPY #MRBDS

Provides the map request block and map request element for the map

PTE

COPY #PTEDS, #PTXDS

Provides the physical terminal element

The macro library installed with CA IDMS contains all necessary DSECT definitions.

Note: When running your User-Written Edit Modules in SYSTEM MODE, R9 and R10 must point to the TCE and CSA at the time of any DC request. #CSADS must be copied in order to utilize it.

Note: For more information on DSECT definitions, see the CA ADS DSECT Reference Guide.