Installing Online Interfaces › How to Configure the Online Interfaces Without CA MSM › TSO, ISPF, CA Roscoe and Cross-Memory Address Spaces

TSO, ISPF, CA Roscoe and Cross-Memory Address Spaces

TSO, ISPF, or CA Roscoe cross‑memory access involves address spaces and subtasks as follows:

• TSO or CA Roscoe address spaces

  The TSO command, ISPF, or CA Roscoe application program resides here. If ISPF/XMS is being used with ISPF split-screen active, up to two sessions can be executing at the same time, to the same database or different databases.

• The XMS support subtask

  This subtask is started when XMSSUB=YES input parameter is used when starting an XMS address space. The subtask can be in a separate XMS address space, or it can share the address space with XMS or VTAM sessions.

  • The XMSSUB=YES must only be used in an XMS address space with a default subsystem ID (SUBSYS=XMC0 or not specified).
  • If multiple XMS address spaces are started, only one can have the XMSSUB=YES specified.

  Note: All IMS/DC,TSO/XMS, ISPF/XMS, and CA Roscoe/XMS sessions share the same XMS subtask.

• XMS address spaces

  The XMS regions must have the XMS=YES parameter to make them accessible.

  Note: The SUBSYS= parameter must match the EC0XMCTR table entry for the database.

  Multiple address spaces can be used if needed.