For a given task, STCBDUCV has the virtual address of the DUCT. The real address analog of that value is placed into control register 2 at dispatch.
The principles of operation describes the format of the DUCT. The DUCT the real address of the access list, specifically, offset x'10' bits 1-24 with seven zeroes appended on the right form the 31-bit real address of the start of the dispatchable unit's access list. The format of the access list is also described in the PoOp. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
