The
invocation of a CICS® assembler-language
application program obeys system standards, which means that on entry to the
application program, registers 1, 15, 14, and 13 contain the following:
- Register 1 contains the address of the parameter list; there are at least
two entries in this list, as follows:
- Address of the EIB (EXEC interface block)
- Address of the COMMAREA; if no COMMAREA, entry is X'00000000'
- Register 15 contains the address of the entry point
- Register 14 contains the address of the return point
- Register 13 contains the address of the save area.
All other registers are undefined.