Rational Developer for System z
Enterprise COBOL for z/OS, Version 4.1, Compiler and Runtime Migration Guide


When moving from the OS/VS COBOL run time

Table 1 shows estimated complexity ratings for conversions of specific program attributes:

Table 1. Complexity ratings for programs running under the OS/VS COBOL run time
Program attribute Complexity rating
Compiled with NORES and link-edited with OS/VS COBOL 0
CICS online 1
Link-editing programs using ILBOSTP0 with the assembler driver 3
IMS online 5
Mixed RES and NORES programs 5
ISPF program 7
Called by assembler routine with a LINK SVC 7
CICS (if using dynamic CALL statements from OS/VS COBOL programs) 7
Assembler programs that do not follow normal save area conventions. For details, see Determining requirements for calling and called assembler programs. 8
ILC between OS/VS COBOL programs and PL/I programs 8
ILC between OS/VS COBOL programs and FORTRAN programs 8
Multiple load module application, where the main module has OS/VS COBOL NORES programs and no Enterprise COBOL or VS COBOL II programs are included in the main module. 10
Uses QUEUE runtime option 10
Assembler programs that issue a STAE or SPIE 10
Calls assembler routines that do not have valid 31-bit addresses in Register 13 for save area changes. 10
Assembler programs that are coded based on the internals of the ILBO routines 10
For additional details, see:

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