CA Dynam for VSE User Guide

Unit Record Simulation
Example
// DLBL FISYS04,'PRINT.OUTPUT.DISK.DATA',7,SD,BLKSZ=OPT,FIOPT=(DB),SYS008
// EXTENT SYS008,3350WK,1,0,19,50
// ASSGN SYS008,DISK,VOL=3350WK,SHR
DTFDI is the type of DTF normally used by IBM utilities, compilers, other utility
software, and sometimes by user-written Assembler programs, to process unit
record I/O. It always specifies a system logical unit (SYSIPT,SYSLST, and so
on). CA Dynam/FI can normally process the unit record I/O of these programs.
For DTFDI, and for DTFCP that use a system logical unit, the unit record
file names are always as follows:
FISYSIN
FISYSLS
FISYSPH
For SYSIPT
For SYSLST
For SYSPCH
Always use an overriding programmer logical unit with SYSIPT, SYSLST and
SYSPCH files; choose one that is unused by the program which will utilize the
converted JCL. This prevents the problems associated with the opening and
closing of system logical units when these logical units are assigned to disk.
Example
JCL before CA Dynam/FI:
// DLBL IJSYSLS,'PRINTED.LIST.OUTPUT',2,SD
// EXTENT SYSLST,SCRTCH,1,0,256,10
ASSGN SYSLST,DISK,VOL=SCRTCH,SHR
(opens SYSLST)
// EXEC FCOBOL,SIZE=256K
.
.
CLOSE SYSLST,D
(required to close SYSLST) JCL to
utilize CA Dynam/FI:
// DLBL FISYSLS,'PRINTED.LIST.OUTPUT',2,SD,BLKSZ=OPT,SYS008
// EXTENT SYS008,SCRTCH,1,0,256,10
// ASSGN SYS008,DISK,VOL=SCRTCH,SHR
// EXEC FCOBOL,SIZE=256K
.
.
Chapter 6: Controlling File Independence 6–5