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nkothako
Active User
Joined: 26 Nov 2008 Posts: 125 Location: chennai
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Hey,
Is someone aware how the mainframe utilities are developed
ex: IDCAMS,IKJEFT01 etc.,
Please give me an idea which technologies used. |
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enrico-sorichetti
Superior Member
Joined: 14 Mar 2007 Posts: 10872 Location: italy
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the question is clear as mud
but ...
generally IBM software is developed using ASSEMBLER or PL/X-390
( before that was PL/X-370 and before that was PL/AS and before that PL/S )
( an IBM internal use only HLL with a PL/I like syntax with additional clauses for REGISTER management and ASSEMBLER inlining with a pretty powerful MACRO language)
to see how a structure is coded in PL/xx
use ISPF to VIEW SYS1.MACLIB(CVT)
then enter the commands
EXCLUDE ALL
FIND '*' 1 ALL
scroll down until You see some PL/I like statements
the % stuff are macro/preprocessor stetements
good lurking
for a better examples do the same on SYS1.SAMPLIB(ACYCMS3A)
where You can see some register utilization directives and assembler inlining |
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