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Example: MODCB macro (modify a request parameter list) z/OS DFSMS Macro Instructions for Data Sets SC23-6852-02 |
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In this example, a MODCB macro is used to modify the record length field in a request parameter list. This example shows the one exception to GENCB, MODCB, SHOWCB, and
TESTCB building a parameter list and passing it to the control block
manipulation module in register 1. The RPL address (in register 2)
is loaded into register 1 and the RECLEN value (in register 3) is
loaded into register 0. These registers are passed to the control
block manipulation macro. This occurs when the LIST, EXECUTE, or GENERATE
form of the MODCB macro is not used and the only parameter specified
other than RPL, is RECLEN.
The MODCB macro's parameters are:
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Copyright IBM Corporation 1990, 2014
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