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Can we use MVC instruction to move pack field to pack
field....which instruction you will use and why ?
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Answer Posted / rich hornak
MVC Will work but as explained you must compensate for different lengths.
The more practical instruction would be the ZAP Zero and Add Packed.
The ZAP will adjust for different lengths and propagate leading zeros when a smaller field is being moved to a larger field.
TOTAMT DC PL5'0'
NEWAMT DC PL3'0'
Current Value of TOTAMT X'453789225C'
Current Value of NEWAMT X'00100C'
ZAP Instruction
ZAP TOTAMT,NEWAMT
New Value of TOTAMT After ZAP
TOTAMT DC PL5'000000100C'
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