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Alter the contents of flag register in 8085

Statement: Write a set of instructions to alter the contents of flag register in 8085.

PUSH PSW: Save flags on stack
POP H: Retrieve flags in 'L'
MOV A, L :Flags in accumulator
CMA:Complement accumulator
MOV L, A:Accumulator in 'L'
PUSH H:Save on stack
POP PSW:Back to flag register
HLT:Terminate program execution

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Alter the contents of flag register in 8085