Microprocessor
After RESET 8255 will be in

 mode 0; all ports are output
 mode 2
 mode 0; all ports are input
 unchanged condition

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Microprocessor
In 8085

P flag is reset when the result has even parity
P flag is set when the result has even parity
P flag is reset when the result has odd parity
P flag is set when the result has odd parity

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