Microprocessor
HLDA signal in 8085 performs the following operation:

 Indicates that another master is requesting the use of the address and data buses.
 Hold the data in the accumulator until the microprocessor is turned OFF.
 Indicates that the CPU has not received the HOLD request.
 Indicates that the CPU has received the HOLD request and that it will relinquish the bus in the next clock cycle.

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Microprocessor
In 8085

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

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Microprocessor
In 8085 microprocessor system with memory mapped I/O, which of the following is true?

 Arithmetic and logic operations can be directly performed with the I/O data
 Devices are accessed using IN and OUT instructions
 There can be maximum of 256 input devices and 256 output devices
 Devices have 8-bit address line

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