The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

irrelevant

all bits reset (i.e. 00H)

same as the content of A7-A0

all bits set (i.e. FFH)

irrelevant

all bits reset (i.e. 00H)

same as the content of A7-A0

all bits set (i.e. FFH)

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Microprocessor
I)A total of about one million bytes can be directly addressed by the 8086 microprocessor II)8086 has thirteen 16-bit registers III)8086 has eight flags IV)Compared to 8086, the 80286 provides a higher degree of memory protection Which one of the statements given above are correct?

2,3&4

1,2 & 3

1,2 & 4

1,3 &4

2,3&4

1,2 & 3

1,2 & 4

1,3 &4

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Microprocessor
The processor status word of 8085 microprocessor has five flags namely:

S, Z, AC, P, CY

S, Z, OV, P, CY

S, OV, AC, P, CY

S, Z, AC, P, OV

S, Z, AC, P, CY

S, Z, OV, P, CY

S, OV, AC, P, CY

S, Z, AC, P, OV

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Microprocessor
At the beginning of a fetch cycle, the contents of the program counter are

transferred to memory data register.

incremented by one.

transferred to memory address register .

transferred to address bus.

transferred to memory data register.

incremented by one.

transferred to memory address register .

transferred to address bus.

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Microprocessor
When RET instruction is executed by any subroutine then

without any operation, the calling program would resume from instruction immediately following the call instruction and also the PC will be incremented after the execution of the instruction.

the top of the stack will be popped out and assigned to the PC.

without any operation, the calling program would resume from instruction immediately following the call instruction.

the PC will be incremented after the execution of the instruction.

without any operation, the calling program would resume from instruction immediately following the call instruction and also the PC will be incremented after the execution of the instruction.

the top of the stack will be popped out and assigned to the PC.

without any operation, the calling program would resume from instruction immediately following the call instruction.

the PC will be incremented after the execution of the instruction.

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Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

PUSH A

PUSH PSW

POP PSW

PUSH SP

PUSH A

PUSH PSW

POP PSW

PUSH SP

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Microprocessor

Microprocessor The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

Microprocessor I)A total of about one million bytes can be directly addressed by the 8086 microprocessor II)8086 has thirteen 16-bit registers III)8086 has eight flags IV)Compared to 8086, the 80286 provides a higher degree of memory protection Which one of the statements given above are correct?

Microprocessor The processor status word of 8085 microprocessor has five flags namely:

Microprocessor At the beginning of a fetch cycle, the contents of the program counter are

Microprocessor When RET instruction is executed by any subroutine then

Microprocessor In order to save accumulator value on the stack, which of the following instruction may be used

Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

Microprocessor
I)A total of about one million bytes can be directly addressed by the 8086 microprocessor II)8086 has thirteen 16-bit registers III)8086 has eight flags IV)Compared to 8086, the 80286 provides a higher degree of memory protection Which one of the statements given above are correct?

Microprocessor
The processor status word of 8085 microprocessor has five flags namely:

Microprocessor
At the beginning of a fetch cycle, the contents of the program counter are

Microprocessor
When RET instruction is executed by any subroutine then

Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used