For pushing of flags and popping of flags in 8086, the instructions are :
Push F and Pop F
To solve this question, we need to understand the instructions related to the operations of the stack in the 8086 microprocessor with respect to the flag register. Let's explore the instructions available for pushing and popping flags in the 8086 microprocessor.
- Push F: This instruction is used to push the flag register onto the stack. The flag register contains the status flags that are useful for decision-making in a program, and this instruction saves the current CPU state.
- Pop F: This instruction pops the top of the stack into the flag register. It restores the flags to the state they were in when the flags were most recently pushed onto the stack.
The use of Push F and Pop F instructions allows the programmer to save and restore the state of the flags conveniently. This is particularly useful in scenarios such as interrupt handling, subroutines, and when preserving the state over certain operations.
Now, let's evaluate the options provided:
- Option 1: Push and Pop - These are general stack operations but do not specifically relate to the flags.
- Option 2: Push F and Pop F - These specifically allow the pushing and popping of the flag register, hence are the correct instructions for this operation.
- Option 3: Push and Pop F - A combination that does not accurately reflect the correct pair for handling flags.
- Option 4: None of the above - This is incorrect given that option 2 is the right answer.
Therefore, the correct answer is Push F and Pop F, as these instructions specifically handle the pushing and popping of the flag register in the 8086 microprocessor.
Similar Questions
$D_7$ $D_6$ $D_5$ $D_4$ $D_3$ $D_2$ $D_1$ $D_0$ In 8255 programmable peripheral interface device, if the port A and port B are to be set in a hand shake mode along with port C, what are the bits in the 8 bit control word to be set as 0 1 0.
The number system for the machine code of the microprocessor 8085 is
Which of the options in a multipurpose instruction used to implement the interrupt of 8085 and serial data input ?
Both 8155 and 8255 programmable peripheral interface ICs have the following common features :
(i) Programmable I/Os
(ii) Either port A or Port B can be set as either input or output ports.
(iii) One 14-bit down counter
(iv) AD0 – AD7 are multiplexed address/datalines.Each instruction in an assembly program has the following fields :
(i) Lable field
(ii) Operand field
(iii) Comment field
(iv) Mnemonic fieldPlease write the proper sequence of fields :
The mnemonic of 8085 processor indicate :
List – I List – II a. RLC i. Rotate Accumulator Right through carry b. RRC ii. Rotate Accumulator Left through carry c. RAR iii. Rotate Accumulator Left d. RAL iv. Rotate Accumulator Right Codes :
Match the following :
List – I (Pin terminals) List – II (Applications) a. SID, SOD i. Wait state b. READY ii. Serial data transfer c. TRAP iii. Address Latch Control d. ALE iv. Interrupt Codes :
Assertion (A) : In serial communication system, when the transmission of data goes in both ways, it is called full-duplex system. Now if two micro processors are connected in full duplex mode, the amount of data transmitted will be double to the amount of data in half-duplex mode connection.
Reason (R) : When the transmission of data goes in one way, it is called half-duplex system and when the data moves in both ways, it is called full duplex system.
The assembler directive used to give name to some value or symbol for 8086 ASM-86 is
Which of the following peripherals provide I/O facilities ?
i. 8279
ii. 8155
iii. 8259
iv. 8255
Important Questions from Microprocessors
An 8086 address bus is a/an _____ -bit bus
Match the columns.
Pin
Description
a. D 0-D 7
1. Reset Input
b. RESET
2. Data Lines
c. A 0,A 1
3. Internal Address
An 8 bit microcontroller has an external RAM with the memory map from 8000 H to 9FFF H. How many number of bytes can this RAM store?
In 8085 microprocessor, initially the number decimal 8 is stored. If instruction RAL is executed twice on this number, the final number stored will be
Which of the following 8085 microprocessor instructions occupies 3 bytes in memory?
