What is the use of Xchg instruction?

In 8085 Instruction set, there is one mnemonic XCHG, which stands for eXCHanGe. This is an instruction to exchange contents of HL register pair with DE register pair. This instruction uses implied addressing mode. As it is1-Byte instruction, so It occupies only 1-Byte in the memory.

What is the instruction XTHL mean?

eXchange Top of stack with HL
In 8085 Instruction set, XTHL is a mnemonic that stands for “eXchange Top of stack with HL”. This instruction exchanges the contents of the top two locations of the stack with the contents of register pair HL.

What does the instruction PCHL in 8085 do Mcq?

PCHL: Load program counter with HL contents. The contents of registers H and L are copied into the program counter.

What is PCHL?

PCHL. Prevalence of Congenital Hearing Loss.

How does Xchg instruction Work Can you you use Xchg instruction with 64 bit data?

The XCHG instruction can also be used instead of the BSWAP instruction for 16-bit operands. In 64-bit mode, the instruction’s default operation size is 32 bits. Using a REX prefix in the form of REX. R permits access to additional registers (R8-R15).

What happens when HLT instruction is executed in 8085 processor?

In 8085 Instruction set, HLT is the mnemonic which stands for ‘Halt the microprocessor’ instruction. In such a case, it executes the corresponding interrupt service subroutine depending upon the interrupt number and then it continues with the instruction after the HLT instruction. …

What is PSW in 8086 explain in detail?

The current state of processor is stored in a register called Processor Status Word (PSW). The PSW contains bits which indicate such things as whether the previous arithmetic operation produced a positive, negative or zero result. The 8086 microprocessor has 16-bit PSW.

Which of the following statements regarding 8085 interrupts is false?

Which of the following statements regarding 8085 interrupts is FALSE? An interrupt can either be a maskable or a non-maskable one. An interrupt is serviced only after the microprocessor completes the execution of its current program. An interrupt can either be a vectored or a non-vectored one.

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