When a subroutine is called, the address of the instruction following the CALL instructions stored in/on the a. stack pointer b. accumulator c. program counter d. stack

When a subroutine is called, the address of the instruction following the CALL instructions  stored in/on the
a. stack pointer
b. accumulator
c. program counter
d. stack
by

1 Answer

Answer :

d. stack
by

Related questions

When the RET instruction at the end of subroutine is executed, a. the information where the stack is iniatialized is transferred to the stack pointer b. the memory address of the RET instruction is transferred to the program counter c. two data bytes stored in the top two locations of the stack are transferred to the program counter d. two data bytes stored in the top two locations of the stack are transferred to the stack pointer

Description : When the RET instruction at the end of subroutine is executed, a. the information where the stack is iniatialized is transferred to the stack pointer b. the memory address of the RET instruction is ... two data bytes stored in the top two locations of the stack are transferred to the stack pointer

Last Answer : c. two data bytes stored in the top two locations of the stack are transferred to the program counter

When subroutine is called contents of program counter is location address of __ instruction following call instruction is stored on _ __and program execution is transferred to __ address. a. Non executable, pointer and subroutine b. Executable, Stack and Main program Cc. Executable, Queue and Subroutine d. Executable, Stack and Subroutine

Description : When subroutine is called contents of program counter is location address of __ instruction following call instruction is stored on _ __and program execution is transferred to __ address. a. Non ... , Stack and Main program Cc. Executable, Queue and Subroutine d. Executable, Stack and Subroutine

Last Answer : d. Executable, Stack and Subroutine

In microprocessor the next instruction to be executed is stored in a) Program Counter b) Stack Pointer c) Memory Pointer d) Accumulator

Description : In microprocessor the next instruction to be executed is stored in a) Program Counter b) Stack Pointer c) Memory Pointer d) Accumulator

Last Answer : Ans: Program Counter

A stack pointer is a. a 16-bit register in the microprocessor that indicate the beginning of the stack memory. b. a register that decodes and executes 16-bit arithmetic expression. c. The first memory location where a subroutine address is stored. d. a register in which flag bits are stored

Description : A stack pointer is a. a 16-bit register in the microprocessor that indicate the beginning of the stack memory. b. a register that decodes and executes 16-bit arithmetic expression. c. The first memory location where a subroutine address is stored. d. a register in which flag bits are stored

Last Answer : a. a 16-bit register in the microprocessor that indicate the beginning of the stack memory.

The subprogram finish the return instruction recovers the return address from the: a. Queue b. Stack c. Program counter d. Pointer

Description : The subprogram finish the return instruction recovers the return address from the: a. Queue b. Stack c. Program counter d. Pointer

Last Answer : b. Stack

In 8085 name the 16 bit registers? a) Stack pointer b) Program counter c) a & b

Description : In 8085 name the 16 bit registers? a) Stack pointer b) Program counter c) a & b

Last Answer : c) a & b

Describe the functions of stack pointer and program counter of 8085.

Description : Describe the functions of stack pointer and program counter of 8085. 

Last Answer : Stack pointer: 1. It is a 16 bit register which is used to store the address of topmost filled memory location of stack memory. 2. SP always points current top of stack. 3. If data is ... of memory and in 8085 the address of memory is 16 bit. Hence program counter is 16 bit register.

Opcode is the machine instruction obtained from decoding instruction stored in. a. Stack pointer b. Address pointer Cc. Instruction register d. Incrementer

Description : Opcode is the machine instruction obtained from decoding instruction stored in. a. Stack pointer b. Address pointer Cc. Instruction register d. Incrementer

Last Answer : Cc. Instruction register

ACALL instruction allows specifying ______address in the instruction and calling subroutine within ______ program memory block. a) 2byte, 3K b) 11bit, 2K c) 9bit, 2K d) 1byte, 3K

Description : ACALL instruction allows specifying ______address in the instruction and calling subroutine within ______ program memory block. a) 2byte, 3K b) 11bit, 2K c) 9bit, 2K d) 1byte, 3K

Last Answer : c) 9bit, 2K

The processor uses the stack to keep track of where the items are stored on it this by using the: a. Stack pointer register b. Queue pointer register c. Both a & b d. None of these

Description : The processor uses the stack to keep track of where the items are stored on it this by using the: a. Stack pointer register b. Queue pointer register c. Both a & b d. None of these

Last Answer : a. Stack pointer register

The load instruction is mostly used to designate a transfer from memory to a processor register known as_________ A. Accumulator B. Instruction Register C. Program counter D. Memory address Register

Description : The load instruction is mostly used to designate a transfer from memory to a processor register known as_________ A. Accumulator B. Instruction Register C. Program counter D. Memory address Register

Last Answer : A. Accumulator

Which of the following instruction perform the move accumulator to external RAM of 16bit address? a) MOV @ DPTR, A b) MOVX @ Ri, A c) MOV A, @ Ri d) MOVX @ DPTR, A

Description : Which of the following instruction perform the move accumulator to external RAM of 16bit address? a) MOV @ DPTR, A b) MOVX @ Ri, A c) MOV A, @ Ri d) MOVX @ DPTR, A

Last Answer : c) MOV A, @ Ri

Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory address register b. Memory data register c. Instruction register d. Program counter

Description : Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory address register b. Memory data register c. Instruction register d. Program counter

Last Answer : d. Program counter

Which of the following registers is loaded with the contents of the memory location pointed by the PC? a. Memory address register b. Memory data register c. Instruction registers d. Program counter

Description : Which of the following registers is loaded with the contents of the memory location pointed by the PC? a. Memory address register b. Memory data register c. Instruction registers d. Program counter

Last Answer : c. Instruction registers

Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory address register b. Memory data register c. Instruction register d. Program counter

Description : Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory address register b. Memory data register c. Instruction register d. Program counter

Last Answer : d. Program counter

Which of the following registers is loaded with the contents of the memory location pointed by the PC? a. Memory address registers b. Memory data registers c. Instruction register d. Program counter

Description : Which of the following registers is loaded with the contents of the memory location pointed by the PC? a. Memory address registers b. Memory data registers c. Instruction register d. Program counter

Last Answer : c. Instruction register

The ___________ contains the address of the next instruction to be executed. a) IR b) PC c) Accumulator d) System counter

Description : The ___________ contains the address of the next instruction to be executed. a) IR b) PC c) Accumulator d) System counter

Last Answer : Answer: b Explanation: PC stands for program counter (It contains the address of the next instruction to be executed)

Which is used to store critical pieces of data during subroutines and interrupts: a. Stack b. Queue c. Accumulator d. Data register

Description : Which is used to store critical pieces of data during subroutines and interrupts: a. Stack b. Queue c. Accumulator d. Data register

Last Answer : a. Stack

Which register keeps tracks of the instructions in the program stored in memory? A. Address Register B. Index Register C. Program Counter D. None of the Above

Description : Which register keeps tracks of the instructions in the program stored in memory? A. Address Register B. Index Register C. Program Counter D. None of the Above

Last Answer : C. Program Counter

The contents of accumulator before CMA instruction is A5H. Its content after instructionexecution isa) A5H b) 5AH

Description : The contents of accumulator before CMA instruction is A5H. Its content after instructionexecution isa) A5H b) 5AH

Last Answer : b) 5AH

In an 8085 microprocessor, the instruction CMP B has been executed while the contentsof accumulator is less than that of register B. As a result carry flag and zero flag will berespectively (A) set, reset (B) reset, set (C) reset, reset (D) set, set

Description : In an 8085 microprocessor, the instruction CMP B has been executed while the contentsof accumulator is less than that of register B. As a result carry flag and zero flag will berespectively (A) set, reset (B) reset, set (C) reset, reset (D) set, set

Last Answer : (A) set, reset

What is the Result of RR A instruction if accumulator contains 1000 0000. a) 0000 0001 b) 0000 0000 c) 0100 0000 d) 0000 0010

Description : What is the Result of RR A instruction if accumulator contains 1000 0000. a) 0000 0001 b) 0000 0000 c) 0100 0000 d) 0000 0010

Last Answer : a) 0000 0001

Which of the following instruction perform as of indirect RAM to accumulator? a) MOV A, Rn b) MOV @Ri, A c) MOV A, @Ri d) MOV Rn, A

Description : Which of the following instruction perform as of indirect RAM to accumulator? a) MOV A, Rn b) MOV @Ri, A c) MOV A, @Ri d) MOV Rn, A

Last Answer : c) MOV A, @Ri

The stack pointer in the 8085 microprocessor is a: a) 16 bit register that points to stack memory locations b) 16 bit accumulator c) Memory location in the stack d) None of The Above

Description : The stack pointer in the 8085 microprocessor is a: a) 16 bit register that points to stack memory locations b) 16 bit accumulator c) Memory location in the stack d) None of The Above

Last Answer : a) 16 bit register that points to stack memory locations

What is the name of a memory buffer used to accommodate a speed differential ? (1) Cache (2) Stack Pointer (3) Accumulator (4) Disc

Description : What is the name of a memory buffer used to accommodate a speed differential ? (1) Cache (2) Stack Pointer (3) Accumulator (4) Disc

Last Answer : Cache

SP stand for: a. Stack pointer b. Stack pop c. Stack push d. None of these

Description : SP stand for: a. Stack pointer b. Stack pop c. Stack push d. None of these

Last Answer : a. Stack pointer

SP stands for: a. Status pointer b. Stack pointer c. a and b d. None of these

Description : SP stands for: a. Status pointer b. Stack pointer c. a and b d. None of these

Last Answer : b. Stack pointer

Which is the common program control instructions are. a Branch b. Jump c Call a subroutine d. Return e. Allof these f None of these

Description : Which is the common program control instructions are. a Branch b. Jump c Call a subroutine d. Return e. Allof these f None of these

Last Answer : e. Allof these

Define stack and explain stack related instructions

Description : Define stack and explain stack related instructions

Last Answer : The stack is a group of memory locations in the R/W memory thatis used for the temporary storage of binary information during the execution of the program. The stack related instructions are PUSH & POP

In immediate addressing the operand is placed a. in the CPU register b. after OP code in the instruction c. in memory d. in stack

Description : In immediate addressing the operand is placed a. in the CPU register b. after OP code in the instruction c. in memory d. in stack

Last Answer : b. after OP code in the instruction

___uses the stack to store return address of subroutine: a. CPU b. Microprocessor c. register d. memory

Description : ___uses the stack to store return address of subroutine: a. CPU b. Microprocessor c. register d. memory

Last Answer : b. Microprocessor

Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory Address Register b. Memory Data Register c. Instruction Register d. Program Register

Description : Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory Address Register b. Memory Data Register c. Instruction Register d. Program Register

Last Answer : d. Program Register

Various machine level components are: a. Address register > Program counter c Data register d. Accumulator register e. Memory of 2K,16 bits/word RAM f. Multiplexers g. Allof these

Description : Various machine level components are: a. Address register > Program counter c Data register d. Accumulator register e. Memory of 2K,16 bits/word RAM f. Multiplexers g. Allof these

Last Answer : g. Allof these

A storage area used to store data to a compensate for the difference in speed at which the different units can handle data is a. Memory b. Buffer c. Accumulator d. Address

Description : A storage area used to store data to a compensate for the difference in speed at which the different units can handle data is a. Memory b. Buffer c. Accumulator d. Address

Last Answer : b. Buffer

Which of the following instruction is of logical instructions? i) CPL A ii) JC rel iii) DA A iv) ANL A, Rn v) RR A vi) CPL bit a) i, v b) v, iii, I c) iv, ii d) v, iii, ii

Description : Which of the following instruction is of logical instructions? i) CPL A ii) JC rel iii) DA A iv) ANL A, Rn v) RR A vi) CPL bit a) i, v b) v, iii, I c) iv, ii d) v, iii, ii

Last Answer : c) iv, i

IR stands for: a. Intel register b. In counter register c. Index register d. Instruction register

Description : IR stands for: a. Intel register b. In counter register c. Index register d. Instruction register

Last Answer : d. Instruction register

The _stack can be 4-word memory addressed by 2 bits from an up/down counter known as the stack pointer: a. FIFO b. PIPO c. SISO d. LIFO

Description : The _stack can be 4-word memory addressed by 2 bits from an up/down counter known as the stack pointer: a. FIFO b. PIPO c. SISO d. LIFO

Last Answer : d. LIFO

Return instruction is written in_ to written to main program: a. Subroutine b. Main program c. Botha &b d. None of these

Description : Return instruction is written in_ to written to main program: a. Subroutine b. Main program c. Botha &b d. None of these

Last Answer : a. Subroutine

A basic instruction that can be interpreted by computer generally has ________ A. An operand and an address B. decoder and an accumulator C. Sequence register and decoder D. None of the Above

Description : A basic instruction that can be interpreted by computer generally has ________ A. An operand and an address B. decoder and an accumulator C. Sequence register and decoder D. None of the Above

Last Answer : A. An operand and an address

Instructions and memory address are represented by a. Character code b. Binary codes c. Binary word d. Parity bit

Description : Instructions and memory address are represented by a. Character code b. Binary codes c. Binary word d. Parity bit

Last Answer : b. Binary codes

The advantage of memory mapped I/O over I/O mapped I/O is, a) Faster b) Many instructions supporting memory mapped I/O c) Require a bigger address decoder d) All the above

Description : The advantage of memory mapped I/O over I/O mapped I/O is, a) Faster b) Many instructions supporting memory mapped I/O c) Require a bigger address decoder d) All the above

Last Answer : d) All the above

Which of the following registers is used to keep track of address of the memory location where the next instruction is located? A) Memory address register B) Memory data register C) Instruction register D) Program counter

Description : Which of the following registers is used to keep track of address of the memory location where the next instruction is located? A) Memory address register B) Memory data register C) Instruction register D) Program counter

Last Answer : Answer : D

Which of the following registers is loaded with the contents of the memory location pointed by the PC? A) Memory address registers B) Memory data registers C) Instruction register D) Program counter

Description : Which of the following registers is loaded with the contents of the memory location pointed by the PC? A) Memory address registers B) Memory data registers C) Instruction register D) Program counter

Last Answer : Answer : C

Content of the program counter is added to the address part of the instruction in order to obtain the effective address is called_______ A. relative address mode. B. index addressing mode. C. register mode. D. implied mode.

Description : Content of the program counter is added to the address part of the instruction in order to obtain the effective address is called_______ A. relative address mode. B. index addressing mode. C. register mode. D. implied mode.

Last Answer : A. relative address mode.

The instruction fetch operation is initiated by loading the contents of program counter into the and sends _ request to memory: a. Memory register and read b. Memory register and write c. Data register and read d. Address register and read

Description : The instruction fetch operation is initiated by loading the contents of program counter into the and sends _ request to memory: a. Memory register and read b. Memory register and write c. Data register and read d. Address register and read

Last Answer : d. Address register and read

The contents of the program counter isthe __——__—oof the instruction to be run. a. Data b. Address c. Counter d. None of these

Description : The contents of the program counter isthe __——__—oof the instruction to be run. a. Data b. Address c. Counter d. None of these

Last Answer : b. Address

The instruction read from memory is then placed in the ___and contents of program counter is __ so that it contains the address of_ __ instruction in the program. a. Program counter, incremented and next b. Instruction register, incremented and previous c. Instruction register, incremented and next d. Address register, decremented and next

Description : The instruction read from memory is then placed in the ___and contents of program counter is __ so that it contains the address of_ __ instruction in the program. a. Program counter, ... incremented and previous c. Instruction register, incremented and next d. Address register, decremented and next

Last Answer : c. Instruction register, incremented and next

Who change the address in the program counter and cause the flow of control to be altered: a Shift manipulation b. Circular manipulation c. Program control instruction d. __ Allof these

Description : Who change the address in the program counter and cause the flow of control to be altered: a Shift manipulation b. Circular manipulation c. Program control instruction d. __ Allof these

Last Answer : c. Program control instruction

Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory address register b. Memory data register c. Instruction register d. Program counter

Description : Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory address register b. Memory data register c. Instruction register d. Program counter

Last Answer : Program counter

Which of the following registers is loaded with the contents of the memory location pointed by the PC? a. Memory address registers b. Memory data registers c. Instruction register d. Program counter

Description : Which of the following registers is loaded with the contents of the memory location pointed by the PC? a. Memory address registers b. Memory data registers c. Instruction register d. Program counter

Last Answer : Instruction register