Which instruction is not possible in 8085?
Discussion Forum
| Que. | Which of the following instruction is not possible in 8085? |
|---|---|
| b. | POP B |
| c. | POP D |
| d. | POP 30 H |
| Answer:POP 30 H |
Which instructions do not perform any operation?
Explanation: NOP is the No operation.
How many instructions are there in 8085?
74 instructions
Which register are not programmable in 8085 microprocessor?
To define Temporary Register, we can mention that it is an 8-bit non-programmable resister used to hold data during an arithmetic and logic operation (temporary resister is used to hold intermediate result).
Is a 16 bit register for 8085 microprocessor?
The stack pointer in the 8085 microprocessor is a 16-bit register that stores the address of the top of stack memory. The value of the stack pointer is decremented by 2 in PUSH operation.
Which of the following register pair can be directly stored in memory?
| Page-16 | |
|---|---|
| 236)Which of the following register pairs can be directly stored in memory? | |
| AB | BC |
| HL | DE |
| Answer : | |
How many register pair are there in 8085?
A 8085 microprocessor, is a second generation 8-bit microprocessor and is the base for studying and using all the microprocessor available in the market. The 8085 has six general-purpose registers to store 8-bit data; these are identified as- B, C, D, E, H, and L.
Why stack pointer is required?
A stack pointer is a small register that stores the address of the last program request in a stack. When a new data item is entered or “pushed” onto the top of a stack, the stack pointer increments to the next physical memory address, and the new item is copied to that address.
What is stack pointer used for?
The Stack Pointer (SP) register is used to indicate the location of the last item put onto the stack. When you PUT something ONTO the stack (PUSH onto the stack), the SP is decremented before the item is placed on the stack.
What is stack with diagram?
Stack is an ordered list of the same type of elements. It is a linear list where all insertions and deletions are permitted only at one end of the list. Stack is a LIFO (Last In First Out) structure. In a stack, when an element is added, it goes to the top of the stack.
What is stack and its types?
A stack is an Abstract Data Type (ADT), commonly used in most programming languages. Likewise, Stack ADT allows all data operations at one end only. At any given time, we can only access the top element of a stack. This feature makes it LIFO data structure. LIFO stands for Last-in-first-out.
What is the difference between stack and stack pointer?
The stack is a LIFO (last in, first out) data structure implemented in the RAM area and is used to store addresses and data when the microprocessor branches to a subroutine. The Stack Pointer register will hold the address of the top location of the stack. …
How many pointers are used in queue?
two pointers
Is stack a register?
The stack in digital computers is essentially a memory unit with an address register that can count only (after an initial value is loaded into it). The register that holds the address for the stack is called a stack pointer (SP) because its value always points at the top item in the stack.