0
The program counter (PC) and the stack pointer (SP).
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoIndex Register
Add your answer:
Earn +20 pts
What are the Functions of the memory buffer register?
In other words, MAR holds the memory location of data that needs to be accessed. When reading from memory, data addressed by MAR is fed into the MDR (memory data register) and then used by the CPU. When writing to memory, the CPU writes data from MDR to the memory location whose address is stored in MAR. The Memory Address Register is half of a minimal interface between a microprogram and computer storage. The other half is a memory data register. Far more complex memory interfaces exist, but this is the least that can work.
What is IR in microprocessor?
it's instruction pointer register it's in cpu and it holds the instruction which the cpu fetching it from memory
What ismeant by MAR MDR in computer?
MAR is memory address register. MDR is memory data register. These are registers part of the control unit (CU) in your cpu.
Advantage of using a CPU register over memory locations?
CPU register is faster than memory loacations
What stores the data that the CPU actively uses?
The CPU registers. If the data is too large to physically store in a register, the register stores the memory address containing the data instead (usually a RAM address but could be any address in the physical address space, including ROM and graphic memory). On a 32-bit system, data registers need to be at least 32-bits long in order to store memory addresses.
Fad and fad and fadp are all what?
These are different types of memory registers in a computer's central processing unit (CPU). The FAD register is used for storing the address of a memory location, the FADP register is used for storing the address of an instruction, and the FADP register is used for storing the address of the next instruction to be executed.
What is a memory register?
A memory mapped register is a register that has its specific address stored in a known memory location.
Instruction cycle with indirect?
In an instruction cycle with indirect addressing, the CPU fetches the instruction, decodes it to determine the memory address of the operand stored in a register, fetches the operand from the memory location pointed to by the register, and executes the instruction using the operand. Finally, the CPU stores the result back in memory if needed. This extra step of fetching the operand based on the indirect memory address adds complexity to the instruction cycle.
What is the definition of fetch cycle?
Fetch cycle is defined as a part of instruction cycle in which data is fetched from the memory pointed by Holds the address of a memory block to be read from or written to) and stores the data in MDR( a two-way register that holds data fetched from memory (and ready for the CPU to process) or data waiting to be stored in memory) for further processing. Instruction cycle= Fetch cycle+ Execute cycle
What is the difference between register addressing mode and register indirect addressing mode?
Ans: In the register addressing mode the operands are in registers which reside within the CPU. Register-mode instructions are 1-byte instructions and can be executed within the CPU without the need to reference memory for operands. But in the Register-indirect addressing mode the instruction specifies a register or a pair of registers in the processor whose contains give the address of the operand in memory. This mode uses 1-byte instructions even though the operand is in memory. Before using a register-indirect mode instruction, the programmer must ensure that the address of the operand is placed in the processor register with a previous transfer-type instruction. A reference to the register is then equivalent to specifying a memory address.
Why register to register instruction is faster?
Register to register addressing mode is faster because you don't have to do an extra memory access cycle or more.Register to register addressing mode is faster because:Registers are part of and are directly accessibility by the CPU assembly.They electronics that make up a register use more expensive but faster circuitry.Since it does not require memory access, the steps and time involved in memory address decoding and memory access are skipped.
What is the format of each register used in computer and explain it?
register is internal memory inside the cpu.
