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Most register in the machine have two way of compatibility that MAR or the other hand is always used as destination you only copy to the MAR clearly why is this so?
The MAR (Memory Address Register) is typically used as the destination register for memory-related operations because it holds the memory address that is being accessed. When copying data to the MAR, it is essential to ensure precise memory addressing and avoid any inadvertent changes to the address value. Assigning the MAR as the only destination for copying helps maintain the integrity of memory operations and prevents unintentional alterations to memory addresses.
What is a memory register?
A memory mapped register is a register that has its specific address stored in a known memory location.
What is a memory mapped register?
A memory mapped register is a register that has its specific address stored in a known memory location.
How do you the move content of register to memory?
To move the content of a register to memory, you typically use the MOV instruction in assembly language. The syntax generally involves specifying the destination (memory address) and the source (register). For example, in x86 assembly, you might write MOV [memory_address], register_name. This instruction transfers the data from the specified register into the designated memory location.
How does the Fetch Decode Execute work?
The program counter in the processor holds the address of the next instruction needed from main memory. The program counter copies its contents into the memory address register. The memory address register then sends the address along the address bus to main memory and the contents of the memory location specified by the address are sent along the data bus to the memory buffer register. The contents of the memory buffer register are then copied to the current instruction register where they are decoded and executed.
How does fetch decode cycle work?
The program counter in the processor holds the address of the next instruction needed from main memory. The program counter copies its contents into the memory address register. The memory address register then sends the address along the address bus to main memory and the contents of the memory location specified by the address are sent along the data bus to the memory buffer register. The contents of the memory buffer register are then copied to the current instruction register where they are decoded and executed.
How does fetch decode execute cycle work?
The program counter in the processor holds the address of the next instruction needed from main memory. The program counter copies its contents into the memory address register. The memory address register then sends the address along the address bus to main memory and the contents of the memory location specified by the address are sent along the data bus to the memory buffer register. The contents of the memory buffer register are then copied to the current instruction register where they are decoded and executed.
What is the Process (Fetch Decode Execute Store)?
The program counter in the processor holds the address of the next instruction needed from main memory. The program counter copies its contents into the memory address register. The memory address register then sends the address along the address bus to main memory and the contents of the memory location specified by the address are sent along the data bus to the memory buffer register. The contents of the memory buffer register are then copied to the current instruction register where they are decoded and executed.
What do you mean by MAR and MBR in computer organization?
MAR-memory address register used stored the address of the memory loaction MBR- memory buffer register is the actully data.
What is the different between SHLD and LHLD in 8085?
LHLD 2600h is use to store data of 2600h in L register and data of 2601h in H register While SHLD 2600h is use to store data of L in 2600h memory location and data of H in 2601h memory location data of H register
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 memory address register of Intel 8085?
8 bits
