Register indirect addressing is a mode of addressing in computer architecture where the address of the operand is held in a register rather than being specified directly in the instruction. When an instruction uses register indirect addressing, the CPU accesses the memory location pointed to by the register to retrieve or store data. This approach allows for more flexible and efficient memory access, as the address can be easily modified by changing the value in the register. It is commonly used in assembly language and low-level programming for tasks like pointer manipulation.
I believe it is the Load A instruction- Load the A register. The operand would contain the value to load into the register, or if indirect, it would point to the address where the value is contained. indirect addressing can be relative or absolute.
its register indirect with displacement.
An indirect address is an address contained in a register or memory location, instead of in the instruction itself. In the 8085, the most common form is to load or calculate an address in the HL register, and then access the memory pointed to by HL using the M register designation, such as MOV A,M.
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.
literal and absolute direct are the registers
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.
DI is the Index register in Data segment(16-bit, 64 KB) .Destination Index (DI) is a 16-bit register. DI is used for indexed, based indexed and register indirect addressing, as well as a destination data address in string manipulation instructions.
zero -Aval Preet Singh
zero -Aval Preet Singh
Indirect means not direct. We got there by indirect means. The author used indirect characterization.
Addersing mode of a microprocesso tells the programmer that in which mode the instruction works . There are 5 addressing mode in 8080 , viz. Direct , register, indirect , immidiate ,implict addressing modes.
the most indirect. This is the most indirect route ever to the airport