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In the 8086 microprocessor, the DX register has several special uses. It is often paired with the AX register for multiplication and division operations, where DX holds the high-order bits of the result in multiplication and the remainder in division. Additionally, DX is used in I/O operations, particularly for port addresses in conjunction with the IN and OUT instructions. It also serves as a pointer for data in certain string manipulation instructions.
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What are the multipurpose registers in 8086 microprocessor?
8086 has four multipurpose registers. 1. AX (Accumulator Register) 2. BX (Base Register) 3. CX (Count Register) 4. DX (Data Register) By Aneeta Arshad
What is the size of flag register?
All of the 8086/8088 registers, AX, BX, CX, DX, SP, BP, SI, DI, CS, DS, SS, ES, IP, and FLAGS, are 16 bit registers. The AX, BX, CX, and DX registers may also be viewed as 8 eight bit registers AH/AL, BH/BL, CH/CL, and DH/DL.
What are the Functions of DX register?
used as implicit operand
Which instructions are used for load 16 bit data to register pair?
To load 16-bit data into a register pair in assembly language for microprocessors like the Intel 8086, the MOV instruction is commonly used. For example, you can use MOV AX, [address] to load a 16-bit value from a memory address into the AX register, or MOV DX, AX to transfer data from AX to DX if needed. Additionally, you can use PUSH and POP instructions for stack operations involving 16-bit data.
What does PE mean on the 435 dx cash register?
printer error
Draw the register organisation of 8086 and explain typical application of each register?
In the 8086/8088 microprocessor, there are eight 8 bit general registers, AH, AL, BH, BL, CH, CL, and DH, DL. They can be used as four 16 bit registers AX, BX, CX, and DX. There are four 16 bit pointer/index registers, SP (stack pointer), BP (base pointer), SI (source index), and DI (destination index). There are four 16 bit segment registers, CS (code segment), DS (data segment), SS (stack segment), and ES (extra segment). There is the 16 bit instruction pointer, IP, and there is a 16 bit flags register.
What is the difference between General Purpose Registers and Special Purpose Registers?
general purpose registers are basically used to hold temporarily data and intermediately result. example: ax,bx,cx,dx each of 16 bits. whereas special purpose register are primely used for memory access. it is of two types : 1. segment register and 2. index register/ pointer
A Explain the use of Code Segment CS and data segment DS register in 8086 microprocessor?
Code segment (CS) is a 16-bit register containing address of 64 KB segment with processor instructions. The processor uses CS segment for all accesses to instructions referenced by instruction pointer (IP) register. CS register cannot be changed directly. The CS register is automatically updated during far jump, far call and far return instructions. Data segment (DS) is a 16-bit register containing address of 64KB segment with program data. By default, the processor assumes that all data referenced by general registers (AX, BX, CX, DX) and index register (SI, DI) is located in the data segment. DS register can be changed directly using POP and LDS instructions. Code segment (CS) is a 16-bit register containing address of 64 KB segment with processor instructions. The processor uses CS segment for all accesses to instructions referenced by instruction pointer (IP) register. CS register cannot be changed directly. The CS register is automatically updated during far jump, far call and far return instructions. Data segment (DS) is a 16-bit register containing address of 64KB segment with program data. By default, the processor assumes that all data referenced by general registers (AX, BX, CX, DX) and index register (SI, DI) is located in the data segment. DS register can be changed directly using POP and LDS instructions.
What does DX mean in the Honda accord name?
It is just a model designation indicating the level of standard equipment. Honda uses DX, LX, & EX. DX is the base car and the cheapest.
How many general purpose registers in 80386?
There exists 4 general purpose registers in 8086 namely Ax(Accumulator),Bx(Base), Cx(Count), Dx(Data).Further these 4 registers are divided into 8 based on higher and lower bits i.e.,. AX- AH &AL, BX-BH & BL, CX- CH & CL, DX- DH& DL. In 8086, there are 4 segment registers: 1. Stack segment 2. Code segment 3. Data segment 4. Extra segment
What are the 4 general purposes registers?
Cash register School Register -------------------- processor register User-accessible Registers Data registers Address registers Conditional registers General purpose registers Floating point registers Constant registers Special purpose registers Instruction registers Model-specific registers Control and status registers Memory buffer register Memory data register Memory address register Memory Type Range Registers Hardware registers
Difference between 8086 and 80386?
There are several differences between the 8086 and the 80386. Two notable differences: 1.) the 8086 is a 16 bit computer, while the 80386 is a 32 bit computer, and 2.) the 8086 does not support virtual addressing while the 80386 does.8086 is 8 bit processor and 80386 is 16 bit processor
