The contents of either the register pair or the memory location are not altered. LXI Load register pair immediate : - The instruction loads bit data in the register pair designated in the operand. STA: - the content of accumulator are copied into the memory location. Eg: - STA H the content of accumulator is stored into the memory location h 8. STAX Store accumulator indirect : - The contents of the accumulator are copied into the memory location specified by the contents of the operand register pair.
The contents of the accumulator are not altered. SHLD store H and L register direct : - The contents of register L are stored into the memory location specified by the bit address in the operand and the contents of H register are stored into the next memory location by incrementing the operand.
The contents of registers HL are not altered. This is a 3-byte instruction, the second byte specifies the low-order address and the third byte specifies the high-order address. No both arent the same. If address is H and data at H is 20 and at H is If no1 and no2 are 8 bit the how to cpy no1 to no2 and if they are 16 bit. Lxi B initialises the pointer at the specified memory location of register By. Also,we generally prefer initialising registers at the start so LXI d should be at the start of the program ,then you should load data into memory m and then use the instruction mov r,m to move data in memory location to register r.
Don't get confused. Both will move the data. Mov a b means moving the value of b to a and mov b a means moving the value of a to b. Eg: - LDA H content of memory location h is coppied in accumulator. Eg: - STA H the content of accumulator is stored into the memory location h. Share This. Sarath chandra 13 May at Manjunath 4 May at Unknown 7 March at Unknown 3 May at Sheel Patel 16 March at Unknown 4 April at Darshan 3 June at Unknown 2 December at Suppose you want to add 11 and This actually depends on the processor you are referencing; some processors update their IP Instruction Pointer before performing a command, and some perform it after the command.
To find out if your processor is doing so before or after the command, use the instruction "mov ax,ip" in a debugger, and observe the value of ax. If ax contains the address of the mov instruction, it performs the update of IP after processing a command, while if it contains the address after the mov instruction, it performs the update before processing the command.
An indirect address is an address contained in a register or memory location, instead of in the instruction itself. AL instead of A Indirect addressing mode means the operand address is contained in a register. Lxi b, h lhld h xchg lhld h dcx d l lda h add l mov l, a lda h adc h mov h, a jnc l l inx b dcx d mov a, d ora e jnz l shld h mov l, c mov h, b shld h hlt. Lxi h, h mov a,m mov b,a inx h mov a,m add b sta h hlt.
Log in. Intel The Difference Between. Study now. See Answer. Best Answer. Study guides. What are the parts of a computer 4 cards. What is a CPU. What is a GPU. What is RAM. What is storage. Q: What is the difference between mvi instruction and mov instruction in ? Write your answer Related questions. How data transfer operation is done in micro processor?
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