Data transfer instructions in 8085 microprocessor
Data tranfer instructions are the instructions which transfers data in the microprocessor. They are also called copy instructions.
Following is the table showing the list of logical instructions:
| OPCODE | OPERAND | EXPLANATION | EXAMPLE |
|---|---|---|---|
| MOV | Rd, Rs | Rd = Rs | MOV A, B |
| MOV | Rd, M | Rd = Mc | MOV A, 2050 |
| MOV | M, Rs | M = Rs | MOV 2050, A |
| MVI | Rd, 8-bit data | Rd = 8-bit data | MVI A, 50 |
| MVI | M, 8-bit data | M = 8-bit data | MVI 2050, 50 |
| LDA | 16-bit address | A = contents at address | LDA 2050 |
| STA | 16-bit address | contents at address = A | STA 2050 |
| LHLD | 16-bit address | directly loads at H & L registers | LHLD 2050 |
| SHLD | 16-bit address | directly stores from H & L registers | SHLD 2050 |
| LXI | r.p., 16-bit data | loads the specified register pair with data | LXI H, 3050 |
| LDAX | r.p. | indirectly loads at the accumulator A | LDAX H |
| STAX | 16-bit address | indirectly stores from the accumulator A | STAX 2050 |
| XCHG | none | exchanges H with D, and L with E | XCHG |
| PUSH | r.p. | pushes r.p. to the stack | PUSH H |
| POP | r.p. | pops the stack to r.p. | POP H |
| IN | 8-bit port address | inputs contents of the specified port to A | IN 15 |
| OUT | 8-bit port address | outputs contents of A to the specified port | OUT 15 |
In the table,
R stands for register
M stands for memory
r.p. stands for register pair
Attention reader! Don’t stop learning now. Get hold of all the important CS Theory concepts for SDE interviews with the CS Theory Course at a student-friendly price and become industry ready.
