8085 program to exchange content of HL register pair with DE register pair
In this program we will see how to exchange the content of DE and HL pair.
Problem Statement
Write 8085 Assembly language program to swap the content of HL and DE register pair.
Discussion
This process is very simple, 8085 has XCHG instruction. This instruction swaps DE and HL pair content. We are storing some values to DE and HL pair directly, and then exchange them using XCHG.
Input
DE = 5678H
HL = CDEFH
Flow Diagram
Program
Address
| HEX Codes
| Mnemonics
| Comments
|
|---|
F000
| 16, 56
| MVI D,56H
| Load D with56H
|
F002
| 1E, 78
| MVI E,78H
| Load D with78H
|
F004
| 26, CD
| MVI H,CDH
| Load D with CDH
|
F006
| 2E, EF
| MVI L,EFH
| Load D withEFH
|
F008
| EB
| XCHG
| Exchange the content of DE and HL
|
F009
| 76
| HLT
| Terminate the program
|
Output
DE = CDEFH
HL = 5678H
Published on 22-Jan-2019 11:06:52
