Q. Write an 8085 program and draw a flowchart to add two 16-bit numbers along with considering the carry.(8085 Microprocessor Program)
Flowchart/Algorithm
Program
| Address | Mnemonics | Operand | Opcode | Comments |
| 2000 | LHLD | 300H | 2A | Load H-L pair with address 3000H. |
| 2001 | 00 | |||
| 2002 | 30 | |||
| 2003 | XCHG | EB | Exchange H-L pair with D-E pair | |
| 2004 | LHLD | 3002H | 2A | Load H-L pair with data from 3002 H |
| 2005 | 02 | |||
| 2006 | 30 | |||
| 2007 | MVI | C, 00H | 0E | Move 0 to REG. C |
| 2008 | 00 | |||
| 2009 | DAD | D | 19 | Add D-E pair with H-L pair |
| 200A | JNC | 200EH | D2 | Jump to location 200E H if no carry |
| 200B | 0E | |||
| 200C | 20 | |||
| 200D | INR | C | 0C | Increment C |
| 200E | SHLD | 3004H | 22 | Store the result at location 3004 H |
| 200F | 04 | |||
| 2010 | 30 | |||
| 2011 | MOV | A, C | 79 | Move carry from C to A |
| 2012 | STA | 3006H | 32 | Store the carry at location 3006 H |
| 2013 | 06 | |||
| 2014 | 30 | |||
| 2015 | HLT | 76 | HALT |
Output
Before Execution:
3000H: 16H
3001H: 5AH
3002H: 9AH
3003H: 7CH
After Execution:
3004H: B0H
3005H: 76H
3006H: 01H
Program Explanation
