Q. Write an assembly language program to exchange the content of memory locations 5000H and 8000H with a labeled Address and opcode. Also stepwise show the result.
Program:
|
Address
|
Mnemonics
|
Operand
|
Hex
Code
|
Remarks
|
|
2000H
|
LXI H,
|
5000H
|
Hex code of LXI H
|
|
|
2001H
|
|
|
00
|
HL=5000H
|
|
2002H
|
|
|
50
|
M=[HL]=[5000H]
|
|
2003H
|
LXI D,
|
8000H
|
Hex code of LXI D
|
|
|
2004H
|
|
|
00
|
|
|
2005H
|
|
|
80
|
DL=8000H
|
|
2006H
|
LDAX D
|
|
Hex code of LDAX D
|
A=[DL]=[8000H]
|
|
2007H
|
MOV B,A
|
|
Hex code of MOV B,A
|
B=A
|
|
2008H
|
MOV A,M
|
|
Hex code of MOV A,M
|
A=M
|
|
2009H
|
STAX D
|
|
Hex code of STAX D
|
[8000H]=M
|
|
200AH
|
MOV M,B
|
|
Hex code of MOV M,B
|
M=[8000H]
|
|
200BH
|
HLT
|
|
76
|
Stop
|
mnemonics=opcode here!!
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