Saturday, September 12, 2009

Store 8-bit data in memory.(8085)

Program 1:
MVI A, 52H : Store 32H in the accumulator
STA 4000H : Copy accumulator contents at address 4000H
HLT : Terminate program execution
Program 2:
LXI H : Load HL with 4000H
MVI M : Store 32H in memory location pointed by HL register pair (4000H)
HLT : Terminate program execution

The result of both programs will be the same. In program 1 direct addressing instruction is used, whereas in program 2 indirect addressing instruction is used.

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