Question: 3. a) Explain the following code and indicate in each case the type of addressing used i) MOV RI, #6Ah ii) MOV A, @R b)

3. a) Explain the following code and indicate in each case the type of addressing used i) MOV RI, #6Ah ii) MOV A, @R b) Give four 4 Marksl ) types of addressing modes of 8051 with an example in each type. 4 Marks] c) Treat R6-R7 and R4-R5 as two 16 bit registers. Perform subtraction between them. Store the result in 20h (lower byte) and 21h (higher byte) of 8051 Memory

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