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IN

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Syntax: IN 8-bit Where  8-bit  is an output port address. Byte: 2byte Addressing Mode: Direct  Addressing Working:  1. 2.  Example: IN 35H Where [35H]= 20 H After execution of above [A] = 20H
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RRC

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  Syntax: RRC   Byte: 1byte   Addressing Mode: Implicit Addressing Working:  1. This is one byte instruction. 2. Microproccessor will allocate one byte for opcode RRC and operand is Accumulator i.e. operand will not need memory allocation during execution. 3. Thi s instruction rotates content of Accumulator one bit position towards Right.   i.e. The bit A0 is stored  in carry flag AS WELL AS  will get stored in A7 bit position.   4. C Flag will get affected. Example: RRC   where   [A]= 21H After execution of RRC [A] = 90H     A= 21 =  0010 0001 A7 ->  A6 -> A5 -> A4 -> A3 -> A2 -> A1 -> A0   -> Cy    |___<-____________________________<-_ __| 0         0         1        0       0        ...
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Register Indirect Addressing

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 EXAMPLES: CMP M ......... Register Indirect Addressing  MOV A, M MOV M, A ANA M ORA M XRA M SUB M  ADD M ADC M SBB M   LXI H 3000H  ; HL = 3000H MOV A,M       ; M = 10H ; M -> A INX H              ;  HL = 3001H CMP M             ; M = 11H,    IF [A] ? [M] ----- ----- [3000H] = 10 [3001H] = 11  
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