1. ANA R
R ⇒ A, B, C, D, E, H, L, and M
Instruction word size ⇒ 1 Byte
Operation ⇒ When this instruction will execute the content of Register R will get AND operation with the accumulator (A) content bit by bit and the final result will store in the accumulator [A].
Addressing Mode ⇒
If R ≠ M ⇒ Register Addressing Mode
If R = M ⇒ Indirect Addressing Mode
For example:
[A] = 29 H [D] = 56 HANA D
[A] = 0 0 1 0 1 0 0 1 [D] = 0 1 0 1 0 1 1 0——————————–
0 0 0 0 0 0 0 0 = 00 H
[D] = 56 H [A] = 00 H2. ANI 8-bit data
Instruction word size ⇒ 2 Byte
Operation ⇒ When this instruction will execute the 8-bit data given in instruction will get AND operation with the accumulator (A) content bit by bit and the final result will store in the accumulator [A].
Addressing Mode ⇒ Immediate Addressing Mode
3. ORA R
R ⇒ A, B, C, D, E, H, L, and M
Instruction word size ⇒ 1 Byte
Operation ⇒ When this instruction will execute the content of Register R will get OR operation with the accumulator (A) content bit by bit and the final result will store in the accumulator [A].
Addressing Mode ⇒
If R ≠ M ⇒ Register Addressing Mode
If R = M ⇒ Indirect Addressing Mode
For example:
[A] = 29 H [D] = 56 HORA D
[A] = 0 0 1 0 1 0 0 1 [D] = 0 1 0 1 0 1 1 0——————————–
0 1 1 1 1 1 1 1 = 7F H
[D] = 56 H [A] = 7F H4. ORI 8-bit data
Instruction word size ⇒ 2 Byte
Operation ⇒ When this instruction will execute the 8-bit data given in instruction will get OR operation with the accumulator (A) content bit by bit and the final result will store in the accumulator [A].
Addressing Mode ⇒ Immediate Addressing Mode
5. XRA R
R ⇒ A, B, C, D, E, H, L, and M
Instruction word size ⇒ 1 Byte
Operation ⇒ When this instruction will execute the content of Register R will get Ex-OR operation with the accumulator (A) content bit by bit and the final result will store in the accumulator [A].
Addressing Mode ⇒
If R ≠ M ⇒ Register Addressing Mode
If R = M ⇒ Indirect Addressing Mode
For example:
[A] = 26 H [D] = D1 HXRA D
[A] = 0 0 1 0 0 1 1 0 [D] = 1 1 0 1 0 0 0 1——————————–
1 1 1 1 0 1 1 1 = F7 H
[D] = D1 H [A] = F7 H6. XRI 8-bit data
Instruction word size ⇒ 2 Byte
Operation ⇒ When this instruction will execute the 8-bit data given in instruction will get Ex-OR operation with the accumulator (A) content bit by bit and the final result will store in the accumulator [A].
Addressing Mode ⇒ Immediate Addressing Mode
7. CMA no operand
Instruction word size ⇒ 1 Byte
Operation ⇒ When this instruction will execute the content of accumulator (A) will get complement bit by bit and the final result will store in the accumulator [A].
Complement means 1 becomes 0 and 0 becomes 1.
Addressing Mode ⇒ Implicit Addressing Mode
For example:
[A] = 28 HCMA
[A] = 0 0 1 0 1 0 0 0——————————–
1 1 0 1 0 1 1 1 = D7 H
[A] = D7 H| Instruction | Sign flag | Zero flag | Auxiliary carry flag | Parity flag | Carry flag |
| ANA | ✔ | ✔ | 1 | ✔ | 0 |
| ANI | ✔ | ✔ | 1 | ✔ | 0 |
| ORA | ✔ | ✔ | 0 | ✔ | 0 |
| ORI | ✔ | ✔ | 0 | ✔ | 0 |
| XRA | ✔ | ✔ | 0 | ✔ | 0 |
| XRI | ✔ | ✔ | 0 | ✔ | 0 |
| CMA | ✖ | ✖ | ✖ | ✖ | ✖ |
✔ ⇒ affect according to the result
✖ ⇒ Not affect
1 ⇒ SET
0 ⇒ RESET
Note:
1. CMA instruction will not affect the status of any flag.
2. ANA, ANI, ORA, ORI, XRA, XRI instructions will always reset the carry flag.
3. ANA, ANI instructions always SET the auxiliary carry flag.
4. ORA, ORI, XRA, XRI instructions will always reset the auxiliary carry flag.
5. ANA, ANI, ORA, ORI, XRA, XRI instructions affect other flags as per result.
