| CJNE - Compare and Jump if Not Equal |
Description: The CJNE instruction compares the values of two operands, and jumps to relative address associated with the instruction. If the value of two operands are equal, the program execution continues to the next line of program. |
| Syntax: CJNE Source, Destination, Rel_Addr |
| Example: Source: Accumulator or any register Destination: Immediate value, direct value or any register CJNE A, R0, LABEL CJNE A, 60h, LABEL CHNE R0, #12H, LABEL |
| CLR - Clear Register |
Description: The CLR instruction clears the value of associated operand(a bit operand or a register) i.e sets to zero. |
| Syntax: CLR Register |
| Example: CLR A CLR C |
| CPL - Complement Register |
Description: The CPL instruction complements the value of associated operand. If a bit operand is provided, the bit get toggled, if a register(Accumulator) is provided all the bits get reversed. |
| Syntax: CPL Operand |
| Example: CPL A CPL C CPL bit_addr |
| DA - Decimal Adjust |
Description: The DA instruction used to convert the value stored in accumulator to the binary coded decimal(BCD) format. |
| Syntax: DA Accumulator |
| Example: DA A |
| DEC - Decrement Register |
Description: The DEC instruction decrements the value of associated operands by 1. If the value of operands is zero, then the operand value is reset to FF(255) and then decremented further. |
| Syntax: DEC Operand |
| Example: DEC A DEC Rn DEC @RAM |
| DIV - Divide Accumulator by B |
Description: The DIV instruction divides the unsigned value in Accumulator by the unsigned value of Register B. |
| Syntax: DIV Accumulator, B |
| Example: DIV A, B |
| DJNZ - Decrement Register and Jump if Not Zero |
Description: The DJNZ instruction decrements the value of associated operands by 1. If the value of operands is not equal to zero, then jumps to the address indicated by the second operand. |
| Syntax: DJNZ Operand1, operand2 |
| Example: LABEL Some code...... Some code...... Some code...... DLNZ R0, LABEL |
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