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Process control instructions in 8086 microprocessor
These instructions are used to control the processor action by setting/resetting the flag values.
These are the process/processor control instructions.
Opcode | Operand | Description |
---|---|---|
STC | ---- | Used to set carry flag CY to 1 |
CLC | ---- | Used to clear/reset carry flag CY to 0 |
CMC | ---- | Used to put complement at the state of carry flag CY. |
STD | ---- | Used to set the direction flag DF to 1 |
CLD | ---- | Used to clear/reset the direction flag DF to 0 |
STI | ---- | Used to set the interrupt enable flag to 1, i.e., enable INTR input. |
CLI | ---- | Used to clear the interrupt enable flag to 0, i.e., disable INTR input. |
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