Intel 210200-002 manual SET INTERRUPT· Enable Flag

STI

SET INTERRUPT· ENABLE FLAG

STI

Operation: Flags Affected:

(IF) -1IF

Description:

STi (Set Interrupt-enable flag) sets IF to 1, enabling processor recognition of maskable interrupt requests appearing on the INTR line. Note however, that a pending interrupt will not actually be recognized until the instruction following STI has executed. STI does not affect any other flags.

Encoding:

11111011

STI Operands Clocks Transfers Bytes STI Coding Example

(no operands) '2 - 1 STI

2-154