qa.hlp (Table of Contents; Topic list)
STI
   Summary  Detail  Example  Key to Flags
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Set Interrupt Flag                               Flags:  O D I T S Z A P C
                                                         ═════════════════
Syntax:  STI                                                 1
 
  Sets the interrupt flag. When the interrupt flag is set, maskable inter-
  rupts are recognized. If interrupts were disabled by a previous CLI
  instruction, pending interrupts will not be executed immediately; they
  will be executed after the instruction following STI.
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