NEC 78K/0 Series - Manual (Page 119)

CHAPTER 5 EXPLANATION OF INSTRUCTIONS
119 User's Manual U12326EJ4V0UM
Enable Interrupt
EI
Interrupt Enabled
[Instruction format] EI
[Operation] IE ← 1
[Operand]
None
[Flag]
Z AC CY
[Description]
• The maskable interrupt acknowledgeable status is set (by setting the interrupt enable flag (IE) to (1)).
• No interrupts are acknowledged between this instruction and the next instruction.
• If this instruction is executed, vectored interrupt acknowledgment from another source can be disabled. For
details, refer to “Interrupt Functions” in the user’s manual of each product.