NEC PD75P402 Manuale Utente Pagina 185

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174
CHAPTER 9. INSTRUCTION SET
9.4.11 Interrupt Control Instructions
EI
Function: IME 1
Sets the interrupt master enable flag (1), and enables interrupts. Whether or not interrupts are accepted is
determined by each interrupt enable flag.
EI IEXXX
Function: IE××× 1; ××× = N2 to N0
Sets the interrupt enable flag (IE×××) (1), and enables the interrupt. (××× = BT, CSI, 0, 2)
DI
Function: IME 0
Resets the interrupt master enable flag and disables interrupts regardless of the contents of each interrupt
enable flag.
DI IEXXX
Function: IE××× 0; ××× = N2 to N0
Resets the interrupt enable flag (IE×××) (0), and disables the interrupt. (××× = BT, CSI, 0, 2)
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