NEC PD754144 User Manual page 201

4-bit single-chip microcontrollers
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Examples
1. To use both INTT1 and INTT2 as having higher priority, and give priority to INTT2
DI
SKTCLR
BR
EI
RETI
VSUBBT: CLR1
EI
RETI
2. To use both INTT1 and INTT2 as having lower priority, and give priority to INTT2
SKTCLR
BR
RETI
VSUBBT: CLR1
RETI
CHAPTER 7 INTERRUPT AND TEST FUNCTIONS
IRQT2
VSUBBT
:
IRQT1
IRQT2
VSUBBT
IRQT1
User's Manual U10676EJ3V0UM
;
IRQT2=1?
Service routine of INTT2
Service routine of INTT1
;
IRQT2 =1?
Service routine of INTT2
Service routine of INTT1
201

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