NEC PD78P214 Manuale Utente

301

The 

µPD78214 has the following two interrupt handling modes.  Either mode can be selected by the program.

Interrupt handling by a macro service is limited to the interrupt request sources provided with a macro service
handling mode listed in Table 12-1.

Interrupt request handling mode

Processed by:

Vectored interrupt

Macro service

Processing

PC and PSW contents

Saved and restored

Retained

Program control branches to a

specified service program.

Predetermined processing,

such as data transfer between

memory and I/O, is performed.

Software

Hardware

(firmware)

Maskable vectored interrupts can easily be controlled by multiple-interrupt handling with two priority levels.