CHAPTER 22 INTERRUPT FUNCTIONS
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User’s Manual U12697EJ3V0UM
22.8.5 Macro service control registers
(1) Macro service control word
The
µ
PD784225’s macro service function is controlled by the macro service control mode register and macro
service channel pointer. The macro service processing mode is set by means of the macro service mode register,
and the macro service channel address is indicated by the macro service channel pointer.
The macro service mode register and macro service channel pointer are mapped onto the part of the internal
RAM shown in Figure 22-21 for each macro service as the macro service control word.
When macro service processing is performed, the macro service mode register and channel pointer values
corresponding to the interrupt requests for which macro service processing can be specified must be set
beforehand.