m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 392
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m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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17.3.2 Operations in address matching detection mode
When an address matching detection interrupt request has been accepted, the interrupt disable flag (I) is
set to “1”; the processor interrupt priority level (IPL) does not change.
Figures 17.3.2 and 17.3.3 show the examples of the ROM correct processing using the address matching
detection mode.
Setting the detect enable bit to “1” initiate to compare the contents of PG and PC with one of the con-
The contents of PG, PC, and PS at acceptance of the address matching detection interrupt request are
tents of the following registers. This comparison is performed at each op-code fetch:
• When the address matching detection 0 is selected, the contents of the address compare register 0
• When the address matching detection 1 is selected, the contents of the address compare register 1
• When the address matching detection 2 is selected, the contents of the address compare register 0
When the address which matches with the above register’s contents is detected, an address matching
detection interrupt request occurs, and then, this request will be accepted.
Perform the necessary processing with an address matching detection interrupt routine.
saved onto the stack area. Therefore, be sure to rewrite the above contents of PG and PC to a certain
return address, and return to the address by using the RTI instruction.
are used for the above comparison.
are used for the above comparison.
or 1 are used for the above comparison.
7905 Group User’s Manual Rev.1.0
17.3 Address matching detection mode
DEBUG FUNCTION
17-7
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