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CHAPTER 17 Address Match Detecting Function
I Flow of Patch Processing
Figure 17.4-5 shows the flow of patch processing using the address match detection function.
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Figure 17.4-5 Flow of Patch Processing
Reset
2
E
PROM: 00
H
read in
YES
2
E
PROM: 0000
H
=0
NO
Detect address read in
2
E
PROM: 0001
0003
to
H
H
↓
MCU: PADR0 Setting
Patch program read in
2
E
PROM: 0010
008F
to
H
H
↓
MCU: 000400
00047F
to
H
H
Enables the address
match detection
( PACSR: AD0E =1 )
Usual program
execution
NO
program address
=PADR0
0000
H
0001
H
0002
H
0003
H
0010
H
0090
H
FFFF
H
Patch program branching
Patch program execution
000400
Patch program end
YES
INT9
2
E
PROM
Patch program byte count :80
H
Detect address(Low)
:00
H
Detect address(Middle) :80
H
Detect address(High)
:FF
H
Patch program
INT9
JMP 000400
H
to 000480
H
H
JMP FF8050
H
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