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Operation of Address Match Detection Function at Storing Patch Program in E
Figure 21.4-4 shows the operation of the address match detection function at storing the patch
program in E
RAM
ROM
(1) Execution for detection address setting of reset sequence and normal program
(2) Branch to patch program which expanded in RAM with INT9 interrupt processing by address match detection
(3) Patch program execution by branching of INT9 processing
(4) Execution of normal program which branches from patch program
CHAPTER 21 ADDRESS MATCH DETECTION FUNCTION
2
PROM.
Figure 21.4-4 Operation of Address Match Detection Function at
Storing Patch Program in E
000000
H
(3)
Patch program
program address detection register
(1)
(2)
Program error
(4)
FFFFFF
H
2
PROM
E
. Patch program byte count
. Address for address detection
2
Serial E
PROM
. Patch program
interface
2
PROM
2
PROM
469
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