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581
CHAPTER 21 ROM CORRECTION FUNCTION
Figure 21.5-3 Flowchart of Program Patch Processing
Reset
Read the 00
H
of E
2
PROM
0000
H
(E
2
PROM) = 0
Read the address
0001
H
to 0003
H
(E
2
PROM)
MOV
PADR0 (MCU)
Read the patch program
0010
H
to 0090
H
(E
2
PROM)
MOV
000400
H
to 000480
H
(MCU)
Enable compare
MOV PACSR, #02H
To patch program
JMP 000400H
Patch program execution
000400
H
to 000480
H
End of patch program
JMP FF0050H
INT9
INT9
Normal program execution
PC = PADR0
NO
YES
Patch program
Size of patch
Upper program address: 00
Middle program address: 00
Lower program address: 00
E
2
PROM
FFFF
H
0090
H
0010
H
0003
H
0002
H
0001
H
0000
H
program in byte: 80
I/O area
RAM / Register area
RAM area
Stack area
FFFFFF
H
FF0050
H
FF0000
H
FE0000
H
001100
H
000480
H
000400
H
000100
H
000000
H
ROM
RAM
Abnormal program
Patch program
MB90462/467
Clear interrupt program
YES
NO
Summary of Contents for MB90460 Series
Page 1: ...The following document contains information on Cypress products ...
Page 3: ......
Page 5: ......
Page 9: ...iv ...
Page 41: ...22 CHAPTER 1 OVERVIEW ...
Page 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Page 83: ...64 CHAPTER 3 CPU ...
Page 95: ...76 CHAPTER 4 RESET ...
Page 107: ...88 CHAPTER 5 CLOCK ...
Page 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 175: ...156 CHAPTER 7 INTERRUPT ...
Page 181: ...162 CHAPTER 8 MODE SETTING ...
Page 223: ...204 CHAPTER 9 I O PORT ...
Page 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Page 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Page 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Page 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Page 485: ...466 CHAPTER 16 PWC Timer ...
Page 531: ...512 CHAPTER 17 UART ...
Page 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Page 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Page 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Page 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Page 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Page 715: ...696 APPENDIX ...
Page 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 739: ......