Fujitsu MB90895 Series Hardware Manual page 584

CHAPTER 17 Address Match Detecting Function
I Setting and Operating State
G
Initialization
2
• E PROM data are all cleared to "00
G
Occurrence of program error
• By using the connector (UART), information about the patch program is transmitted to the MCU
2
(F MC-16LX) from the outside according to the allocation of the E
• The MCU (F
G
Reset sequence
• After reset, the MCU (F
presence or absence of the correction program.
• If the byte count of the patch program is not "00
0 and 1 are read and set in the detection address setting registers 0 and 1 (PADR0 and PADR1).The
patch program (main body) is read according to the byte count of the patch program and written to
RAM in the MCU (F
• The patch program (main body) is allocated to the address where the patch program is executed in the
INT9 interrupt processing by the address match detection function.
• Address match detection is enabled (PACSR: AD0E = 1, AD1E = 1)
G
INT9 Interrupt processing
• Interrupt processing is performed by the INT9 instruction.MB90895 series has no interrupt request flag
by address match detection.Therefore, if the stack information in the program counter is discarded, the
detect address cannot be checked.When checking the detect address, check the value of program counter
stacked in the interrupt processing routine.
• The patch program is executed, branching to the normal program.
566
".
H
2
MC-16LX) stores the information received from outside in the E
2
MC-16LX) reads the byte count of the E
2
MC-16LX).
2
PROM patch program and data.
2
PROM patch program to check the
", the higher, middle and lower bits at detect addresses
H
2
PROM.