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MB90483CPF Datasheet(PDF) 82 Page - Fujitsu Component Limited. |
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MB90483CPF Datasheet(HTML) 82 Page - Fujitsu Component Limited. |
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82 / 120 page  MB90480/485 Series 82 23. Address Match Detection Function When the address is equal to a value set in the address detection register, the instruction code loaded into the CPU is replaced forcibly with the INT9 instruction code (01H). As a result, when the CPU executes a set instruction, the INT9 instruction is executed. Processing by the INT#9 interrupt routine allows the program patching function to be implemented. Two address detection registers are supported. An interrupt enable bit is prepared for each register. If the value set in the address detection register matches an address and if the interrupt enable bit is set at “1”, the instruction code loaded into the CPU is replaced forcibly with the INT9 instruction code. (1) Register List • Program address detection register 0 (PADR0) 76 54 3 2 10 Initial value XXXXXXXX B R/W : Readable and writable X : Undefined RESV : Reserved bit Address PADR0 (Low order address) : 001FF0H R/W R/W R/W R/W R/W R/W R/W R/W 76 54 3 2 10 Initial value XXXXXXXX B Address PADR0 (Middle order address) : 001FF1H R/W R/W R/W R/W R/W R/W R/W R/W 76 54 3 2 10 Initial value XXXXXXXX B Address PADR0 (High order address) : 001FF2H R/W R/W R/W R/W R/W R/W R/W R/W 76 54 3 2 10 Initial value XXXXXXXX B Address PADR1 (Low order address) : 001FF3H R/W R/W R/W R/W R/W R/W R/W R/W 76 54 3 2 10 Initial value XXXXXXXX B Address PADR1 (Middle order address) : 001FF4H R/W R/W R/W R/W R/W R/W R/W R/W 76 54 3 2 10 Initial value XXXXXXXX B Address PADR1 (High order address) : 001FF5H R/W R/W R/W R/W R/W R/W R/W R/W 76 54 3 2 10 Initial value 00000000 B Address 00009EH R/W R/W R/W R/W R/W R/W R/W R/W • Program address detection register 1 (PADR1) • Program address detection control status register (PACSR) RESV RESV RESV RESV AD1E RESV AD0E RESV |
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