
MB90420G/425G Series
60
16. Address Match Detect Function
If the address setting is the same as the address detection register, an INT9 instruction is executed. The integrated
address match detection function can be implemented by processing the INT9 interrupt service routine.
Two address registers are used, each with its own compare enable bit. When there is a match between the
address register and program counter, and the compare enable bit is set to “1” , the INT9 instruction is forcibly
executed by the CPU.
Block diagram
Address latch
Compare
Address detection
register
Enable bit
F2MC-16LX
CPU core
F2MC-16LX bus