zheng xuguang

memory map with 9s12dp256 !

Discussion created by zheng xuguang on Jan 13, 2009
Latest reply on Jan 14, 2009 by Daniel Lundin
Hello !
    i am using mc9s12dp256 microcontroller. my question is: ram space is mapped at address 0xd000 ~ 0xffff, but interrupt vector located at 0xff80 ~ 0xffff, so ram space overlap the interrupt vector. s12FTS256KV2.pdf documents states that " By placing $3F or $3E in the PPAGE register, the bottom respectively top “fixed” 16Kbyte pages can be seen twice in the MCU memory map", does that mean if  ram space overlap the interrupt vector, it can also be accessed by place PPAGE register $3F?
           thanks !