HELLO rICHARD,

Thk for ur reply,
the code displayed there is for timer, interrupt, and digital conversion.
that run well for several years.
your code is also not run at all on my breadboard.
the ANSELH is not used in my code due to the fact the PBADEN_OFF_3H is off.
about the version of the pbp, it is not relevant to the fail i think so.
1 think i pay attention to is the effect of charge accumulated on the breadboard (run @64mhz). but the pcb no charge on it..
i replayed another small breadboard , but the situation has not been better.