try this ?!?: ?? load timer 0 count register?with 255 decimal ?? configure?timer 0 to increment with a falling(maybe rising)?edge on T0 pin ?? enable/use timer0 overflow interrupt ? you must reset count register to 255 decimal in your isr, ? and configure t0 pin as input in your startup code [Non-text portions of this message have been removed]
Message
pseudo-INT3 for atmega32 et al.
2009-10-05 by wg0z@aol.com