Hi everyone, i have met another problem that i am unable to solve for several days. The Falling Edge External Interrupt that i have set INT0 of the DS89C450 MCU is always triggering even when i do not trigger it by pressing the IR remote control.(And it shows 1000 characters of 'F' on the MTK.)
Basically my program is here: http://pastebin.com/atpb3EZy