List p=16f84 include "p16f84.inc" Status equ 0x03 TrisA equ 0x85 TrisB equ 0x86 Porta equ 0x05 PortB equ 0x06 Start ORG 0x00 BSF 03,5 Go to page1 for setting-up the ports MOVLW 00h Put 00 into W

二倍频的陷波器的设计过程， 文档中有子函数，自由调用-BSF