同T0方式3,产生200us和400us的定时,使P1.0和P1.1分别产生400us和800us的方波,晶振6MH。
ORG 0000H
LJMP MAIN
ORG 000BH
AJMP PIT0
ORG 001BH
AJMP PIT1
MAIN: MOV SP, #60H
MOV TMOD, #03H
MOV TL0, #9CH
MOV TH0, #38H
MOV TCOM, #50H ;TR0=1 TR1=1
MOV IE, #8AH
HERE: AJMP HERE
PIT0: MOV TL0, #9CH
CPL P1.0
RETI
PIT1: MOV TH0, #38H
CPL P1.1
RETI
END