匯編 延時 函數(shù)

各種匯編延時程序大集合延時時間=[(2*第一層循環(huán)+3)*第二層循環(huán)+3]*第三層循環(huán)+5--------------------------------------------------------------------------------;延時5秒左右DELAY5S:PUSH04HPUSH05HMOVR4,#50DELAY5S_0:MOVR5,#200DELAY5S_1:MOVR6,#245DJNZR6,$DJNZR5,DELAY5S_1DJNZR4,DELAY5S_0POP06HPOP05HPOP04HRET--------------------------------------------------------------------------------;513微秒延時程序DELAY:MOVR2,#0FEH--------------------------------------------------------------------------------;10毫秒延時程序DL10MS:MOVR3,#14HDL10MS1:LCALLDELAYDJNZR3,DL10MS1RET--------------------------------------------------------------------------------;0.1s延時程序12mhzDELAY:MOVR6,#250DL1:MOVR7,#200--------------------------------------------------------------------------------;延時1046549微秒(12mhz);具體的計算公式是:;((((r7*2+1)+2)*r6+1)+2)*r5+1+4=((r7*2+3)*r6+3)*r5+5--------------------------------------------------------------------------------Ret--------------------------------------------------------------------------------128*256*10=327680DJNZR7,K3;2指令周期2*128*256*10=655360DJNZR6,K2;2指令周期--------------------------------------------------------------------------------;這個算下來也只有0.998抄T_0:MOVR7,#10;D1:MOVR6,#200;D2:MOVR5,#248;DJNZR5,$----------------------------------------------------------------------------------------------------------------------------------------------------------------JMPDELAY10MSJMPDELAY10MSDELAY_10MS:MOVR3,#1--------------------------------------------------------------------------------DJNZR4,DELAY10MSADJNZR3,DELAY10MSRET--------------------------------------------------------------------------------;500500MSJMPDELAY_MSDELAY_175MS:;175MSMOVR2,#73/1.024=2390MOVR0,#244;1DELAY24001:MULAB;4DJNZR0,DELAY24001;2RET--------------------------------------------------------------------------------DELAY1:MOVR1,#00HDELAY2:MOVR2,#0B2HDJNZR2,$MOVR2,#10;延時1秒LCALLDELAYMOVR2,#50;延時5秒LCALLDELAYDELAY:延時子程序PUSHR2PUSHR1PUSHR0DELAY1:MOVR1,#00HDELAY2:MOVR0,#0B2HDJNZR0,$POPR1POPR2RET--------------------------------------------------------------------------------1:DEL:MOVR7,#2000.001ms+200*0.001ms+200*0.001ms+200*123*0.002ms+200*0.002ms--------------------------------------------------------------------------------2:DEL:MOVR7,#200--------------------------------------------------------------------------------NOPNOPDJNZR6,D52DJNZR7,D51POPPSWRET--------------------------------------------------------------------------------------------------------------------------------------------------