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1、bmEQU50H;百分秒miaoEQU51HfenEQU52HORG0000HLJMPBEGINORG0BHLJMPSJDLBEGIN:MOVR2,#9HMOVR1,#50HY1:MOV@R1,#00HINCR1DJNZR2,Y1;内存清零MOVTMOD,#01HMOVTH0,#0D8HMOVTL0,#0F0HSETBEA;初始化SETBET0CLRTR0MOVR2,#6X11:MOVA,#0FFHMOVSBUF,AJNBTI,$CLRTIDJNZR2,X11CLRP2.3NOPSETBP2.3;上电不显示L1:JBP0.0,$LCALLDELAYJBP0.0,L
2、1;判键JNBP0.0,$;判松开没LCALLXCZ;按了一次显初值SETBTR0;开定时中断PJ:JNBP0.0,YANLE;判断是否又按了LCALLXIANSHI;显示数JMPPJYANLE:LCALLDELAYJBP0.0,PJJNBP0.0,$CLRTR0;第二次按了，关定时器，读数LCALLXIANSHIHUI:JBP0.0,$LCALLDELAYJBP0.0,HUIJNBP0.0,$LJMPBEGIN;再次按了，复位XCZ:MOVR3,#4X1:MOVA,#0C0HMOVSBUF,AJNBTI,$CLRTIDJNZR3,X1CLRP2.3NOPSETB
3、P2.3RET;显初值函数SJDL:PUSHAMOVTH0,#0D8HMOVTL0,#0F0HINCBMMOVA,BMCJNEA,#100,FANHUIMOVbm,#00HINCMIAOMOVA,MIAOCJNEA,#60,FANHUIMOVMIAO,#00HINCFENMOVA,FENCJNEA,#20,FANHUIMOVFEN,#00HFANHUI:POPARETI;定时中断函数，处理数据xianshi:MOVA,bmadda,#0daamovbm,aMOVA,miaoadda,#0daamovmiao,aMOVA,fenadda,#0daamovbm,a;查
4、表寻值movR0,#30hMOVR4,#3MOVDPTR,#DATLL1:MOVa,@R0anla,#0f0hswapamovb,amova,@r0anla,#0fhMOVCA,@A+DPTRMOVSBUF,AJNBTI,$CLRTImova,bMOVCA,@A+DPTRMOVSBUF,AJNBTI,$CLRTIINCR0DJNZR4,LL1CLRP2.3NOPSETBP2.3;利用595显示RETDELAY:MOVR7,#10D1:MOVR6,#100DJNZR6,$DJNZR7,D1RET;延时DAT:;0--9DB0C0H0F9H0A4H0B0H99H92H
5、82H0F8H80H90HEND
