《單片機(jī)》讀程序題題庫答案

1、第1頁共57頁四、閱讀下列程序，注釋并填寫指令執(zhí)行后的結(jié)果（每題四、閱讀下列程序，注釋并填寫指令執(zhí)行后的結(jié)果（每題1010分）分）1、GG0LJMPLJMPSTARTSTART；跳轉(zhuǎn)到（；跳轉(zhuǎn)到（PCPC）＝）＝0030H0030H處GG30H30HSTARTSTART：MOVMOVR0#20HR0#20H；＃；＃20H20H－R0R0(R0)=20H(R0)=20HMOVMOVR1#30HR1#30H；#30H#30H－R1R1(R1

2、)=30H(R1)=30HMOVMOVAR0AR0；(R0)(R0)－AA(A)=20H(A)=20HADDADDA#36HA#36H；(A)#36H(A)#36H－AA(A)=56H(A)=56HMOVMOVP1AP1A；(A)(A)－P1P1(P1)=56H(P1)=56HINCINCR0R0；(R0)1(R0)1－R0R0(R0)=21H(R0)=21HINCINCR1R1；(R1)1(R1)1－R0R0(R1)=31H(R1)=

3、31HANLANLAR1AR1；(A)&(R1)(A)&(R1)－AA(A)=10H(A)=10HSWAPSWAPA；累加器累加器A的高低的高低4位交換位交換(A)=01H(A)=01HPUSHPUSHACCACC；累加器累加器A內(nèi)容壓棧內(nèi)容壓棧MOVMOVP1AP1A；(A)(A)－P1P1(P1)=01H(P1)=01HPOPPOPB；堆棧內(nèi)容出棧到堆棧內(nèi)容出棧到B寄存器寄存器(B)=01H(B)=01HMOVMOVR0AR0A；(

4、A)(A)－R0R0(R0)=01H(R0)=01HMOVMOVDPTRDPTR，＃，＃2200H2200H；#2200H#2200H－DPTRDPTR(DPTR)=2200H(DPTR)=2200HSETBSETBC；1－CyCy(Cy)=1(Cy)=1ADDCADDCAA＃0；(A)0(Cy)(A)0(Cy)－AA(A)=02H(A)=02HMOVXMOVX@DPTRA@DPTRA；(A)(A)－(DPTR)(DPTR)(2200H

5、)=02H(2200H)=02HENDEND(R0)=(R0)=01H01H(R1)=(R1)=31H31H(P1)=(P1)=01H01H(B)=(B)=01H01H(2200H)=(2200H)=02H02H2、GG0LJMPLJMPSTARTSTART；跳轉(zhuǎn)到跳轉(zhuǎn)到(PC)=0030H(PC)=0030H處GG30H30HSTARTSTART：MOVMOVSP#50HSP#50H；#50H#50H－SPSP(SP)=50H(SP)

6、=50H第3頁共57頁SWAPSWAPA；累加器累加器A高低高低4位交換位交換(A)=34H(A)=34HINCINCA；(A)1(A)1－AA(A)=35H(A)=35HMOVMOVDPTR#2000HDPTR#2000H；#2000H#2000H－DPTRDPTR(DPTR)=2000H(DPTR)=2000HINCINCDPHDPH；(DPH)1(DPH)1－DPHDPH(DPH)=21H(DPH)=21HMOVMOVP1AP1A

7、；(A)(A)－P1P1(P1)=35H(P1)=35HINCINCA；(A)1(A)1－AA(A)=36H(A)=36HMOVXMOVX@DPTRA@DPTRA；(A)(A)－(DPTR)(DPTR)(2100H)=36H(2100H)=36HXCHXCHAR0AR0；(A)(A)?R0R0(A)=30H(A)=30H(R0)=36H(R0)=36HRLRLA；累加器累加器A內(nèi)容循環(huán)左移內(nèi)容循環(huán)左移(A)=60H(A)=60HPUSH

8、PUSHACCACC；累加器累加器A的內(nèi)容入棧的內(nèi)容入棧RLRLA；累加器累加器A內(nèi)容循環(huán)左移內(nèi)容循環(huán)左移(A)=0C0H(A)=0C0HPOPPOPACCACC；堆棧內(nèi)容彈出到累加器堆棧內(nèi)容彈出到累加器A(A)=60H(A)=60HENDEND(A)=(A)=60H60H(R0)=(R0)=36H36H(DPTR)=(DPTR)=2100H2100H(P1)=(P1)=35H35H(30H)=(30H)=43H43H4、GG0LJMP

9、LJMPSTARTSTART；跳轉(zhuǎn)到跳轉(zhuǎn)到(PC)=0030H(PC)=0030H處GG30H30HSTARTSTART：MOVMOVSP#50HSP#50H；#50H#50H－SPSP(SP)=50H(SP)=50HMOVMOVDPTR#3000HDPTR#3000H；#3000H#3000H－DPTRDPTR(DPTR)=3000H(DPTR)=3000HMOVMOVR0#20HR0#20H；#20H#20H－R0R0(R0)=20

10、H(R0)=20HMOVMOVA#23HA#23H；#23H#23H－AA(A)=23H(A)=23HMOVMOVR2#0FHR2#0FH；#0FH#0FH－R2R2(R2)=0FH(R2)=0FHSETBSETB01H01H；置位置位20H.120H.1(20H.1)=1(20H.1)=1SETBSETBC；置位置位CyCy(Cy)=1(Cy)=1ADDCADDCA@R0A@R0；(A)((R0))Cy(A)((R0))Cy－AA(A

11、)=26H(A)=26HINCINCR0R0；(R0)1(R0)1－R0R0(R0)=21H(R0)=21HMOVMOV@R0A@R0A；(A)(A)－((R0))((R0))(21H)=26H(21H)=26HLOOPLOOP：DJNZDJNZR2R2LOOPLOOP；(R2)1(R2)1－R2R2若R2R2內(nèi)容不等于零則轉(zhuǎn)移內(nèi)容不等于零則轉(zhuǎn)移SWAPSWAPA；累加器累加器A內(nèi)容的高低內(nèi)容的高低4位交換位交換(A)=62H(A)=6