SETB C ？？

cqw4101206 2003-08-22 07:59:01

我是一初学者，请问SETB C 和CLR　C　是什么意思？
用在什么方面？

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紫郢剑侠 2003-08-23

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这是哪种汇编?

从字面理解就是楼上的兄弟所说的意思.

itisajoke 2003-08-23

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SETB C 将C状态位置一
CLR C 清除C状态位，即将它置0

org 0000h clr p2.1 ajmp z0 du: acall q1 mov a,#0a0h add a,r5 acall so80 mov a,r3 acall so80 acall q1 mov a,#0a1h add a,r5 acall so80 acall do80 acall stop1 mov b,a acall yan ret xie: acall q2 mov a,#0a0h add a,r5 acall xe80 mov a,r3 acall xe80 mov a,b acall xe80 acall stop2 acall yan ret so80: mov r4,#08h clr p1.1 loop0:clr p1.1 rlc a mov p1.0,c setb p1.1 djnz r4,loop0 clr p1.1 nop nop setb p1.1 nop nop setb p1.0 clr p1.1 nop nop ret do80: mov r4,#08h loop1:setb p1.1 nop nop mov c,p1.0 rlc a clr p1.1 nop nop djnz r4,loop1 nop ret q1: setb p1.0 setb p1.1 nop nop clr p1.0 nop nop clr p1.1 ret stop1: clr p1.0 nop nop setb p1.1 nop nop setb p1.0 nop nop ret q2: setb p1.2 setb p1.3 nop nop clr p1.2 nop nop clr p1.3 ret stop2: clr p1.2 nop nop setb p1.3 nop nop setb p1.2 nop nop ret xe80: mov r4,#08h clr p1.3 loop3:clr p1.3 rlc a mov p1.2,c setb p1.3 djnz r4,loop3 clr p1.3 nop nop setb p1.3 nop nop setb p1.2 clr p1.3 nop nop ret yan: mov r2,#50h mov r0,#05h l1:mov r1,#05h l2:djnz r1,l2 djnz r2,l1 ret z0: mov r3,#00h mov r5,#00h mov r6,#00h mov r7,#08h zu: acall du acall xie inc r3 cjne r3,#0100h,zu cpl p2.0 inc r6 inc r6 mov a,r6 mov r5,a djnz r7,zu mm: setb p2.1 clr p2.0 ajmp mm end

www.dslcd.com www.dslcd.com COM EQU 20H;ZHI LIN JI CONG QI DAT EQU 21H;SHU JU JI CONG QI CS2 EQU P3.3; CS1 EQU P3.2;www.dslcd.com SID EQU P3.1;SHU JU XIAN SCLK EQU P3.0;SHI ZHONG XIANG ORG 0000H;www.dslcd.com AJMP MAIN; ORG 0013H; AJMP INSER;www.dslcd.com ORG 0030H; MAIN:MOV SP,#60H; CLR IT1; SETB PX1; SETB EX1; SETB EA; LCALL INT; LCALL CG_WRITE1; MOV DPTR,#TABDY3; ACALL YS;www.dslcd.com LCALL DEL; MOV DPTR,#TABDY0;www.dslcd.com ACALL YS; LCALL DEL;www.dslcd.com MOV DPTR,#TABDY1; ACALL YS; LCALL DEL; MOV DPTR,#TABDY2; ACALL YS;www.dslcd.com LCALL DEL; MOV DPTR,#TABDY4; ACALL YS; LCALL DEL; MOV DPTR,#TABDY5; ACALL YS; LCALL DEL; LCALL CG_WRITE; MOV DPTR,#TABDY2; ACALL YS; LCALL DEL; MOV DPTR,#TABDY3; ACALL YS; LCALL DEL; MOV DPTR,#TABDY4; ACALL YS; LCALL DEL; MOV DPTR,#TABDY5; ACALL YS; LCALL DEL;www.dslcd.com AJMP MAIN; PR1:PUSH ACC; MOV A,COM; SETB CS1;xie ru zwww.dslcd.comhi ling SETB CS2; SETB SID; CLR SCLK; SETB SCLK;1 CLR SCLK; SETB SCLK;2 CLR SCLK; SETB SCLK;3 CLR SCLK; SETB SCLK;4www.dslcd.com CLR SCLK; SETB SCLK;5 CLR SCLK; CLR SID; SETB SCLK;1 CLR SCLK; SETB SCLK;2 CLR SCLK; SETB SCLK;3 CLR SCLK; MOV C,ACC.7; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.6; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.5; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.4; MOV SID,C; SETB SCLK; CLR SCLK; CLR SID; SETB SCLK;1 CLR SCLK; SETB SCLK;2 CLR SCLK; SETB SCLK;3 CLR SCLK; SETB SCLK;4 CLR SCLK; MOV C,ACC.3; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.2; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.1; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.0; MOV SID,C;www.dslcd.com SETB SCLK; CLR SCLK; CLR SID; SETB SCLK;1 CLR SCLK; SETB SCLK;2 CLR SCLK; SETB SCLK;3 CLR SCLK; SETB SCLK;4 CLR SCLK; CLR CS1; CLR CS2; ACALL DLY8; POP ACC; RET; PR2:PUSH ACC;XIE RU SHU JU MOV A,DAT;www.dslcd.com SETB CS1; SETB CS2; SETB SID; CLR SCLK; SETB SCLK;1 CLR SCLK; SETB SCLK;2 CLR SCLK; SETB SCLK;3 CLR SCLK; SETB SCLK;4 CLR SCLK; SETB SCLK;5 CLR SCLK; CLR SID; SETB SCLK;1 CLR SCLK; SETB SID;www.dslcd.comwww.dslcd.com SETB SCLK;2 CLR SCLK; CLR SID; SETB SCLK;3 CLR SCLK; MOV C,ACC.7; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.6;www.dslcd.com MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.5; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.4; MOV SID,C; SETB SCLK; CLR SCLK; CLR SID; SETB SCLK;1 CLR SCLK; SETB SCLK;2 CLR SCLK; SETB SCLK;3 CLR SCLK; SETB SCLK;4 CLR SCLK; MOV C,ACC.3; MOV SID,C; SETB SCLK; CLR SCLK;www.dslcd.comwww.dslcd.com MOV C,ACC.2; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.1; MOV SID,C; SETB SCLK; CLR SCLK; MOV C,ACC.0; MOV SID,C;www.dslcd.com SETB SCLK; CLR SCLK; CLR SID; SETB SCLK;1 CLR SCLK; SETB SCLK;2 CLR SCLK; SETB SCLK;3 CLR SCLK; SETB SCLK;4 CLR SCLK; CLR CS1; CLR CS2; ACALL DELAY; POP ACC; RET; INSER:ACALL DELAY;ZHONG DUAN JNB P3.3,$;www.dslcd.com ACALL DELAY; JB P3.3,$; ACALL DELAY; JNB P3.3,$; ACALL DELAY; JNB P3.3,$; RETI; YS:MOV COM,#80H; LCALL PR1; MOV R2,#32; MOV R3,#00H; LOOP1:MOV A,R3; MOVC A,@A+DPTR; MOV DAT,A; LCALL PR2; INC R3; DJNZ R2,LOOP1; MOV COM,#90H; LCALL PR1; MOV R2,#32; LOOP2:MOV A,R3; MOVC A,@A+DPTR; MOV DAT,A; LCALL PR2;www.dslcd.com INC R3; DJNZ R2,LOOP2; RET; INT:MOV COM,#38H; LCALL PR1; MOV COM,#01H; LCALL PR1; MOV COM,#06H; LCALL PR1; MOV COM,#0FH; LCALL PR1; RET; CG_WRITE:MOV COM,#40H; LCALL PR1; MOV R2,#128; MOV R3,#00H; MOV DPTR,#CGTAB1; CG1:MOV A,R3; MOVC A,@A+DPTR; MOV DAT,A; LCALL PR2; INC R3; DJNZ R2,CG1; RET; CG_WRITE1:MOV COM,#40H; LCALL PR1; MOV R2,#128; MOV R3,#00H; MOV DPTR,#CGTAB; CG2:MOV A,R3; MOVC A,@A+DPTR; MOV DAT,A; LCALL PR2; INC R3; DJNZ R2,CG2; RET; CGTAB:DB 00H,00H,00H,00H,00H,00H,00H,00H;0 DB 00H,00H,00H,00H,00H,00H,00H,00H; DB 00H,00H,00H,00H,00H,00H,00H,00H; DB 00H,00H,00H,00H,00H,00H,00H,00H; DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH;1 DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH; DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH; DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH; DB 0AAH,0AAH,055H,055H,0AAH,0AAH,055H,055H;2 DB 0AAH,0AAH,055H,055H,0AAH,0AAH,055H,055H; DB 0AAH,0AAH,055H,055H,0AAH,0AAH,055H,055H; DB 0AAH,0AAH,055H,055H,0AAH,0AAH,055H,055H; DB 055H,055H,0AAH,0AAH,055H,055H,0AAH,0AAH;3 DB 055H,055H,0AAH,0AAH,055H,055H,0AAH,0AAH; DB 055H,055H,0AAH,0AAH,055H,055H,0AAH,0AAH; DB 055H,055H,0AAH,0AAH,055H,055H,0AAH,0AAH; CGTAB1:DB 055H,055H,055H,055H,055H,055H,055H,055H;0 DB 055H,055H,055H,055H,055H,055H,055H,055H; DB 055H,055H,055H,055H,055H,055H,055H,055H; DB 055H,055H,055H,055H,055H,055H,055H,055H; DB 0AAH,0AAH,0AAH,0AAH,0AAH,0AAH,0AAH,0AAH;1 DB 0AAH,0AAH,0AAH,0AAH,0AAH,0AAH,0AAH,0AAH; DB 0AAH,0AAH,0AAH,0AAH,0AAH,0AAH,0AAH,0AAH; DB 0AAH,0AAH,0AAH,0AAH,0AAH,0AAH,0AAH,0AAH; DB 0FFH,0FFH,000H,000H,0FFH,0FFH,000H,000H;2 DB 0FFH,0FFH,000H,000H,0FFH,0FFH,000H,000H; DB 0FFH,0FFH,000H,000H,0FFH,0FFH,000H,000H; DB 0FFH,0FFH,000H,000H,0FFH,0FFH,000H,000H; DB 000H,000H,0FFH,0FFH,000H,000H,0FFH,0FFH;3 DB 000H,000H,0FFH,0FFH,000H,000H,0FFH,0FFH; DB 000H,000H,0FFH,0FFH,000H,000H,0FFH,0FFH; DB 000H,000H,0FFH,0FFH,000H,000H,0FFH,0FFH; TABDY0:DB 0BBH,0B6H,0D3H,0ADH,0BBH,0DDH,0B9H,0CBH,0D4H,0A3H,0CCH,0EFH,0B5H,0E7H,0D7H,0D3H,0B9H,0ABH,0CBH,0BEH; DB 0BBH,0B6H,0D3H,0ADH,0BBH,0DDH,0B9H,0CBH,0D4H,0A3H,0CCH,0EFH; DB 0BBH,0B6H,0D3H,0ADH,0BBH,0DDH,0B9H,0CBH,0D4H,0A3H,0CCH,0EFH,0B5H,0E7H,0D7H,0D3H,0B9H,0ABH,0CBH,0BEH; DB 0BBH,0B6H,0D3H,0ADH,0BBH,0DDH,0B9H,0CBH,0D4H,0A3H,0CCH,0EFH; TABDY1:DB 21H,22H,23H,24H,25H,26H,27H,28H,29H,2AH,2BH,2CH,2DH,2EH,2FH,30H,31H,32H,33H,34H; DB 35H,36H,37H,38H,39H,3AH,3BH,3CH,3DH,3EH,3FH,40H,41H,42H,43H,44H,45H,46H,47H,48H; DB 49H,4AH,4BH,4CH,4DH,4EH,4FH,50H,51H,52H,53H,54H,55H,56H,57H,58H,59H,5AH,5BH,5CH,5DH,61H,62H,63H; TABDY3:DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H; DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H; DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H; TABDY2:DB 00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H; DB 00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H; DB 00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H,00H,02H; TABDY4:DB 00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H; DB 00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H; DB 00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H,00H,04H; TABDY5:DB 00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H; DB 00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H; DB 00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H,00H,06H; DEL:MOV R7,#0FFH; DEL1:MOV R6,#0A0H; DEL2:MOV R5,#03H; DEL3:DJNZ R5,DEL3; DJNZ R6,DEL2; DJNZ R7,DEL1; RET; DELAY:MOV R7,#0FFH; MOV R6,#03FH; IN:DJNZ R7,IN; DJNZ R6,IN; RET; DLY8:MOV R7,#0FFH; DL:DJNZ R7,DL; RET; END

ASM ORG 09B0H QUE： MOV R3，#50H QUE1 MOV A，R3 MOV R0，A MOV R7，#0AH CLR 00H MOV A，@R0 Q12： INC R0 MOV R2，A CLR C MOV 22H，@R0 CJNE A，22H，Q13 SETB C Q13： MOV A，R2 JC Q11 SETB 00H XCH A，@R0 DEC R0 XCH A，@R0 INC R0 Q11： MOV A，@R0 DJNZ R7，Q12 JB 00H，QUE1 SJMP $ END

51单片机实验含双机串口通信汇编指令 ORG 0000H mov p1,#0ffh mov p3,#0ffh ;mov p3,#00h mov p1,#00h MOV SCON,#50H;设置成串口1方式 MOV TMOD,#20H;波特率发生器T1工作在模式2上 MOV PCON,#80H;波特率翻倍为2400x2=4800BPS MOV TH1,#0faH;预置初值(按照波特率2400BPS预置初值) MOV TL1,#0FaH;预置初值(按照波特率2400BPS预置初?1 setb tr1 LOOP:JnB P3.2,WRIT; LCALL DELAY10 SETB P1.0 LCALL DELAY10 SETB P1.3 LCALL DELAY10 CLR P1.3 LCALL DELAY10 LCALL DELAY10 CLR P1.0 WRIT:JnB P3.3,LOOP;判断K1是否按下,如果没有按下就 lCALL DELAY10;延时10毫秒消触点抖动 JB P3.2,WRIT;去除干扰信号 JB P3.2,$;等待按键松? SETB p1.0 SETB P1.3;? mov a,p1 swap a anl a,#0fh add a,#03h mov @r1,a movc a,@a+pc;将16进制的字符AF发送到串口去 MOV SBUF,A;将AF通过单片机的串行口发送数据出去 sjmp writ asctab:db '1','2','3','4','5','6','7','8','9' db '0','*','#','a','b','c','d' ;10毫秒延时子程序 DELAY10:MOV R4,#20 D2:MOV R5,#248 DJNZ R5,$ DJNZ R4,D2 RET end

汇编语言编写的子程序代码 ;*********************************************************** ;* 读93C46 * ;*********************************************************** READ: PUSH ACC CLR P1.0 LCALL DLYA SETB P1.0 MOV R4,#9 ANL A,#3FH ADD A,#80H SETB C RED1: CLR P1.1 MOV P1.2,C RLC A SETB P1.1 DJNZ R4,RED1 MOV R4,#8 RED2: CLR P1.1 SETB P1.1 MOV C,P1.3 RLC A DJNZ R4,RED2 MOV R3,A MOV R4,#8 RED3: CLR P1.1 SETB P1.1 MOV C,P1.3 RLC A DJNZ R4,RED3 MOV R2,A CLR P1.1 CLR P1.0 LCALL DLYA POP ACC RET

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