51单片机汇编程序集Word下载.docx
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- 上传时间:2023-01-29
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51单片机汇编程序集Word下载.docx
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CLRC
EBC11:
MOVX@DPTR,A
INCDPTR
DJNZR7,EBC11
片外RAM初始化子程序(双字节个单元)
EBCLR2:
MOVA,R7
JZEBC21
INCR6EBC21:
DJNZR7,EBC21
DJNZR6,EBC21
内部RAM数据复制程序
入口:
R0,R7
占用资源:
A
堆栈需求:
2字节
出口:
R1
IBMOV:
ADDA,R7
MOVR0,A
MOVA,R1
MOVR1,AIBM1:
DECR0
DECR1
MOVA,@R0
DJNZR7,IBM1
外部RAM数据复制程序
ADDPH,ADDPL,R7;
ACC
R0,R1
EBMOV1:
ADDCA,ADDPH
ADDA,R1
XCHA,R0
ADDCA,#00H
MOVP2,AEBM11:
CJNER0,#0FFH,EBM12
DECP2EBM12:
DECDPL
MOVA,DPL
CJNEA,#0FFH,EBM13
DECDPHEBM13:
MOVXA,@R0
DJNZR7,EBM11
ADDPH,ADDPL,R6,R7;
EBMOV2:
MOVA,R6
ADDCA,R6
MOVP2,A
JZEBM21
INCR6EBM21:
CJNER0,#0FFH,EBM22
DECP2EBM22:
CJNEA,#0FFH,EBM23
DECDPHEBM23:
DJNZR7,EBM21
DJNZR6,EBM21
外部RAM数据复制到内部RAM程序
R0
ITEMOV:
MOVR0,AITEM1:
CJNEA,#0FFH,ITEM2
DECDPHITEM2:
MOVXA,@DPTR
MOV@R0,A
DJNZR7,ITEM1
限幅滤波程序
A,SDAT,DELTY;
B
JUGFILT:
MOVB,A
SUBBA,SDAT
JNCJUGFT1
CPLA
INCA
JUGFT1:
SETBA
SUBBA,#DELTY
JNCJUGFT3
MOVA,SDAT
JUGFT3:
MOVA,B
MOVSDAT,A
中位值滤波程序
ADDPH,ADDPL,N;
ESELSORT
4字节
MEDFILT:
LCALLESELSORT
MOVA,N
RRCA
ADDA,ADDPL
JNCMEDFT1
INCDPHMEDFT1:
N点算术平均滤波
B,R3,R4
AVFILT:
MOVR3,A
MOVR4,A
MOVR7,NAVFT1:
ADDA,R4
JNCAVFT2
INCR3AVFT2:
DJNZR7,AVFT1
MOVR7,N
MOVR2,#00H
LCALLNDIV31
MOVA,R4
N点加权平均滤波
QAVFILT:
MOVP2,ADDPH
MOVR1,ADDPL
MOVDPTR,#QAVTABQAVFT1:
MOVCA,@A+DPTR
MOVXA,@R1
MULAB
ADDCA,R3
DJNZR7,QAVFT1
JNBACC.7,QAVFT2
INCR3QAVFT2:
MOVA,R3
QAVTAB:
DB
一阶加权滞后滤波程序
A,DELTY
BQFILT:
MOVDPTR,#ABTAB
MOVR3,B
MOVA,#01H
MOVB,DELTY
JNBACC.7,FT1
INCR3FT1:
MOVDELTY,A
BQTAB:
DB80H,80H
双字节取补程序/(R3R4)=(R3R4);
R3,R4
CMPT:
ADDA,#01H
N节取补程序/([R0])=([R0]);
ACC,B
NCMPTN:
MOVB,R0
SETBCNCPT1:
INCR0
DJNZR7,NCPT1
MOVR0,B
双字节无符号数加法程序(R3R4+R6R7)=(R3R4)
R3,R4,R6,R7;
R3,R4,CF
NADD:
N字节无符号数加法程序([R0]+[R1])=([R0])
R0,R1,R7
R0,CF
NADDN:
CLRCNADN1:
ADDCA,@R1
DJNZR7,NADN1
双字节无符号数减法程序(R3R4-R6R7)=(R3R4)
NSUB:
SUBBA,R7
SUBBA,R6
N字节无符号数减法程序([R0]-[R1])=([R0])
NSUBN:
CLRCNSUBN1:
SUBBA,@R1
DJNZR7,NSUBN1
单字节无符号数乘法程序(R3R4*R7)=(R2R3R4)
R3,R4,R7
R2,R3,R4
NMUL21:
MOVB,R7
XCHA,R3
ADDA,R3
ADDCA,B
MOVR2,A
CLROV
单字节无符号数乘法程序(R2R3R4*R7)=(R5R2R3R4)
R2,R3,R4,R6,R7;
R5,R2,R3,R4NMUL31:
XCHA,R2
ADDA,R2
MOVR5,A
单字节无符号数乘法程序(R5R2R3R4*R7)=(R7R5R2R3R4)
R5,R2,R3,R4,R7;
R7,R5,R2,R3,R4NMUL41:
XCHA,R5
ADDA,R5
MOVR7,A
双字节无符号数乘法程序(R3R4*R6R7)=(R5R2R3R4)
R5,R2,R3,R4NMUL22:
XCHA,R4
MOVR5,B
MOVB,R6
ADDCA,R2
双字节无符号数乘法程序(R2R3R4*R6R7)=(R1R5R2R3R4)
R1,R5,R2,R3,R4NMUL32:
ADDCA,R1
MOVA,R2
ADDCA,R5
XCHA,R1
N字节无符号数乘法程序([R0]*[R1])=([R0])
R0,R1,M,N
ACC,B,R2,R5,R6,R7,NCNT
NMULMN:
MOVA,M
ADDA,R0
ADDA,N
MOVR6,A
MOVB,M
MOVNCNT,BNMLMN1:
XCHA,@R1
DJNZNCNT,NMLMN1
MOVNCNT,BNMLMN2:
XCHA,@R0
MOVA,R5
CLRCNMLMN3:
MOVB,@R1
ADDCA,@R0
DJNZR7,NMLMN3
INCR6
DJNZNCNT,NMLMN2
SUBBA,M
SUBBA,N
单字节无符号除法程序(R2R3R4/R7)=(R2)R3R4余数R7;
R2,R3,R4,R7;
ACC,B,F0
3字节
(R2),R3,R4,R7,OVNDIV31:
DIVAB
PUSHA
MOVR2,B
MOVB,#10HNDV311:
RLCA
MOVF0,C
JBF0,NDV312
JCNDV313NDV312:
INCR4NDV313:
DJNZB,NDV311
POPA
JZNDV314
SETBOV
NDV314:
单字节无符号除法程序(R5R2R3R4/R7)=(R5)R2R3R4余数R7
(R5),R2,R3,R4,R7,OVNDIV41:
MOVB,#18HNDV411:
JBF0,NDV412
JCNDV413NDV412:
INCR4NDV413:
DJNZB,NDV411
JZNDV414
SETBOVNDV414:
双字节无符号除法程序(R5R2R3R4/R6R7)=(R2)R3R4余数R6R7
R5,R2,R3,R4,R6,R7;
(R2),R3,R4,R6,R7,OVNDIV42:
MOVB,#00HNDV421:
JCNDV422
INCB
SJMPNDV421NDV422:
PUSHB
MOVB,#10HNDV423:
JBF0,NCV424
JCNDV425NCV424:
INCR4NDV425:
DJNZB,NDV423
JNZNDV426
SETBOVNDV426:
N字节无符号除法程序(组合)([R0]/[R1])=([R0])
ACC,R2,R3,R4,R5,R7,NCNT,F0,NADDN,NSUBBN,NRLCN
NDIVMN:
MOVNCNT,A
MOVR2,#00HNDVMN1:
LCALLNSUBN
JCNDVMN2
INCR2
SJMPNDVMN1NDVMN2:
LCALLNADDN
MOVA,NCNT
SWAPA
RRA
MOVNCNT,ANDVMN3:
MOVR7,M
LCALLNRLCN
MOVA,R4
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