倒车雷达的设计最完整的毕业设计

倒车雷达的设计

MOV A, R7

ADDC A, #00H MOV R7, A

MULLOOP2: DJNZ 46H, MULLOOP1 RET ;

;**************************************************** ;* 四字节/两字节无符号数除法程序 *

;**************************************************** ;R7R6R5R4/R3R2=R7R6R5R4(商)...R1R0(余数) ;

DIV4BY2: MOV 46H, #20H MOV R0, #00H MOV R1, #00H DIVLOOP1: MOV A, R4 RLC A MOV R4, A MOV A, R5 RLC A MOV R5, A MOV A, R6 RLC A MOV R6, A MOV A, R7 RLC A MOV R7, A MOV A, R0 RLC A MOV R0, A MOV A, R1 RLC A MOV R1, A CLR C

MOV A, R0 SUBB A, R2 MOV B, A MOV A, R1

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沈阳工程学院毕业设计（论文）

SUBB A, R3 JC DIVLOOP2 MOV R0, B MOV R1, A DIVLOOP2: CPL C

DJNZ 46H, DIVLOOP1 MOV A, R4 RLC A MOV R4, A MOV A, R5 RLC A MOV R5, A MOV A, R6 RLC A MOV R6, A MOV A, R7 RLC A MOV R7, A RET ;

delay_250:

push psw push 07h mov r7,#0ffh delay_250_1: nop nop nop nop

djnz r7,delay_250_1 pop 07h pop psw ret

;----------------------- END

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