Question

利用89c51单片机控制8*8 LED点阵的显示

哪个大侠能帮忙写下利用89c51单片机控制8*8 LED点阵显示的汇编程序，随便写几个程序，能使显示的字符滚动或者呈现其他效果...

Answer 1

ORG 00H
START: NOP
MOV R3,#3
LOP2: MOV R4,#8
MOV R2,#0
LOP1: MOV P1,#0FFH
MOV DPTR,#TABA
MOV A,R2
MOVC A,@A+DPTR
MOV P3,A
INC R2
LCALL DELAY
DJNZ R4,LOP1
DJNZ R3,LOP2

MOV R3,#3
LOP4: MOV R4,#8
MOV R2,#7
LOP3: MOV P1,#0FFH
MOV DPTR,#TABA
MOV A,R2
MOVC A,@A+DPTR
MOV P3,A
DEC R2
LCALL DELAY
DJNZ R4,LOP3
DJNZ R3,LOP4

MOV R3,#3
LOP6: MOV R4,#8
MOV R2,#0
LOP5: MOV P3,#00H
MOV DPTR,#TABB
MOV A,R2
MOVC A,@A+DPTR
MOV P1,A
INC R2
LCALL DELAY
DJNZ R4,LOP5
DJNZ R3,LOP6

MOV R3,#3
LOP8: MOV R4,#8
MOV R2,#7
LOP7: MOV P3,#00H
MOV DPTR,#TABB
MOV A,R2
MOVC A,@A+DPTR
MOV P1,A
DEC R2
LCALL DELAY
DJNZ R4,LOP7
DJNZ R3,LOP8
LJMP START

DELAY: MOV R5,#10
D2: MOV R6,#20
D1: MOV R7,#248
DJNZ R7,$
DJNZ R6,D1
DJNZ R5,D2
RET

TABA: DB 0FEH,0FDH,0FBH,0F7H,0EFH,0DFH,0BFH,07FH
TABB: DB 01H,02H,04H,08H,10H,20H,40H,80H
END