Question

单片机小的编程,编了下不知道对不对!望大家指正谢谢!

将内部RAM中30H~37H单元的16个拼装4位二进制数0～F转换成ASCⅡ码，并存入内部数据RAM以40H为首地址的区域中。
例如：转换前： 地址：30H 31H 32H 33H 34H 35H 36H 37H
数据：01H 23H 45H 67H 89H 0ABH 0CDH 0EFH
转换后：
地址：40H 41H 42H 43H 44H 45H 46H 47H 48H 49H 4AH 4BH 4CH 4DH 4EH 4FH
数据：30H 31H 32H 33H 34H 35H 36H 37H 38H 39H 41H 42H 43H 44H 45H 46H
ORG 0000H
SJMP MAIN
ORG 0050H
MAIN: MOV R2, #8
MOV R0,#20H
MOV R1,#30H
MOV DPTR, #ASCTB
LOOP:MOV A, @R0
ANL A, #0F0H
SWAP A
ACALL TRANS
MOV A, @R0
ANL A, #0F0H
ACALL TRANS
INC R0
DJNZ R2, LOOP
SJMP $
TRANS: MOVC A, @A+DPTR
MOV @R1, A
INC R1
RET
ASCTB: DB 30H,31H,32H,33H,34H,35H,36H,37H,38H,39H
DB 41H,42H,43H,44H,45H,46H
END

Answer 1

修改了错误，增加了原始数据，如下所示。
ORG 0000H
SJMP MAIN
ORG 0050H
MAIN:

;01H 23H 45H 67H 89H 0ABH 0CDH 0EFH
MOV 30H, #01H
MOV 31H, #23H
MOV 32H, #45H
MOV 33H, #67H
MOV 34H, #89H
MOV 35H, #0ABH
MOV 36H, #0CDH
MOV 37H, #0EFH

MOV R2, #8
MOV R0, #30H ;是30，不是20
MOV R1, #40H ;是40, 不是30
MOV DPTR, #ASCTB
LOOP:
MOV A, @R0
ANL A, #0F0H
SWAP A
ACALL TRANS
MOV A, @R0
ANL A, #0FH ;是0F，不是F0
ACALL TRANS
INC R0
DJNZ R2, LOOP
SJMP $

TRANS:
MOVC A, @A+DPTR
MOV @R1, A
INC R1
RET

ASCTB: DB 30H,31H,32H,33H,34H,35H,36H,37H,38H,39H
DB 41H,42H,43H,44H,45H,46H

END

Answer 2

修改了错误，增加了原始数据，如下所示。
ORG
0000H
SJMP
MAIN
ORG
0050H
MAIN:
;01H
23H
45H
67H
89H
0ABH
0CDH
0EFH
MOV
30H,
#01H
MOV
31H,
#23H
MOV
32H,
#45H
MOV
33H,
#67H
MOV
34H,
#89H
MOV
35H,
#0ABH
MOV
36H,
#0CDH
MOV
37H,
#0EFH
MOV
R2,
#8
MOV
R0,
#30H
;是30，不是20
MOV
R1,
#40H
;是40,
不是30
MOV
DPTR,
#ASCTB
LOOP:
MOV
A,
@R0
ANL
A,
#0F0H
SWAP
A
ACALL
TRANS
MOV
A,
@R0
ANL
A,
#0FH
;是0F，不是F0
ACALL
TRANS
INC
R0
DJNZ
R2,
LOOP
SJMP
$
TRANS:
MOVC
A,
@A+DPTR
MOV
@R1,
A
INC
R1
RET
ASCTB:
DB
30H,31H,32H,33H,34H,35H,36H,37H,38H,39H
DB
41H,42H,43H,44H,45H,46H
END