我必须建立一个基地转换器在8086大会。
用户必须选择他的基数,然后输入一个数字,然后,程序将显示他的数字在3个基地[他带来了一个十进制数,在此之后,他将看到他的数字在十六进制,oct和bin。
第一个问题是,我怎么把他给我的数字,从字符串,转换成一个数字?
证交会的问题是,我如何转换?通过RCR,然后adc一些变量?
下面是我的代码:
data segment
N=8
ERROR_STRING_BASE DB ,10,13, " THIS IS NOT A BASE!",10,13, " TRY AGINE" ,10,13," $"
OPENSTRING DB " Welcome, to the Base Convertor",10,13," Please enter your base to convert from:",10,13," <'H'= Hex, 'D'=Dec, 'O'=oct, 'B'=bin>: $"
Hex_string DB "(H)" ,10,13, "$"
Octalic_string DB "(O) ",10,13, "$"
Binar_string DB "(B)",10,13, "$"
Dece_string DB "(D)",10,13, "$"
ENTER_STRING DB ,10,13, " Now, Enter Your Number (Up to 4 digits) ",10,13, "$"
Illegal_Number DB ,10,13, " !!! This number is illegal, lets Start again" ,10,13,"$"
BASED_BUFFER DB N,?,N+1 DUP(0)
Number_buffer db N, ? ,N+1 DUP(0)
TheBase DB N DUP(0)
The_numer DB N DUP(0)
The_binNumber DB 16 DUP(0)
data ends
sseg segment stack
dw 128 dup(0)
sseg ends
code segment
assume ss:sseg,cs:code,ds:data
start: mov ax,data
mov ds,ax
MOV DX,OFFSET OPENSTRING ;PUTS THE OPENING SRTING
MOV AH,9
INT 21H
call EnterBase
CALL CheckBase
HEXBASE: CALL PRINTtheNUMBER
MOV DX,OFFSET Hex_string
MOV AH,9
INT 21h
JMP I_have_the_numberH
oCTALICbASE: CALL PRINTtheNUMBER
MOV DX,OFFSET Octalic_string
MOV AH,9
INT 21h
JMP I_have_the_numberO
BINBASE:CALL PRINTtheNUMBER
MOV DX,OFFSET Binar_string
MOV AH,9
INT 21h
JMP I_have_the_numberB
DECBASE: CALL PRINTtheNUMBER
MOV DX,OFFSET Dece_string
MOV AH,9
INT 21h
JMP I_have_the_numberD
I_have_the_numberH: CALL BINcalculation
CALL OCTcalculation
CALL DECcalculation
I_have_the_numberO: CALL BINcalculation
CALL DECcalculation
CALL HEXcalculation
I_have_the_numberB: CALL OCTcalculation
CALL DECcalculation
CALL HEXcalculation
I_have_the_numberD: CALL BINcalculation
CALL OCTcalculation
CALL HEXcalculation
exit: mov ax, 4c00h
int 21h
EnterBase PROC
MOV DX,OFFSET BASED_BUFFER ; GETS THE BASE
MOV AH,10
INT 21H
LEA DX,BASED_BUFFER[2]
MOV BL,BASED_BUFFER[1]
MOV BH,0
MOV BASED_BUFFER[BX+2],0
LEA SI, BASED_BUFFER[2]
XOR CX, CX
MOV CL, BASED_BUFFER[1]
LEA DI, TheBase
LOL_OF_BASE: MOV DL, [SI]
MOV [DI], DL
INC SI
INC DI
INC AL
RET
EnterBase ENDP
CheckBase proc
CMP TheBase,'H'
JE HEXBASE
CMP TheBase,'h'
JE HEXBASE
CMP TheBase,'O'
JE oCTALICbASE
CMP TheBase,'o'
JE oCTALICbASE
CMP TheBase,'B'
JE BINBASE
CMP TheBase,'b'
JE BINBASE
CMP TheBase,'D'
JE DECBASE
CMP TheBase,'d'
JE DECBASE
CMP TheBase, ' '
je ERRORoFBASE
ERRORoFBASE: MOV DX,OFFSET ERROR_STRING_BASE ;PUTS WORNG BASE Illegal_Number
MOV AH,9
INT 21H
JMP START
CheckBase ENDP
PRINTtheNUMBER PROC
MOV DX,OFFSET ENTER_STRING
MOV AH,9
INT 21h
MOV DX,OFFSET Number_buffer ; GETS THE number
MOV AH,10
INT 21H
LEA DX,Number_buffer[2]
MOV BL,Number_buffer[1]
MOV BH,0
MOV Number_buffer[BX+2],0
LEA SI, Number_buffer[2]
XOR CX, CX
MOV CL, Number_buffer[1]
LEA DI, The_numer
xor AL,AL
LOL_OF_NUMBER_CHECK: MOV DL, [SI]
MOV [DI], DL
INC SI
INC DI
INC AL
CMP AL,5
JE ERRORofNUMBER
LOOP LOL_OF_NUMBER_CHECK
RET
ERRORofNUMBER: MOV DX,OFFSET Illegal_Number ;PUTS WORNG BASE Illegal_Number
MOV AH,9
INT 21H
JMP START
PRINTtheNUMBER ENDP
PROC BINcalculation
XOR CX,CX
XOR AX,AX
MOV CX,4
MOV AX,16
LEA SI, The_binNumber[0]
TheBinarLoop: RCL The_numer,1
ADC [SI],0
INC SI
LOOP TheBinarLoop
ENDP
PROC OCTcalculation
ENDP
PROC DECcalculation
ENDP
PROC HEXcalculation
ENDP
code ends
end start
字符串
它应该看起来像这样:x1c 0d1x
谢谢!2谢谢!
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2条答案
按热度按时间ulydmbyx1#
将ASCII字符串从ANY基解码为整数的算法是相同的:
字符串
for { bin,oct,dec } value(digit)is ascii(digit)-ascii('0 ')
十六进制有点复杂,你必须检查值是否为'a'-'f',并将其转换为10-15
将整数转换为ascii(以x为基数)也是类似的,你必须将该值除以基数,直到它为0,然后在左边添加表示余数的ascii
型
lqfhib0f2#
在EMU8086中复制粘贴下一个小程序并运行它:它将从键盘捕获一个数字作为字符串,然后在BX中将其转换为数字。要将数字存储在“The_numer”中,您必须执行
mov The_numer, bl
:字符串
您需要的proc是
string2number
。请注意过程中:它使用了一个名为“string”的变量,你必须用你自己的变量名来改变它。在call
之后,结果在BX中:如果数字小于256,则可以使用BL中的数字。顺便说一下,字符串总是转换为十进制数。