Question

我收到消息“（76）每当我输入时，相对跳出超出范围的000Eh字节”和（79）相对跳出范围超出0007h字节“ CMP八进制，'3'。我应该做到第7个八进制数，但是当我尝试做第三个八进制数时它总是给我一个错误。我只能做0,1和2直到它给了我一个错误。我不知道自己应该做什么。就我所教的而言，我已尽力而为，但我仍然无法得到任何结果。请帮助我。我是新的装配。 PS我正在使用DOSBox 0.74

.Model small

.data
txt1 db "Octal to Binary Converter$"
txt2 db "Enter an Octal Symbol: $"
title0 db "000$"
title1 db "001$"
title2 db "010$"
title3 db "011$"
title4 db "100$"
title5 db "101$"
title6 db "110$"
title7 db "111$"

mess db "Press ESC to exit...$"
invalid db "Input is invalid. Try again.$"
keypress db ?
octal db ?

.code
Start:
Mov AX, @data
Mov ds, ax

sys_st:
Mov AH, 6
Mov AL, 0
Mov BH, 15
Mov ch, 0
Mov cl, 0
Mov DH, 100
Mov DL , 100
Int 10H

Mov AH, 2
Mov BH, 0
Mov DL, 5
Mov DH, 5
Int 10H 

Mov AH, 9
Lea DX, txt1 
Int 21H

JMP sys_st2

sys_st2:
Mov AH, 2
Mov BH, 0
Mov DL, 5
Mov DH, 8
Int 10H 

Mov AH, 9
Lea DX, txt2 
Int 21H 

Mov AH, 1
Int 21H
Mov octal, AL 

CMP octal, '0'
JE sys_0

CMP octal, '1'
JE sys_1

CMP octal, '2'
JE sys_2

CMP octal, '3'
JE sys_3


CMP octal, '0'
JNE sys_invalid

CMP octal, '1'
JNE sys_invalid

CMP octal, '2'
JNE sys_invalid

CMP octal, '3'
JNE sys_invalid

sys_0:
Mov AH, 2
Mov BH, 0
Mov DL, 11
Mov DH, 11 
Int 10H

Mov AH, 9
Lea DX, title0 
Int 21H 

Mov AH, 2 
Mov BH, 0
Mov DL, 5
Mov DH, 15 
Int 10H 

JMP sys_exit

sys_1:
Mov AH, 2 
Mov BH, 0
Mov DL, 11
Mov DH, 11 
Int 10H 

Mov AH, 9
Lea DX, title1
Int 21H 

Mov AH, 2 
Mov BH, 0
Mov DL, 5
Mov DH, 15 
Int 10H 

JMP sys_exit

sys_2:
Mov AH, 2 
Mov BH, 0
Mov DL, 11
Mov DH, 11 
Int 10H 

Mov AH, 9
Lea DX, title2
Int 21H 

Mov AH, 2 
Mov BH, 0
Mov DL, 5
Mov DH, 15 
Int 10H 

JMP sys_exit

sys_3:
Mov AH, 2 
Mov BH, 0
Mov DL, 11
Mov DH, 11 
Int 10H 

Mov AH, 9
Lea DX, title3
Int 21H 

Mov AH, 2 
Mov BH, 0
Mov DL, 5
Mov DH, 15 
Int 10H 

JMP sys_exit

sys_invalid: 
Mov AH, 2 
Mov BH, 0
Mov DL, 5 
Mov DH, 11 
Int 10H 

Mov AH, 9
Lea DX, invalid 
Int 21H 

Mov AH, 1 
Int 21H 
JMP sys_st 

sys_exit: 

Mov AH, 2
Mov BH, 0
Mov DL, 5
Mov DH, 14
Int 10H 

Mov AH, 9
Lea DX, mess 
Int 21H 

Mov AH, 1 
Int 21H 
Mov keypress, AL 

CMP keypress, 27
JNE sys_exit 

JMP exit 

Exit: 
Mov AH, 4ch 
Int 21H 
End Start

Answer 1

在您的文件中添加.386指令，以便能够使用80386引入的较大偏移的相对跳转指令。或者，找到有问题的跳转并将其替换为如下内容：

   jnz foo ; this jump is too long

替换为

   jz bar ; opposite conditional
   jmp foo ; unconditional jumps can have larger offsets
bar:
   ...

相对跳出范围

1 个答案: