dzyx.asm.txt

1.只要进去之后屏幕显示一排字母

  inc si 
 cmp [si],ah 
 je gobackto_di 
 cmp present_position,78d 
 je from_one 
 jmp nextsi 
from_one:mov present_position,01h  
 jmp gobackto_si 
 recycle:mov letter_counter,00h 
 mov present_position,01d 
 lea si,position_flag 
 mov cx,00h 
 mov ah,00h 
clearsi: mov [si],ah 
 inc cx 
 cmp cx,78d 
 je nextcycle 
 inc si 
 jmp clearsi 
nextcycle:  
 lea di,letters 
 lea si,position_flag 
 add present_position,31d 
 cmp present_position,78 
 ja from_front 
gobackto_si: 
 add si,word ptr present_position 
 dec si 
 mov ah,[si] 
 cmp ah,01h 
 je find_zero 
gobackto_di: 
 mov ah,01h 
 mov [si],ah 
 add di,word ptr present_position 
 dec di 
 mov dl,present_position 
 mov ah,02h  
 mov bh,00h  
 mov dh,01h 
 int 10h 
 mov cx,00h 
nextrow: push cx  
 mov cx,00h 
out_cycle: ; 延迟 
 push cx 
 mov cx,00h 
in_cycle: 
 add cx,01h 
 cmp cx,1000 
 jne in_cycle  
 push dx 
 mov ah,06h ;从键盘输入字符 
 mov dl,0ffh 
 int 21h 
 pop dx 
 jz pass  
 cmp al,1bh ;如果键入ESC，则返回主菜单 
 je to_start1 
 cmp al," " ;如果键入SPACE，则游戏暂停 
 je pause 
 cmp al,[di] ;输入字母正确！则字母消失 
 je disappear 
pass: pop cx 
 inc cx 
 cmp cx,speed 
 je print 
 jmp out_cycle 
pause: push dx ;暂停处理 
 mov ah,06h 
 mov dl,0ffh 
 int 21h 
 pop dx 
 cmp al," " 
 jne pause 
 jmp pass 
to_start1: ;返回主菜单 
 jmp start 
print:  
 mov ah,0ah ;在当前光标位置写空格  
 mov al," " 
 mov bh,00h 
 mov cx,01h 
 int 10h 
 inc dh 
 mov ah,02h ;改变光标位置 
 mov bh,00h 
 int 10h 
 mov ah,0ah ;在当前光标位置写字母  
 mov al,[di] 
 mov bh,00h 
 mov cx,01h 
 int 10h 
 pop cx 
 inc cx 
 cmp cx,21d 
 je print_next_letter 
 jmp nextrow ;下一行 
disappear: ;击中字母后输出空格 
 pop cx 
 pop cx 
 mov ah,0ah 
 mov al," " 
 mov bh,00h 
 mov cx,01h 
 int 10h 
 jmp hit  
print_next_letter:  
 lea si,life_flag 
 add si,word ptr present_position 
 dec si 
 mov ah,0ah 
 mov al," " 
 mov bh,00h 
 mov cx,01h 
 int 10h 
 inc dh  
 mov ah,02h 
 mov bh,00h 
 int 10h 
 mov ah,0ah 
 mov al," " 
 mov bh,00h 
 mov cx,01h 
 int 10h 
 mov ah,1 
 mov [si],ah 
 hit: mov ah,02h 
 mov bh,00h 
 mov dh,01h 
 mov dl,present_position 
 int 10h 
 mov al,[di] ; 出现下一个新字母的数法 
 add al,7 
 cmp al,7ah 
 ja convey_letter 
 mov ah,0ah 
 mov bh,00h 
 mov cx,01h 
 int 10h 
 mov [di],al 
 add letter_counter,01h 
 jmp nextcycle 
 convey_letter:  
 sub al,7ah 
 add al,61h 
 mov ah,0ah 
 mov bh,00h 
 mov cx,01h 
 int 10h 
 mov [di],al 
 add letter_counter,01h 
 jmp nextcycle  
 clear_screen 01,01,23,78 
 mov ah,02h 
 mov bh,00h 
 mov dh,11d 
 mov dl,20d 
 int 10h 
 inc dh 
 inc dh 
 mov ah,02h 
 mov bh,00h 
 int 10h 
notkey:  
 mov ah,07h 
 int 21h 
 cmp al,0dh 
 je to_start 
 cmp al,1bh 
 je over 
 jmp notkey 
to_start:  
 clear_screen 00,00,24,79 
 jmp start 
over: clear_screen 01,01,23,78  
 mov ah,02h 
 mov bh,00h 
 mov dh,11d 
 mov dl,15h 
 int 10h 
 mov ah,02h 
 mov bh,00h 
 mov dh,13d 
 mov dl,15h 
 int 10h 
 mov ah,07h 
 int 21h 
 mov ah,07h 
 int 21h 
 clear_screen 00,00,24,79  
 mov ax,4c00h 
 int 21h 
main endp 
code ends 
end start