求高人读程序，求助？
麻烦高人帮我看看这段代码啊，我只要了解每段程序的大概作用，麻烦高人啊，急急急急啊[local]2[/local]
请在附件里的那个asm加些注释，
diama.rar
(2.46 KB)
程序代码： data_seg segment
car db 2
db 40h,0bh,0,0
db 02ah,0bh,0,1
jeep db 2
db 40h,0bh,0,0
db 02ah,0bh,0,-1
star2 db 8
db 40h,0bh,0,0
db 40h,0bh,1,0
db 02ah,0bh,0,1
db 02ah,0bh,-1,0
db 40h,0bh,0,1
db 40h,0bh,1,0
db 02ah,0bh,0,1
db 02ah,0bh,-1,0
star3 db 8
db 40h,0bh,0,0
db 40h,0bh,1,0
db 02ah,0bh,0,-1
db 02ah,0bh,-1,0
db 40h,0bh,0,-1
db 40h,0bh,1,0
db 02ah,0bh,0,-1
db 02ah,0bh,-1,0
star db 2
db 40h,0bh,0,0
db 02ah,0,0,1
star1 db 2
db 40h,0bh,0,0
db 02ah,0,0,-1
char_cnt dw ?
pointer dw ?
line_on db ?
col_on db ?
char0 db ?
char1 db ?
char2 db ?
count db ?
count0 db ?
count1 db ?
count_cx dw ?
data_seg ends
;---------------------------------------
code_seg segment
assume cs:code_seg,ds:data_seg
main proc far
push ds
sub ax,ax
sub cx,cx
push ax
push cx
mov ax,data_seg
mov ds,ax
mov count0,4
mov count,5
mov count1,3
mov char1,4
mov char2,6
mov count_cx,2
again:
call clear_screen
lea di,star
mov dh,3
mov dl,2
call move_shape
dec count0
lea di,star1
mov dh,17
mov dl,76
call move_shape
dec count0
lea di,jeep
mov dh,4
mov dl,2
call move_shape
dec count0
lea di,car
mov dh,16
mov dl,76
call move_shape
again2: mov char0,4
again1: dec char0
je exit0
lea di,star2
mov dh,char1
mov dl,2
add char1,4
call must_2
dec char0
je exit0
lea di,star3
mov dh,char2
mov dl,76
add char2,7
call must_2
jmp again1
exit0: dec count1
je exit02
dec char1
lea di,jeep
mov dh,10
mov dl,76
call must_2
dec count1
jmp again2
exit02: mov count,5
mov count0,4
mov count1,3
mov char1,4
mov char2,6
dec count_cx
again25: mov char0,4
again15: dec char0
je exit05
lea di,star3
mov dh,char1
mov dl,75
add char1,4
call must_2
dec char0
je exit05
lea di,star2
mov dh,char2
mov dl,3
add char2,7
call must_2
jmp again15
exit05: dec count1
je exit025
dec char1
lea di,car
mov dh,10
mov dl,3
call must_2
dec count1
jmp again25
exit025: pop cx
ret
main endp
;----------------------------
clear_screen proc near
push ax
push bx
push cx
push dx
mov ah,6
mov al,0
mov ch,0
mov cl,0
mov dh,24
mov dl,79
mov bh,7
int 10h
pop dx
pop cx
pop bx
pop ax
ret
clear_screen endp
;-------------------------------------
move_shape proc near
push ax
push bx
push cx
push dx
push di
mov ah,0fh
int 10h
sub ch,ch
mov cl,[di]
inc di
mov char_cnt,cx
mov pointer,di
mov line_on,dh
mov col_on,dl
plot_next:
add dh,[di+2]
add dl,[di+3]
cmp count0,3
je exit2
cmp count0,2
je exit9
cmp count0,1
je exit10
cmp dl,78
jb mov_crsr
jmp exit1
exit2: cmp dl,1
jnb mov_crsr
jmp exit1
exit9: cmp dh,17
jb mov_crsr
jmp exit1
exit10: cmp dh,3
ja mov_crsr
exit1: pop di
pop dx
pop cx
pop bx
pop ax
ret
mov_crsr:
mov ah,2
int 10h
mov al,[di]
mov bl,[di+1]
push cx
mov cx,1
mov ah,09
int 10h
pop cx
add di,4
loop plot_next
exit4: dec count
je exit3
call dly_qrtr
jmp exit4
exit3: call erase
mov count,5
jmp short plot_next
move_shape endp
;----------------------------------------
must_2 proc near
push ax
push bx
push cx
push dx
push di
mov ah,0fh
int 10h
sub ch,ch
mov cl,[di]
inc di
mov char_cnt,cx
mov pointer,di
mov line_on,dh
mov col_on,dl
cmp count_cx,1
je plot_next2
plot_next1:
add dh,[di+2]
add dl,[di+3]
cmp char0,2
je exit12
cmp count1,2
je exit12
cmp dl,78
jb mov_crsr1
sub dl,2
jmp exit13
exit12: cmp dl,0
ja mov_crsr1
add dl,2
jmp exit13
exit13: pop di
pop dx
pop cx
pop bx
pop ax
ret
plot_next2:
add dh,[di+2]
add dl,[di+3]
cmp char0,2
je exit122
cmp count1,2
je exit122
cmp dl,2
ja mov_crsr2
add dl,2
jmp exit13
exit122: cmp dl,76
jb mov_crsr2
sub dl,2
jmp exit13
mov_crsr1:
mov ah,2
int 10h
mov al,[di]
mov bl,[di+1]
push cx
mov cx,1
mov ah,09
int 10h
pop cx
add di,4
loop plot_next1
jmp exit41
mov_crsr2:
mov ah,2
int 10h
mov al,[di]
mov bl,0
push cx
mov cx,1
mov ah,09
int 10h
pop cx
add di,4
loop plot_next2
exit41: dec count
je exit31
call dly_qrtr
jmp exit41
exit31: cmp count_cx,1
je exit51
call erase1
mov count,5
jmp plot_next1
exit51: call erase2
mov count,5
jmp plot_next2
must_2 endp
;--------------------------------------------
erase proc near
cmp count0,4
jne exit6
add col_on,2
jmp exit
exit6: cmp count0,3
jne exit7
sub col_on,2
jmp exit
exit7: cmp count0,2
jne exit8
inc line_on
jmp exit
exit8: cmp count0,1
jne exit
dec line_on
exit: mov dh,line_on
mov dl,col_on
mov cx,char_cnt
mov di,pointer
ret
erase endp
;--------------------------------
erase1 proc near
cmp char0,2
je exit15
cmp char0,3
je exit14
cmp char0,1
je exit14
cmp count1,2
je exit16
jmp exit01
exit14: add col_on,4
jmp exit01
exit15: sub col_on,4
jmp exit01
exit16: sub col_on,2
exit01: mov dh,line_on
mov dl,col_on
mov cx,char_cnt
mov di,pointer
ret
erase1 endp
;------------------------------------------------
erase2 proc near
cmp char0,2
je exit152
cmp char0,3
je exit142
cmp char0,1
je exit142
cmp count1,2
je exit162
jmp exit012
exit142: sub col_on,4
jmp exit012
exit152: add col_on,4
jmp exit012
exit162: add col_on,2
exit012: mov dh,line_on
mov dl,col_on
mov cx,char_cnt
mov di,pointer
ret
erase2 endp
;-----------------------------------------
dly_qrtr proc near
push cx
push dx
mov dx,25
dll: mov cx,65000
dl2: loop dl2
dec dx
jnz dll
pop dx
pop cx
ret
dly_qrtr endp
;---------------------------------------
code_seg ends
end main
;---------------------------------
[ 本帖最后由 Elucross 于 2010-12-1 14:47 编辑 ]
