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第八章实验7的第二种做法(不用栈做传递)

2009-08-28 00:30 218 查看
只用一个循环

assume cs:codesg

datasg segment
    db '1975','1976','1977','1978','1979','1980','1981','1982','1983'      
    db '1984','1985','1986','1987','1988','1989','1990','1991','1992'
    db '1993','1994','1995'
   
    dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514
    dd 345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000
    
    dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
    dw 11542,14430,15257,17800    
    
datasg ends

table segment
    db 21 dup ('year summ ne ?? ')  
    
table ends 

stacksg segment
    db 16 dup (0) 
    
stacksg ends

codesg segment
start:   
    mov ax,datasg
    mov es,ax 
     
    mov ax,table
    mov ds,ax  
    
    mov bx,0     
    mov si,0
    mov cx,21
    
 s0:mov di,0
    ;copy the year data
    mov ax,es:[bx+di]
    mov ds:[si], ax
    mov ax,es:[bx+di+2]
    mov ds:[si+2],ax
     
    ;copy the income data 
    add di,54h   
    mov ax,es:[bx+di]
    mov ds:[si+5],ax 
    mov ax,es:[bx+di+2]
    mov ds:[si+7],ax
    
    ;copy the count of employees   
    add di,54h 

    mov ax,bx
    mov bl,2
    div bl
    mov bx,ax;这里主要的目的是把bx的值设置成该次循环中的一半。因为我们是让bx按两个字在增长,但是此处的雇员人数是按一个字来存放的,所以要把bx的值除以二。

    mov ax,es:[bx+di] 
    mov ds:[si+0ah],ax
    
    ;计算人均收入
    mov ax,ds:[si+5]
    mov dx,ds:[si+7];这里很明显除数是16位的,而被除数是32位的,所以高16位放在dx中,低16位放在ax中。
    mov di,ds:[si+10];拿到除数即雇员人数。

    div  di;做除法,商放在了ax中,余数放在了dx中

    mov ds:[si+0dh],ax  
    
    
    add si,10h;si加10h后指向下一行
    add bx,bx;又要把bx的值恢复成本次循环的开始值。
    add bx,4;把bx的值按2个字节增长。

    loop s0
   
    mov ax,4c00h
    int 21h   
    
codesg ends

end start


调试过程:

-r

AX=0000  BX=0000  CX=02A0  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=143C  ES=143C  SS=144C  CS=1470  IP=0000   NV UP EI PL NZ NA PO NC 
1470:0000 B84C14        MOV	AX,144C                            
-u

1470:0000 B84C14        MOV	AX,144C                            
1470:0003 8EC0          MOV	ES,AX                              
1470:0005 B85A14        MOV	AX,145A                            
1470:0008 8ED8          MOV	DS,AX                              
1470:000A BB0000        MOV	BX,0000                            
1470:000D BE0000        MOV	SI,0000                            
1470:0010 B91500        MOV	CX,0015                            
1470:0013 BF0000        MOV	DI,0000                            
1470:0016 26            ES:	                                   
1470:0017 8B01          MOV	AX,[BX+DI]                         
1470:0019 8904          MOV	[SI],AX                            
1470:001B 26            ES:	                                   
1470:001C 8B4102        MOV	AX,[BX+DI+02]                      
1470:001F 894402        MOV	[SI+02],AX                         
-t

AX=144C  BX=0000  CX=02A0  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=143C  ES=143C  SS=144C  CS=1470  IP=0003   NV UP EI PL NZ NA PO NC 
1470:0003 8EC0          MOV	ES,AX                              
-t

AX=144C  BX=0000  CX=02A0  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=143C  ES=144C  SS=144C  CS=1470  IP=0005   NV UP EI PL NZ NA PO NC 
1470:0005 B85A14        MOV	AX,145A                            
-t

AX=145A  BX=0000  CX=02A0  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=143C  ES=144C  SS=144C  CS=1470  IP=0008   NV UP EI PL NZ NA PO NC 
1470:0008 8ED8          MOV	DS,AX                              
-t

AX=145A  BX=0000  CX=02A0  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=000A   NV UP EI PL NZ NA PO NC 
1470:000A BB0000        MOV	BX,0000                            
-t

AX=145A  BX=0000  CX=02A0  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=000D   NV UP EI PL NZ NA PO NC 
1470:000D BE0000        MOV	SI,0000                            
-t

AX=145A  BX=0000  CX=02A0  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0010   NV UP EI PL NZ NA PO NC 
1470:0010 B91500        MOV	CX,0015                            
-d ss:0 14f

144C:0000  31 39 37 35 31 39 37 36-31 39 37 37 31 39 37 38   1975197619771978
144C:0010  31 39 37 39 31 39 38 30-31 39 38 31 31 39 38 32   1979198019811982
144C:0020  31 39 38 33 31 39 38 34-31 39 38 35 31 39 38 36   1983198419851986
144C:0030  31 39 38 37 31 39 38 38-31 39 38 39 31 39 39 30   1987198819891990
144C:0040  31 39 39 31 31 39 39 32-31 39 39 33 31 39 39 34   1991199219931994
144C:0050  31 39 39 35 10 00 00 00-16 00 00 00 7E 01 00 00   1995........~...
144C:0060  4C 05 00 00 56 09 00 00-40 1F 00 00 80 3E 00 00   L...V...@....>..
144C:0070  A6 5F 00 00 91 C3 00 00-C7 7C 01 00 81 24 02 00   ._.......|...$..
144C:0080  8A 03 03 00 7C 47 05 00-EB 03 09 00 CA 42 0C 00   ....|G.......B..
144C:0090  18 0D 12 00 38 1F 1C 00-58 19 2A 00 28 44 39 00   ....8...X.*.(D9.
144C:00A0  28 F0 46 00 68 97 5A 00-03 00 07 00 09 00 0D 00   (.F.h.Z.........
144C:00B0  1C 00 26 00 82 00 DC 00-DC 01 0A 03 E9 03 A2 05   ..&.............
144C:00C0  D2 08 E9 0A C5 0F 03 16-22 20 16 2D 5E 38 99 3B   ........" .-^8.;
144C:00D0  88 45 00 00 00 00 00 00-00 00 00 00 00 00 00 00   .E..............
144C:00E0  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
144C:00F0  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
144C:0100  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
144C:0110  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
144C:0120  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
144C:0130  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
144C:0140  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
-d ds:0 14f

145A:0000  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0010  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0020  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0030  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0040  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0050  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0060  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0070  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0080  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0090  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:00A0  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:00B0  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:00C0  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:00D0  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:00E0  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:00F0  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0100  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0110  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0120  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0130  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
145A:0140  79 65 61 72 20 73 75 6D-6D 20 6E 65 20 3F 3F 20   year summ ne ?? 
-p

AX=145A  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0013   NV UP EI PL NZ NA PO NC 
1470:0013 BF0000        MOV	DI,0000                            
-p

AX=145A  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0016   NV UP EI PL NZ NA PO NC 
1470:0016 26            ES:	                                   
1470:0017 8B01          MOV	AX,[BX+DI]                         ES:0000=3931
-p

AX=3931  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0019   NV UP EI PL NZ NA PO NC 
1470:0019 8904          MOV	[SI],AX                            DS:0000=6579
-p

AX=3931  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=001B   NV UP EI PL NZ NA PO NC 
1470:001B 26            ES:	                                   
1470:001C 8B4102        MOV	AX,[BX+DI+02]                      ES:0002=3537
-p

AX=3537  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=001F   NV UP EI PL NZ NA PO NC 
1470:001F 894402        MOV	[SI+02],AX                         DS:0002=7261
-p

AX=3537  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0000  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0022   NV UP EI PL NZ NA PO NC 
1470:0022 83C754        ADD	DI,+54                             
-pp

  ^ Error
-p

AX=3537  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0054  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0025   NV UP EI PL NZ NA PO NC 
1470:0025 26            ES:	                                   
1470:0026 8B01          MOV	AX,[BX+DI]                         ES:0054=0010
-p

AX=0010  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0054  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0028   NV UP EI PL NZ NA PO NC 
1470:0028 894405        MOV	[SI+05],AX                         DS:0005=7573
-p

AX=0010  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0054  
DS=145A  ES=144C  SS=144C  CS=1470  IP=002B   NV UP EI PL NZ NA PO NC 
1470:002B 26            ES:	                                   
1470:002C 8B4102        MOV	AX,[BX+DI+02]                      ES:0056=0000
-p

AX=0000  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0054  
DS=145A  ES=144C  SS=144C  CS=1470  IP=002F   NV UP EI PL NZ NA PO NC 
1470:002F 894407        MOV	[SI+07],AX                         DS:0007=6D6D
-p

AX=0000  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0054  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0032   NV UP EI PL NZ NA PO NC 
1470:0032 83C754        ADD	DI,+54                             
-p

AX=0000  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0035   NV UP EI PL NZ NA PO NC 
1470:0035 8BC3          MOV	AX,BX                              
-p

AX=0000  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0037   NV UP EI PL NZ NA PO NC 
1470:0037 B302          MOV	BL,02                              
-p

AX=0000  BX=0002  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0039   NV UP EI PL NZ NA PO NC 
1470:0039 F6F3          DIV	BL                                 
-p

AX=0000  BX=0002  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=003B   NV UP EI PL NZ NA PO NC 
1470:003B 8BD8          MOV	BX,AX                              
-p

AX=0000  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=003D   NV UP EI PL NZ NA PO NC 
1470:003D 26            ES:	                                   
1470:003E 8B01          MOV	AX,[BX+DI]                         ES:00A8=0003
-p

AX=0003  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0040   NV UP EI PL NZ NA PO NC 
1470:0040 89440A        MOV	[SI+0A],AX                         DS:000A=656E
-p

AX=0003  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0043   NV UP EI PL NZ NA PO NC 
1470:0043 8B4405        MOV	AX,[SI+05]                         DS:0005=0010
-p

AX=0010  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0046   NV UP EI PL NZ NA PO NC 
1470:0046 8B5407        MOV	DX,[SI+07]                         DS:0007=0000
-p

AX=0010  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=00A8  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0049   NV UP EI PL NZ NA PO NC 
1470:0049 8B7C0A        MOV	DI,[SI+0A]                         DS:000A=0003
-p

AX=0010  BX=0000  CX=0015  DX=0000  SP=0000  BP=0000  SI=0000  DI=0003  
DS=145A  ES=144C  SS=144C  CS=1470  IP=004C   NV UP EI PL NZ NA PO NC 
1470:004C F7F7          DIV	DI                                 
-p

AX=0005  BX=0000  CX=0015  DX=0001  SP=0000  BP=0000  SI=0000  DI=0003  
DS=145A  ES=144C  SS=144C  CS=1470  IP=004E   NV UP EI PL NZ NA PO NC 
1470:004E 89440D        MOV	[SI+0D],AX                         DS:000D=3F3F
-p

AX=0005  BX=0000  CX=0015  DX=0001  SP=0000  BP=0000  SI=0000  DI=0003  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0051   NV UP EI PL NZ NA PO NC 
1470:0051 03DB          ADD	BX,BX                              
-p

AX=0005  BX=0000  CX=0015  DX=0001  SP=0000  BP=0000  SI=0000  DI=0003  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0053   NV UP EI PL ZR NA PE NC 
1470:0053 83C610        ADD	SI,+10                             
-p

AX=0005  BX=0000  CX=0015  DX=0001  SP=0000  BP=0000  SI=0010  DI=0003  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0056   NV UP EI PL NZ NA PO NC 
1470:0056 83C304        ADD	BX,+04                             
-p

AX=0005  BX=0004  CX=0015  DX=0001  SP=0000  BP=0000  SI=0010  DI=0003  
DS=145A  ES=144C  SS=144C  CS=1470  IP=0059   NV UP EI PL NZ NA PO NC 
1470:0059 E2B8          LOOP	0013                               
-p

AX=014D  BX=0054  CX=0000  DX=2580  SP=0000  BP=0000  SI=0150  DI=4588  
DS=145A  ES=144C  SS=144C  CS=1470  IP=005B   NV UP EI PL NZ NA PO NC 
1470:005B B8004C        MOV	AX,4C00                            
-d ds:0 14f

145A:0000  31 39 37 35 20 10 00 00-00 20 03 00 20 05 00 20   1975 .... .. .. 
145A:0010  31 39 37 36 20 16 00 00-00 20 07 00 20 03 00 20   1976 .... .. .. 
145A:0020  31 39 37 37 20 7E 01 00-00 20 09 00 20 2A 00 20   1977 ~... .. *. 
145A:0030  31 39 37 38 20 4C 05 00-00 20 0D 00 20 68 00 20   1978 L... .. h. 
145A:0040  31 39 37 39 20 56 09 00-00 20 1C 00 20 55 00 20   1979 V... .. U. 
145A:0050  31 39 38 30 20 40 1F 00-00 20 26 00 20 D2 00 20   1980 @... &. .. 
145A:0060  31 39 38 31 20 80 3E 00-00 20 82 00 20 7B 00 20   1981 .>.. .. {. 
145A:0070  31 39 38 32 20 A6 5F 00-00 20 DC 00 20 6F 00 20   1982 ._.. .. o. 
145A:0080  31 39 38 33 20 91 C3 00-00 20 DC 01 20 69 00 20   1983 .... .. i. 
145A:0090  31 39 38 34 20 C7 7C 01-00 20 0A 03 20 7D 00 20   1984 .|.. .. }. 
145A:00A0  31 39 38 35 20 81 24 02-00 20 E9 03 20 8C 00 20   1985 .$.. .. .. 
145A:00B0  31 39 38 36 20 8A 03 03-00 20 A2 05 20 88 00 20   1986 .... .. .. 
145A:00C0  31 39 38 37 20 7C 47 05-00 20 D2 08 20 99 00 20   1987 |G.. .. .. 
145A:00D0  31 39 38 38 20 EB 03 09-00 20 E9 0A 20 D3 00 20   1988 .... .. .. 
145A:00E0  31 39 38 39 20 CA 42 0C-00 20 C5 0F 20 C7 00 20   1989 .B.. .. .. 
145A:00F0  31 39 39 30 20 18 0D 12-00 20 03 16 20 D1 00 20   1990 .... .. .. 
145A:0100  31 39 39 31 20 38 1F 1C-00 20 22 20 20 E0 00 20   1991 8... "  .. 
145A:0110  31 39 39 32 20 58 19 2A-00 20 16 2D 20 EF 00 20   1992 X.*. .- .. 
145A:0120  31 39 39 33 20 28 44 39-00 20 5E 38 20 04 01 20   1993 (D9. ^8 .. 
145A:0130  31 39 39 34 20 28 F0 46-00 20 99 3B 20 30 01 20   1994 (.F. .; 0. 
145A:0140  31 39 39 35 20 68 97 5A-00 20 88 45 20 4D 01 20   1995 h.Z. .E M. 
-p

AX=4C00  BX=0054  CX=0000  DX=2580  SP=0000  BP=0000  SI=0150  DI=4588  
DS=145A  ES=144C  SS=144C  CS=1470  IP=005E   NV UP EI PL NZ NA PO NC 
1470:005E CD21          INT	21                                 
-p

Program terminated normally
-p
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