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主题 : : 实验七,刚做的,提示除法溢出,高手请来帮忙看看 [已解决] |
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[ 发表时间:2009-07-25 19:35 ]
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被此题折魔了3天,陆续想了近一天,上机写完发现死活不能调试成功,换个角度换个方法再写一上午,调试了一下午,憋出以下程序,结果找到病源:提示除法溢出.晕倒~~~不会整了
assume cs:codesg,ds:data,es:table
data 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 11452,14430,15257,17800
data ends
table segment
db 21 dup ('year summ ne ?? ')
table ends
codesg segment
start: mov ax,data
mov ds,ax
mov bx,0
mov ax,table
mov es,ax
mov cx,21
mov si,0
mov di,0
s0: mov si,cx
s: mov ax,[bx]
mov es:[di],ax
mov ax,[bx+84]
mov es:[di+5],ax
add bx,4
add di,16
loop s
mov bx,2
mov di,2
mov cx,si
loop s0
mov bx,0
mov di,0
mov cx,21
s2: mov si,cx
s1: mov ax,[bx+168]
mov es:[di+0ah],ax
mov ax,es:[di+5]
mov dx,es:[di+7]
div word ptr es:[di+0ah]
mov es:[di+0dh],ax
loop s1
add bx,2
add di,16
mov cx,si
loop s2
mov ax,4c00h
int 21h
codesg ends
用debug调试,提示除法溢出,不会整来,5555555~
Microsoft(R) Windows DOS
(C)Copyright Microsoft Corp 1990-2001.
C:\DOCUME~1\ADMINI~1>debug sy7-4.exe
-r
AX=0000 BX=0000 CX=029A DX=0000 SP=0000 BP=0000 SI=0000 DI=0000
DS=0C69 ES=0C69 SS=0C79 CS=0C9C IP=0000 NV UP EI PL NZ NA PO NC
0C9C:0000 B8790C MOV AX,0C79
-g
Divide overflow
Program terminated normally
-d 0c79:0
0C79:0000 31 39 37 35 31 39 37 36-31 39 37 37 31 39 37 38 1975197619771978
0C79:0010 31 39 37 39 31 39 38 30-31 39 38 31 31 39 38 32 1979198019811982
0C79:0020 31 39 38 33 31 39 38 34-31 39 38 35 31 39 38 36 1983198419851986
0C79:0030 31 39 38 37 31 39 38 38-31 39 38 39 31 39 39 30 1987198819891990
0C79:0040 31 39 39 31 31 39 39 32-31 39 39 33 31 39 39 34 1991199219931994
0C79:0050 31 39 39 35 10 00 00 00-16 00 00 00 7E 01 00 00 1995........~...
0C79:0060 4C 05 00 00 56 09 00 00-40 1F 00 00 80 3E 00 00 L...V...@....>..
0C79:0070 A6 5F 00 00 91 C3 00 00-C7 7C 01 00 81 24 02 00 ._.......|...$..
-d
0C79:0080 8A 03 03 00 7C 47 05 00-EB 03 09 00 CA 42 0C 00 ....|G.......B..
0C79:0090 18 0D 12 00 38 1F 1C 00-58 19 2A 00 28 44 39 00 ....8...X.*.(D9.
0C79:00A0 28 F0 46 00 68 97 5A 00-03 00 07 00 09 00 0D 00 (.F.h.Z.........
0C79:00B0 1C 00 26 00 82 00 DC 00-DC 01 0A 03 E9 03 A2 05 ..&.............
0C79:00C0 D2 08 E9 0A C5 0F 03 16-22 20 BC 2C 5E 38 99 3B ........" .,^8.;
0C79:00D0 88 45 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .E..............
0C79:00E0 31 39 37 35 20 10 00 00-00 20 03 00 20 05 00 20 1975 .... .. ..
0C79:00F0 31 39 37 36 20 16 00 00-00 20 07 00 20 03 00 20 1976 .... .. ..
-d
0C79:0100 31 39 37 37 20 7E 01 00-00 20 09 00 20 2A 00 20 1977 ~... .. *.
0C79:0110 31 39 37 38 20 4C 05 00-00 20 0D 00 20 68 00 20 1978 L... .. h.
0C79:0120 31 39 37 39 20 56 09 00-00 20 1C 00 20 55 00 20 1979 V... .. U.
0C79:0130 31 39 38 30 20 40 1F 00-00 20 26 00 20 D2 00 20 1980 @... &. ..
0C79:0140 31 39 38 31 20 80 3E 00-00 20 82 00 20 7B 00 20 1981 .>.. .. {.
0C79:0150 31 39 38 32 20 A6 5F 00-00 20 DC 00 20 6F 00 20 1982 ._.. .. o.
0C79:0160 31 39 38 33 20 91 C3 00-00 20 DC 01 20 69 00 20 1983 .... .. i.
0C79:0170 31 39 38 34 20 C7 7C 01-00 20 0A 03 20 7D 00 20 1984 .|.. .. }.
-d
0C79:0180 31 39 38 35 20 81 24 02-00 20 E9 03 20 8C 00 20 1985 .$.. .. ..
0C79:0190 31 39 38 36 20 8A 03 03-00 20 A2 05 20 88 00 20 1986 .... .. ..
0C79:01A0 31 39 38 37 20 7C 47 05-00 20 D2 08 20 99 00 20 1987 |G.. .. ..
0C79:01B0 31 39 38 38 20 EB 03 09-00 20 E9 0A 20 D3 00 20 1988 .... .. ..
0C79:01C0 31 39 38 39 20 CA 42 0C-00 20 C5 0F 20 C7 00 20 1989 .B.. .. ..
0C79:01D0 31 39 39 30 20 18 0D 12-00 20 03 16 20 D1 00 20 1990 .... .. ..
0C79:01E0 31 39 39 31 20 38 1F 1C-00 20 22 20 20 E0 00 20 1991 8... " ..
0C79:01F0 31 39 39 32 20 58 19 2A-00 20 BC 2C 20 F0 00 20 1992 X.*. ., ..
-d
0C79:0200 31 39 39 33 20 28 44 39-00 20 5E 38 20 04 01 20 1993 (D9. ^8 ..
0C79:0210 31 39 39 34 20 28 F0 46-00 20 99 3B 20 30 01 20 1994 (.F. .; 0.
0C79:0220 31 39 61 72 20 68 97 6D-6D 20 88 45 20 3F 3F 20 19ar h.mm .E ??
0C79:0230 B8 79 0C 8E D8 BB 00 00-B8 87 0C 8E C0 B9 15 00 .y..............
0C79:0240 BE 00 00 BF 00 00 8B F1-8B 07 26 89 05 8B 47 54 ..........&...GT
0C79:0250 26 89 45 05 83 C3 04 83-C7 10 E2 EC BB 02 00 BF &.E.............
0C79:0260 02 00 8B CE E2 E0 BB 00-00 BF 00 00 B9 15 00 8B ................
0C79:0270 F1 8B 87 A8 00 26 89 45-0A 26 8B 45 05 26 8B 55 .....&.E.&.E.&.U
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[ 回复时间:2009-07-25 19:43 ]
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太乱了,没耐心看,你确定是除法溢出?是不是提示diviXXX overflow? | | |
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[第2楼]
[ 回复时间:2009-07-25 19:47 ]
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用debug跟踪,又仔细看了看题,发现最后3个数据相除后>256,是无法存放在2个字节里的,那应该怎么改,改成什么样的呢??疑问,大疑问…… | | |
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[第3楼]
[ 回复时间:2009-07-25 20:17 ]
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注册日期:2009-05-25 11:39 |
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[第4楼]
[ 回复时间:2009-07-26 02:34 ]
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换了个做法,已搞定
assume cs:code,ds:data,es:table
data 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
data ends
table segment
db 21 dup ('year summ ne ?? ')
table ends
code segment
start: mov ax,data
mov ds,ax
mov ax,table
mov es,ax
mov bx,0
mov si,0
mov di,0
mov cx,21
s: mov ax,[bx]
mov es:[si],ax
mov ax,[bx].2
mov es:[si].2,ax
mov ax,[bx].84
mov es:[si].5,ax
mov dx,[bx].86
mov es:[si].7,dx
div word ptr ds:[di].168
mov es:[si].13,ax
mov ax,[di].168
mov es:[si].10,ax
add di,2
add bx,4
add si,16
loop s
mov ax,4c00h
int 21h
code ends
end start | | |
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[ 回复时间:2009-07-26 02:35 ]
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[ 回复时间:2009-07-26 14:53 ]
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第一个程序已改好,哈哈,搞定喽
assume cs:codesg,ds:data,es:table
data 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 11452,14430,15257,17800
data ends
table segment
db 21 dup ('year summ ne ?? ')
table ends
codesg segment
start: mov ax,data
mov ds,ax
mov bx,0
mov ax,table
mov es,ax
mov cx,21
mov si,0
mov di,0
s0: mov si,cx
mov cx,21
s: mov ax,[bx]
mov es:[di],ax
mov ax,[bx].84
mov es:[di].5,ax
add bx,4
add di,16
loop s
mov bx,2
mov di,2
mov cx,si
loop s0
mov bx,0
mov di,0
mov cx,21
s2: mov si,cx
s1: mov ax,[bx+168]
mov es:[di+0ah],ax
mov ax,es:[di+5]
mov dx,es:[di+7]
div word ptr es:[di+0ah]
mov es:[di+0dh],ax
loop s1
add bx,2
add di,16
mov cx,si
loop s2
mov ax,4c00h
int 21h
codesg ends
end start | | |
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[第7楼]
[ 回复时间:2009-07-26 15:11 ]
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此贴由 贴主 于 [ 2009-07-26 15:11 ] 结贴。 结贴原因:问题已解决 | | |
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