Asm Divide Error Overflow
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Divide Overflow Error In Assembly Language
posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss divide error overflow emu8086 Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes divide by zero or overflow error a minute: Sign up error like this divide error - overflow. to manually process this error, change address of INT 0 in interrupt vector table up vote 2 down vote favorite .model small .stack 100h .data number dw '12345' result
Division Overflow Error
db 15 dup('$') .code main proc mov ax,@data mov ds,ax mov ax,number mov bx,offset result mov cx,0 l1: mov dx,0 div cx add dx,48 push dx inc cx cmp ax,0 jne l1 l2: pop dx mov [bx],dl inc bx loop l2 mov ah,9 mov dx,offset result int 21h mov ax,4c00h int 21h main endp end main assembly x86 ms-dos share|improve this question edited Aug 29 '14 at 6:12 Ross Ridge 17.7k22050 asked Aug 29 '14 at 6:07 Mohammad Sadiq 142
Spinrite Division Overflow Error
Why are there single quotes around 12345? –Michael Aug 29 '14 at 6:12 You should put a question in your post. What are you trying to do? What have you tried so far? What went wrong? –Ross Ridge Aug 29 '14 at 6:14 Please comment your code –User.1 Aug 29 '14 at 8:02 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote I assume you are using EMU8086. The error happens at div cx. This instruction means: AX = DX:AX / CX. If CX is zero, you get a "divide by zero error" - in EMU8086-syntax: "divide error - overflow.". You have at least to take care that CX won't become zero. share|improve this answer answered Aug 29 '14 at 8:33 rkhb 7,55271628 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged assembly x86 ms-dos or ask your own question. asked 2 years ago viewed 1023 times active 2 years ago Related 1assembly x86 Using stack's value as pointer?08086 ASM: Turbodebugger opens text file, executing normally doesn't0Sorting strings in 8086 Assembly2Using Jump and Compare in Assemb
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Div Instruction In 8086
Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges divide overflow Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: http://stackoverflow.com/questions/25562535/error-like-this-divide-error-overflow-to-manually-process-this-error-change Sign up Divide overflow error assembly emu8086 up vote 0 down vote favorite I have a homework on this, the purpose of the homework is to calculate in assembly (emu8086) this f(x)=x^2+2x-3. The problem is when I divide the result in order to print it I get a divide overflow error and I don't know why or how to fix it. Can http://stackoverflow.com/questions/19544894/divide-overflow-error-assembly-emu8086 anyone help? TITLE MYPROGRAM DEDOMENA SEGMENT protropimsg db "Dwsse arithmo x:",10,13,"$" apotelesmamsg db 10,13,"to apotelesma einai",10,13,"$" x_number db 0 tmp1 db 0 f_result dw 0 dekada db 0 monada db 0 DEDOMENA ENDS KODIKAS SEGMENT ARXH:MOV AX,DEDOMENA MOV DS,AX LEA DX,protropimsg MOV AH,09 INT 21h MOV AH,01h INT 21h SUB AH,30h MOV x_number,AH MOV AH,x_number MOV BH,x_number ADD AH,BH MOV CH,3 SUB AH,CH MOV tmp1,AH MOV AL,x_number MOV DL,x_number MUL DL MOV BL,tmp1 MOV BH,0 ADD AX,BX MOV f_result,AX MOV AX,f_result MOV BL,10 DIV BL MOV dekada,AL MOV monada,AH LEA DX,apotelesmamsg MOV AH,09 INT 21h MOV DL,dekada ADD DL,30h MOV AH,02h INT 21h MOV DL,monada ADD DL,30h MOV AH,02h INT 21h MOV AH,4CH INT 21H KODIKAS ENDS END ARXH assembly x86 overflow divide share|improve this question edited Oct 23 '13 at 21:03 nrz 7,71221453 asked Oct 23 '13 at 14:43 Constantinos Ch 105 What value are you using for x when testing? The division overflow is something you'd get if AX/BL is >255, i.e. if f_result >= 2560. –Michael Oct 23 '13 at 14:50 the value of x is given by
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us http://stackoverflow.com/questions/12149560/8086-assembly-divide-overflow Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up 8086 assembly http://www.tek-tips.com/viewthread.cfm?qid=1123341 - divide overflow up vote 0 down vote favorite 1 I try to make a simple division in assembly but I get "Divide overflow" error. My simple code: cs:sum and cs:num is a byte variable. (db) mov ax, word ptr cs:sum mov overflow error cl, 10 xor dx,dx div cl ; divide by 10 mov cs:num, ah ; ger rightest Not sure why - but as I say - I fail to devide properly. So do you know what is that problem and how to solve it? thanks ! (I'm using cs deference because that's a TSR program) assembly x86 8086 share|improve this question asked Aug 27 '12 at 21:02 iLoveC 37411 4 A TSR ? Are you working on something for a museum exhibit ? –Paul R Aug divide error overflow 27 '12 at 21:06 1 I'm not using assembly at all. I'm preparing to exam..=\ –iLoveC Aug 27 '12 at 21:17 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote accepted For this to cause a division exception mov ax, word ptr cs:sum mov cl, 10 div cl the value in ax (coming from word ptr cs:sum) must be >= 2560. Either word ptr cs:sum isn't < 2560 or addressing is broken in your code and you're not storing the value in word ptr cs:sum or fetching it from there (e.g. you're not using the same segment value when referring to sum). Those are the only possibilities. share|improve this answer answered Aug 28 '12 at 10:59 Alexey Frunze 45k83787 I already solve it. because your answer is the best - I'll sing this answer as accepted. thank you. BTW - C FTW!! –iLoveC Aug 29 '12 at 9:33 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged assembly x86 8086 or ask your own question. asked 4 years ago viewed 2640 times active 4 years ago Linked 2 Division of high numbers in assembly Related 08086 ASM: Turbodebugger o
Join INTELLIGENT WORK FORUMSFOR COMPUTER PROFESSIONALS Log In Come Join Us! Are you aComputer / IT professional?Join Tek-Tips Forums! Talk With Other Members Be Notified Of ResponsesTo Your Posts Keyword Search One-Click Access To YourFavorite Forums Automated SignaturesOn Your Posts Best Of All, It's Free! Join Us! *Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.Tek-Tips Posting Policies Jobs Jobs from Indeed What: Where: jobs by Link To This Forum! Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.Just copy and paste the BBCode HTML Markdown MediaWiki reStructuredText code below into your site. Assembly Forum at Tek-Tips HomeForumsProgrammersLanguagesAssembly Forum predicting a divide overflow. 2 thread272-1123341 Forum Search FAQs Links MVPs predicting a divide overflow. predicting a divide overflow. denc4 (Programmer) (OP) 15 Sep 05 18:09 let's say you got this code:; 20002h \ 2.mov ax,2mov dx,axmov bx,axdiv bxresult would be 10001h, which ofcourse does not fit in ax:a divide overflow error is generated.Is it possible to predict a divide overflow before itoccurs? RE: predicting a divide overflow. 2 TessaBonting (TechnicalUser) 22 Sep 05 03:48 Yes, do a compare on dx with bx and if ae then its anoverflow.movax,2movdx,axmovbx,2cmpdx,bxjaeerrordivbxok:error:succes, Tessa RE: predicting a divide overflow. denc4 (Programmer) (OP) 22 Sep 05 12:16 That makes sense.I'm not a math person myself, so I am strugling with thelogic behind it. But I have executed some experimental codebased on your example and it seems to work fine.thank you. RE: predicting a divide overflow. TessaBonting (TechnicalUser) 23 Sep 05 11:34 Look it like this:100.000/10 gives 10.000 if you now look at the three zeros afther the dot then that is the ax registerand the 100 is the dx register.by dividing you see that afther the division ax can't hold the whole 10.000.so when you divide the 100.000 by 200 it gives .500 and that can be holded in ax.try it with dividing by 100 and the result will be 1.000with is just 1 to much to hold since the maximum in thisexxample is 999I hope this explaince the arithmetic behind it a bit.succes, Tessa RE: predicting a divide overflow. denc4 (Programmer) (OP) 25 Sep 05 15:16 it's a bit clearer now, I coul