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but it's not working!!!!
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Matrix 17 Oct 2004, 02:39
Hello b
i'd suggest you learning the cpu operations, then look at a few examples like keyboard reading and writing hex value to screen http://board.flatassembler.net/topic.php?t=2438 variable using and writing to screen http://board.flatassembler.net/topic.php?t=2399 i don't have to say you move a variable to a register like Code: mov ax,word [testvar] and register into variable Code: mov word [testvar],ax and variable offset into register Code:
mov ax,testvar
of course you initialize variables like: Code: testvar dw 0 ; declares 2 bytes in com file testvar rw 1 ; reserves 1 words in com file testvar rb 2 ; reserves 2 bytes in com file ; reserved variables won't be in com file unless they're not at the end exit to dos: Code: int 20h ;or mov ax,4c00 int 21h ;or ret |
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17 Oct 2004, 02:39 |
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b 17 Oct 2004, 07:06
thx sir for ur help, but i'm so new inthis , and i have only learnt the directive db, dw ...etc
this r directive i didnt recognize!!!! i made this code Code:
int 21h
mov ah,1
int 21h
i think this takes the value & then i dealed with the value through the al register, it's like: Code:
sub al,30h
mov bl,al
is it right sofar!! and sir i have another question if i wanna take another value how am i allowed to retype this code!!1 Code:
int 21h
mov ah,1
int 21h
and deal with al another time???? thx 4 help and sorry if i'm bothering |
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17 Oct 2004, 07:06 |
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Matrix 17 Oct 2004, 08:14
HY
you can call me Z, well, what do you wanna do? exactly that int 21h is a dos interrupt you are calling and you should pass the paramerers for the dos function call when you 're calling it, refer to Ralph Brown's interrupt list. you call interrupts with subfunctions for example: Code: mov ax,$13 int 10h now this sets video mode 320x200x256 color via bios function call and the parameter is $13 in ax, it depends on what interrupt are you calling Code: mov ax,$3 int 10h this sets 80x25 text mode back better do this before you exit you will see many codes using int funtions if you look around a little. you can try searching forums too. |
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17 Oct 2004, 08:14 |
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b 17 Oct 2004, 15:57
hi & thx Z
all what i wanna do is to make a decimal adder, its the first time for me to assemble, it's my first code and i have troubles in the run time. he gave me an error which i dont understand and when i ignore it, it gives me this state " divide over flow" mostly i dont know how to deal with the value entered by the user by keyboard. our instructor told me that it's stored in the al register. but it's not working!!! this my code Code: dosseg .model small .data msg1 db ' give a decimal number1:',13,10,'$' msg2 db ' give a decimal number2:',13,10,'$' .code mov ax,@data mov ds,ax mov dx,offset msg1 mov ah,9 int 21h mov ah,1 int 21h sub al,30h; this for taking the value from the asci code. mov bl,al mov dx, offset msg2 mov ah,9 int 21h mov ah,1 int 21h sub al,30h add al,bl mov ah,2 int 21h mov ah,4ch end it's supposed to add 2 numbers but it's not working!!! when i tasm it its ok but in the runtime it's not!!! sorry for make it long but i dont know what to do thx 4 ur time sir |
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17 Oct 2004, 15:57 |
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Matrix 17 Oct 2004, 20:09
Hy b
well that was tasm source you wanted to compile, in Flaat assembly a code looks like this: this is a simple com file Code: org 100h ; this is for offset calculations we wanna create a comfile mov dx,msg ; offset message in dx mov ah,9 ; 9 in ah int 21h ; dos function ah=9 dx= string offset int 20h ; exit ;variables: msg db 'hello$' ; $ is the string terminator wordvar dw 0 ; this is a word variable value = 0 wordvar rw 1 ; this is a word variable reserved at the end and it is a good idea to first write down somewhere what do you wanna do if you're starting programming, then it might be easier to translate the algorithm in asm. i saw you are not using conditional jumjs, refer to fasm tutorial Code: cmp ax,3 ; - compare and set the flags jb xlabel ; jump if ax below 3 to xlabel xor al,al xlabel: jc ja jb jz are the most commonly used ps.: on this board look you can make code sniplets more readable if you use the code /code directive refer to the below thread http://board.flatassembler.net/topic.php?t=2444 |
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17 Oct 2004, 20:09 |
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b 17 Oct 2004, 22:46
aha, sorry sir for bothering i didnt know it's differnet and thx 4 ur advice.
by the way i didi what u said but it's not easy also:) , looks like i dont belong here. anyway thx again and very much . bodour |
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17 Oct 2004, 22:46 |
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vid 18 Oct 2004, 11:21
check my tutorial, possibly at decard's site.
It is very incomplete, but there is some useful info. btw. i will upload new chapter soon, so check it in few weeks again. |
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18 Oct 2004, 11:21 |
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b 18 Oct 2004, 23:10
thx vid,
i checked ur site, it's also using fasm!!!! i wonder is it close ro tasm?!! or it very different !!! see i'm a student and i wanna develope my abilities in programming in assembly, but i am related to our insructor!!! is it ok to deal with this FASM!!!! or i should stick to what my insructor says!!! and i'll be checking ur site, really thx this site is very help full. bodour p.s i found also this one helpfull!!! http://www.geocities.com/plasma_os/downtutors/asmlang1.html do u know it!!! |
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18 Oct 2004, 23:10 |
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Matrix 19 Oct 2004, 11:52
In my opinion Tasm has gone with the wind,
its very old. However i use Tasm for Atmel microcontrollers Assembly languages are nearly the same in that aspect, they're interpreting your code and converting it to binary executable format. assembly nstructions are a standard like stosb = mov byte [es:dig,al inc di |
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19 Oct 2004, 11:52 |
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b 19 Oct 2004, 18:52
i know sir but i'm taking a course in assembly in the university as a major one so i have to follow our teacher, and i guess it's the only assembler they know!!! lol
u know he also wants us to make projects using this TASM. can u sir offer me some help determining the idea!! he asked for calculators !!!! but i couldent make the code for adding how about multiplycation!!!! a student did it it took 3 pages!!! i 'm not good in low level programming!! it was easier to deal with java!!! |
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19 Oct 2004, 18:52 |
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b 19 Oct 2004, 20:27
thx alot sir
u r the best!!! but i guess it's alittele difficult for me to deal with!!! i know i'm annoying you!!! now this i should write in tasm code!!! that what u mean!!! then i'll ask u for another help!!! where to find theses equal intructions in tasm!!! cause i dont know much in tasm!!!!  or how to convert it!!!
and do u think he'll beleive that it is my work!!!  
i really approciate ur help!!! very much!! i tried to tasm it lol but it gave me many errors lol |
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19 Oct 2004, 20:27 |
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wanderer 20 Oct 2004, 12:20
Matrix wrote: Here's a calculator i found somewhere Probably on this board as I posted it here. Matrix wrote: it uses FPU, and its nice Thank you, Matrix. However it contained some really bad bugs in it. I corrected what I found (unfortunately I did't have time to test better - I'm on my job now), so if you find some more just let me know. Sorry, there's no way right now to make it work with e+-n, I'll add it this evening. [EDIT] attachment removed as there's newer version - see below [/EDIT] _________________ Best regards, Antoch Victor Last edited by wanderer on 21 Oct 2004, 19:14; edited 1 time in total |
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20 Oct 2004, 12:20 |
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Matrix 20 Oct 2004, 17:16
If i make a better one i'll post it to you,
i'm having some work right now i guess my post is not needed anymore, so its removed |
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20 Oct 2004, 17:16 |
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wanderer 20 Oct 2004, 21:24
Matrix wrote: If i make a better one i'll post it to you, Sorry, I didn't mean to offend you. However, taking into consideration that I'm the author of this program, it's me who should be ashamed  . When I posted it I didn't think that it'll go so far , as I remember it was just an example. So right now I just want to remove bugs from it, so it would be completed program._________________ Best regards, Antoch Victor |
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20 Oct 2004, 21:24 |
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Matrix 21 Oct 2004, 08:35
Hy
There whould be no problem if you include your name and ehatever data about you in the archive i didn't changed anything. It was a little time ago since i have downloaded, so now i know it was yours. I can even help you remmoving those bugs if you'd like. |
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21 Oct 2004, 08:35 |
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wanderer 21 Oct 2004, 16:16
Matrix wrote: Hy Done. Matrix wrote: It was a little time ago since i have downloaded, so now i know it was yours. Thank you again. Right now I removed all bugs that I found myself, but if you find some more you can either let me know about them, or correct yourself, as you wish. An updated version is in the attachment.
_________________ Best regards, Antoch Victor Last edited by wanderer on 21 Oct 2004, 19:12; edited 1 time in total |
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21 Oct 2004, 16:16 |
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wanderer 21 Oct 2004, 16:19
b wrote: but i guess it's alittele difficult for me to deal with!!! i know i'm annoying you!!! now this i should write in tasm code!!! that what u mean!!! then i'll ask u for another help!!! where to find theses equal intructions in tasm!!! cause i dont know much in tasm!!!! Try to replace these lines: Code: org 100h
use16 with Code: .model tiny
.code
.286
org 100h Can't check if this is enough as I don't have tasm. _________________ Best regards, Antoch Victor |
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21 Oct 2004, 16:19 |
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Matrix 21 Oct 2004, 22:02
Hello b
there is no use of your post that way, so i have removed it if you don't mind. if you have a problem with a source you should post the source, anyway you shouldn't post text as picture, it can be copied after selecting as text. this is Flat assembly message board, if you have problems writing tasm codes, i'd recommend you this message board: http://www.win32asmcommunity.net/phpBB2/index.php?sid=62da0062bfde2f89b857bdc1535e917a |
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21 Oct 2004, 22:02 |
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b 22 Oct 2004, 13:25
it's ok sir
and sorry but i wanted to show the errors!! sorry again |
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22 Oct 2004, 13:25 |
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