> Hi my problem is all im new in asm,
That's a problem??? Learnin' stuff is fun! And you've got a *load* of fun ahead of you! :)
> and i dont know how to star the NASM.
> I decompress the file, i ty to star the program from cmd but i new some parameters
> for start but all ill try is useless.
Getting started is the hardest part. (next to getting good at it :)
> I need more thing than the asm.exe and
> the ndiasm.exe like librery or other aplication i dont know nothing about all
The only parameter Nasm *always* requires is a file to assemble. S'pose we've got one:
org 100h
mov ah, 9
mov dx, msg
int 21h
exit:
mov ah, 4Ch
int 21h
msg db "It worked!!!$"
S'pose we've got that saved as "myfile.asm". Doing just "nasm (or nasmw) myfile.asm" should result in a "flat binary" (Nasm's default output format) file named "myfile". Even under Windows (except 64-bit Vista, I guess) that little flat binary file will run as a dos .com file - but it needs to be *named* .com! (or ".exe" would work, actually). "ren myfile myfile.com" would do it, but if we'd typed "nasm myfile.asm -o myfile.com", Nasm would take care of that for us - lower case "-o" names the output file (upper case "-O" turns on optimization - don't worry about that one yet). Besides "-f bin" (Nasm's default), the other output formats usually default to a sensible name, so this may be the only time you'll need to use "-o".
Using dos .com files isn't a bad way to learn some fundamental assembly, IMHO, but you'll probably want to move on to "real Windows programs" soon. For that, you'll probably need a linker (and perhaps a "resource compiler", after a while). It is possible to write a "real Windows" (or Linux) file using Nasm's "-f bin" mode - no linker required! - but you probably want to learn to use a linker (more flexible). For this, you'll need to specify an output format - "-f obj" or "-f win32". Which one is correct depends on which linker you've got.
Have you got a linker you use with a C compiler? Nasm will probably output something compatible with that - "-f obj" for Borland, "-f win32" for almost anything else. Anthony Williams has written a linker to "go with" Nasm -
http://alink.sf.net You'll probably also want a library, or at least an .inc file with the "system equates" for Windows. Easiest way is probably to download a "package", such as:
http://www.asmcommunity.net/projects/nasm32/Or, older but with tons of examples, NaGoA (includes an IDE, if you want one):
http://www.visual-assembler.pt.vu/How do you feel about Yahoo? (when I was a boy, calling someone a "yahoo" was not a compliment!) There are examples (and some files you might want) in the "files" section of the Yahoo group:
http://tech.groups.yahoo.com/group/win32-nasm-users/Included are not one, but two translations of the Iczelion tutorials, which might not be a bad place to start.
Another tutorial for Nasm, but not specific to Windows:
http://www.drpaulcarter.com/pcasm/This'll be easier if you've already got a C compiler installed - depends on C so it can be used on any OS.
That should keep you occupied for a while - and probably raise many questions. Bring 'em on!
Best,
Frank
