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Hello,

Amateur programmer starting to work with assembly language, here, and I'm having a bit of a problem.

Whenever I try to create an object file in nasm, I get the error that it was unable to open the input file. However, just a few minutes ago I was up and running without a hitch. I have no idea what happened.

After searching around, I came across this thread: http://forum.osdev.org/viewtopic.php?f= ... open+input

This leads me to believe that notepad is formatting the file in some strange way or something, I just have no idea how to fix it.

I'd really appreciate any help I can get, as this is quite frustrating

Thanks!

Hello Inflater,

Do you know where the power button is? I have the idea it might help you (hint)

Thanks for the quick response, but I'm afraid restarting didn't help.

Here's a bit more info if it helps:

When I run nasm16.exe, I get the response that it doesn't have an input file. Okay, that's good.

Then, I try: nasm16 -f obj hello.asm -o hello.obj

And get: nasm: unable to open file 'hello.nasm'.

I'm currently looking for an editor other than notepad, so hopefully that'll help.

EDIT: Same problem with another editor. Arghh.

Holy **** I got it working.

I'm not exactly sure what was wrong. After changing the directories around, I was getting a new error saying label or instruction expected at the start of the line.'

Turns out there was a space before the [BITS 16] instruction, and after deleting that, viola.

Thanks for responding, and hopefully this will help somebody in the future (though I kinda doubt it :p)

You could post this as a bug on the nasm site, as this may be an error handling bug.

First try the latest nasm build to see if it does the same.

did u checked the file extension.
sometimes notepad saves a file named as example.asm.txt instead of example.asm.

Seeing that you're using Windows, you might consider Programmer's Notepad 2. It has syntax highlighting for x86 ASM (among many others), and can run NASM (or my preferred assembler, YASM) if you set it up to. Also, it lets you choose the extension rather than just adding .txt.