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This is what happens when I want to do anything GUI related.

octacone wrote:This is what happens when I want to do anything GUI related.

Read a bit more of your books and the wiki and you should be able to get it working.

NunoLava1998 wrote:

octacone wrote:This is what happens when I want to do anything GUI related.

Read a bit more of your books and the wiki and you should be able to get it working.

alexfru wrote: Perhaps, you should follow your own advice?:

NunoLava1998 wrote: Read a bit more of your books and the wiki and you should be able to get it working.

I think it's fair to say I have issues with kernel multi-tasking. Specifically, garbage code execution. Hmmm.

zesterer wrote:I think it's fair to say I have issues with kernel multi-tasking. Specifically, garbage code execution. Hmmm.

Screenshot_2017-01-16_19-31-14.png

Ahh, my old nemesis.... Three lines and an "S".

You probably already know this, but just in case you don't, that's what you get when you dump a null pointer to the screen as ASCII. So I'm going to guess that you're passing a null to your PrintString function...

SpyderTL wrote:

zesterer wrote:I think it's fair to say I have issues with kernel multi-tasking. Specifically, garbage code execution. Hmmm.

Screenshot_2017-01-16_19-31-14.png

Ahh, my old nemesis.... Three lines and an "S".

You probably already know this, but just in case you don't, that's what you get when you dump a null pointer to the screen as ASCII. So I'm going to guess that you're passing a null to your PrintString function...

Oh really? Interesting. I have no idea what causes it. After that screenshot, the kernel crashes with an invalid instruction.

octacone wrote:This is what happens when I want to do anything GUI related.

This is why I wrote about Surface. You can easily make a GUI with it

I want to see this "Surface"! Sounds interesting.

Nevermind! I found it on gitlab.

Multitasking screwed something up

zesterer wrote:I think it's fair to say I have issues with kernel multi-tasking. Specifically, garbage code execution. Hmmm.

Garbage code execution? Is that a thing?

onlyonemac wrote:

zesterer wrote:I think it's fair to say I have issues with kernel multi-tasking. Specifically, garbage code execution. Hmmm.

Garbage code execution? Is that a thing?

Yep, otherwise colloquially known as "jumping to hyperspace" at times. It's less likely to happen if you're writing a 64-bit or 32-bit-plus-PAE OS (the NX bit covers most situations, as pretty much nobody here is producing something that has enough of a user base to make it worthwhile for attacks to require an ASLR implementation as well), but that's not going to prevent you from accidentally jumping to existing code at an inopportune time.

Giving VBE graphics a go. I'm writing a PSF font to the screen, but something's up with my alpha blending

zesterer wrote: I'm writing a PSF font to the screen, but something's up with my alpha blending

Looks very Hotline Miami-sh!

I was working on getting my VGA logging to scroll faster (By finally using a backbuffer...).

I guess I have my offsets wrong somewhere...

PS: This is actually the weirdest of rendering artifacts I have yet encountered on my os. Never had those flashy full screen corruptions...