I just wrote a pretty basic bootloader in assembly, and am now trying to write a kernel. This is what I have so far. extern "C" void main() { int a ...
I am trying to make a function that would write strings to video memory with a specific color. However, I am unable to make it work. To write single c ...
I made driver that should to work with vmem, but it doesn't work. I think mistake is registers that I uses to direct to the memory. there is code of ...
I am writing an OS in fasm assembly and I faced with problem. I was trying to draw font pixel-by-pixel, but it is too hard and strange. I want to make ...
I am new in assembly and I had my first lesson few days ago. I got an assignment to add my name to a program that prints "Hello,world!" and I successf ...
I'm trying to read the value 1000h which can be found in the address 0000h:044Ch and put it in the ax register by using the mov instruction. Every tim ...
In x86 asm, what is the right, fast way to copy from VRAM to an array variable in VGA mode 13? I can copy to VRAM no issue using movsb, but copying fr ...
If the (discrete) GPU has its own video RAM, I have to copy my data from RAM to VRAM to be able to use them. But if the GPU is integrated with the CPU ...
I am writing an application and there will potentially be tens of thousands of labels (a log-viewing application of a sort), most of them hidden with ...
I have been reading and following a tutorial on writing an operating system from scratch by Nick Blundell which can be found at https://www.cs.bham.ac ...
When working on the text screen (mode 3, 80x25) both the usual Video Buffer at B800h and the Linear Frame Buffer (LFB) near the end of the 4GB address ...
I need to implement scrolling line up using function 06h of interrupt 10h. The problem is that I have the scrolled line, but symbols aren't showing up ...
only three character is display on the screen or video memory ? ...
I am writing a simple application that tries to use video mapped memory (Starting at address 0B800). For the most part I can write directly to that me ...
I have written a very simple kernel that loads inside QEMU with the help of GRUB. I probably have a problem in pointer calculation, but cannot really ...
Address of video memory (0xB8000), who is mapping video memory to this address? The routine which is copying the data from the address and putting to ...
I'm working on a project in 16-bit TASM, and quite a large part of it involves accessing the video memory quite extensively. The project is in 320x200 ...
when I comes to rendering things on screen using video card, only three options are available, if I understand correctly. These are DirectX (or XN ...
How to access the video memory of graphics card through OpenGL programming, specifically, to get all contents of video memory? I have tried the follo ...
I have interesting problem with my UiimageViews. I have an application (game with 2 houses) where I loaded a lot of images on the screen (I'm using UI ...