I am working with SVGA (640X480 256 colors). I am trying to write directly to video memory in 32-bit protected mode. I started off with a simple routine to draw a single pixel (I would be happy if I could see that). Whether I write to the base address of the graphics controller or the video memory, I see a blank screen. Also I have set the vesa mode to 101h.
I am working with VxWorks. I am looking for a sample program in either 32bit assembly or C/C++ which, perhaps will be able to tell me what I am doing wrong.
Also is it true that if I am working in 32-bit protected mode then I don't have to worry about bank switching?
Any help would be highly appreciated.
I am working with VxWorks. I am looking for a sample program in either 32bit assembly or C/C++ which, perhaps will be able to tell me what I am doing wrong.
Also is it true that if I am working in 32-bit protected mode then I don't have to worry about bank switching?
Any help would be highly appreciated.
