How does 0xB80000 is calculated in kernel.c?

[codeblaster]

Hi
in Bare Bones kernel.c, how did they calculate 0xB8000 as terminal buffer address?

[iansjack]

terminal_buffer is initialized in terminal_initialize:

Code: Select all

terminal_buffer = (uint16_t*) 0xB8000;

This is the memory-mapped address of the video buffer.

I'm afraid that you are just cutting and pasting code without understanding it, which is not a fruitful occupation. Read up on how text mode works in a VGA adapter.