How does 0xB80000 is calculated in kernel.c?

codeblaster · **Joined:** Fri Apr 24, 2015 1:25 pm **Posts:** 14

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

iansjack · **Posted:** Sat Apr 25, 2015 2:18 am

terminal_buffer is initialized in terminal_initialize:

Code:

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.

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How does 0xB80000 is calculated in kernel.c?

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