pub fn vga_debug_write(s: &str)Expand description
Write a string directly to the VGA framebuffer in real time.
Each character cell is cleared before drawing, preventing ghosting from scrolling or rapid updates. Colours are high-contrast (light grey on dark navy : similar to Linux fbcon and FreeBSD vt(4)).
Newlines, carriage-returns, and tab stops are handled. When the cursor reaches the bottom of the debug area, the content scrolls up one line.