pub fn vgabuf_write(line: &[u8])Expand description
Write a line into the circular buffer.
line should be pre-formatted (including colour codes if desired) and
should not exceed VGABUF_LINE_LEN - 1 bytes. Trailing bytes beyond the
capacity are silently truncated.
This is lock-free (single atomic increment) and safe to call from interrupt handlers or any CPU core.