; Addresses of global variables ; If not double buffering these point to the same buffer pub const FB_DISPLAY_PTR = 16 ; U32 Currently displayed buffer pub const FB_DRAW_PTR = 20 ; U32 Draw to this buffer pub const FRAME_BUFFER_SIZE = 24 ; U32 pub const PIXEL_WIDTH = 28 ; U16 pub const PIXEL_HEIGHT = 30 ; U16 ; Log2 of width in pixels, e.g. ; * 10 => 1024 * 768 pub const LOG_WIDTH = 32 ; U8 pub const BYTES_PER_PIXEL = 33 ; U8 ; Log2 of bytes per pixel ; * 0 => 8 bits per pixel ; * 2 => 32 bits per pixel pub const LOG_BPP = 34 ; U8