modified:   Makefile
	modified:   include/const.h
	modified:   include/global.h
	modified:   kernel/clock.c
	new file:   kernel/graphics.c
	modified:   kernel/main.c
	modified:   kernel/start.c
	modified:   lib/kliba.asm
	new file:   tetris/demo.c
	modified:   boot/loader.asm
	modified:   include/const.h
	modified:   include/global.h
	modified:   include/proto.h
	modified:   kernel/clock.c
	modified:   kernel/global.c
	modified:   kernel/graphics.c
	modified:   kernel/i8259.c
	modified:   kernel/keyboard.c
	modified:   kernel/main.c
	modified:   tetris/demo.c