seems QEMU doesn't use the checksum field of the CMOS (RTC). fixed
tree0975480e099d1e30733e6f7c5766fba2ee796d06
-rw-r--r-- 696 README
-rw-r--r-- 665 SConscript
-rw-r--r-- 2804 SConstruct
-rw-r--r-- 165 TODO
drwxr-xr-x - boot
drwxr-xr-x - doc
drwxr-xr-x - include
drwxr-xr-x - init
drwxr-xr-x - kernel
-rw-r--r-- 1636 linker.ld