I highly recommend this writeup of someone bootstrapping half a language from raw hexadecimal upwards:<p><a href="http:&#x2F;&#x2F;homepage.ntlworld.com&#x2F;edmund.grimley-evans&#x2F;bcompiler.html" rel="nofollow">http:&#x2F;&#x2F;homepage.ntlworld.com&#x2F;edmund.grimley-evans&#x2F;bcompiler....</a>