Try these links: http://www-106.ibm.com/developerworks/linux/library/l-ppc/ http://developer.apple.com/techpubs/macosx/DeveloperTools/Assembler/AssemblerTOC.html http://www.lightsoft.co.uk/Fantasm/Beginners/begin1.html http://www.mactech.com/articles/develop/issue_21/21balance.html http://penguinppc.org/~hollis/ -- Boris