BTW there are (were) two main forms of assembler formats, the one shown above and "unix form" which is a little more terse "movl" vs. "move.l" addressing modes

BTW there are (were) two main forms of assembler formats, the one shown above and "unix form" which is a little more terse "movl" vs. "move.l" addressing modes are also slightly different - neither is 'right', you use what your tools do