1. Overview of the Solaris x86 Assembler
Syntax Differences Between x86 Assemblers
During the translation of higher-level languages such as C and Fortran, the compilers might invoke as using the alias fbe (“Fortran back end”). You can invoke the assembler manually from the shell command line with either name, as or fbe. See the as(1) man page for the definitive discussion of command syntax and command line options.