The s390 version of
as supports two architectures modes and eleven chip levels. The architecture modes are the Enterprise System Architecture (ESA) and the newer z/Architecture mode. The chip levels are g5 (or arch3), g6, z900 (or arch5), z990 (or arch6), z9-109, z9-ec (or arch7), z10 (or arch8), z196 (or arch9), zEC12 (or arch10), z13 (or arch11), z14 (or arch12), z15 (or arch13), or z16 (or arch14).
|s390 Options:||Command-line Options.|
|s390 Characters:||Special Characters.|
|s390 Syntax:||Assembler Instruction syntax.|
|s390 Directives:||Assembler Directives.|
|s390 Floating Point:||Floating Point.|