On all HP-UX platforms the _architecture_ variable is set to hp9000s700 by default. This variable is defined in <nmake_root>/lib/make/Makeinstall.mk which is included by the default Makerules.mk file.
The _architecture_ variable is not used internally by nmake, it is provided for use by the users. If you are running nmake on an hp9000s800 hardware platform and need $(_architecture_) to correctly reflect this then we recommend you reset _architecture_ in your project's global makefile. For example:
_architecture_ = hp9000s800