About High Level Assembler for Mac OSX
A hybrid high-level/low-level programming language that fully supports the x86 instruction set. Assembly language modules written in HLA may be linked with code written in other languages (e.g., C/ObjC) or you may write stand-alone applications in assembly language with HLA.

HLA is a popular assembly language educational tool. The very popular “Art of Assembly Language” textbook (http://webster.cs.ucr.edu/AoA/index.html) teaches assembly language using the HLA compiler).

The HLA system includes the HLA “Standard Library” with over 1,000 different functions callable from HLA. HLA programs employing the HLA stdlib are portable across Mac OSX, Windows, Linux, and FreeBSD.