Pereira, DavidAycock, John2008-02-262008-02-262002-09-30http://hdl.handle.net/1880/45370Python programs are implemented by compiling them into code for a virtual machine. Mamba is a new virtual machine for Python whose design is minimalist and register-based. In contrast, the current Python virtual machine is stack-based and contains almost six times as many instructions as Mamba. We anticipate that our smaller instruction set will greatly simplify optimization implementation. In this paper we detail Mamba's instruction set and execution model.EngComputer Scienceunknown2002-706-0910.11575/PRISM/30289