Weighted simple reset pushdown automata

We define a new normal form for weighted pushdown automata. The new type of automaton uses a stack but has only limited access to it. Only three stack commands are available: popping a symbol, pushing a symbol or leaving the stack unaltered. Additionally, ϵ-transitions are not used. We prove that this automaton model can recognize all weighted context-free languages (i.e., generates all algebraic power series).