Being at a point where I’m interpreting bytecodes is really cool: every new thing I implement gets the interpreter a whole load further. I’ve now executed 70 instructions, including calls to both native and non-native methods with both void and non-void return values. It’s currently stopping at the start of the first method to require more locals than it takes parameters: the first method whose frame may need expanding, in other words. This might be slightly complicated by the fact that Rlocals is not used exactly as I thought it would be when I planned the frame-expanding code. I’m hoping this doesn’t matter.