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The virtual machine is stack based and the architecture is ice.

The architecture is capable of handling 64bit integers, floating point and complex numbers. Arithmetic operations expect operands to be pushed in human order. Calls should push parameters on reverse on the stack, while it's the function's responsibility to tell the environment how many parameters it expects using the arity instruction. The final bytecode is optimized for size and sometimes even easy to read in a hex editor (for example the call.k debug instruction translates to C0 DE, code debug).