IIRC the ZX Spectrum’s ROM included a stack based VM for floating point calculations with a ‘bytecode’ defining the operations - largely I think to cram more in

IIRC the ZX Spectrum’s ROM included a stack based VM for floating point calculations with a ‘bytecode’ defining the operations - largely I think to cram more instructions into the 16k. The full disassembly is available at https://skoolkid.github.io/rom/maps/all.html https://skoolkid.github.io/rom/maps/all.html