please clarify the context (e.g., a misspelling of a technical term, a pop-culture reference, or an industry abbreviation). I will be happy to provide a separate, responsible article on that topic as well.
The instruction set is a true subset of the Z80: 8-bit loads, arithmetic/logic, jumps/calls, and stack operations. Critically, the SM83 does not support the Z80’s IX/IY index registers, nor the full set of bit manipulation instructions. This made hand-optimized Z80 code incompatible without revision. SM83. SEXMEX
