They violate the Bogotá Instruction Set Convention of 1983 :)
In all seriousness, if, let's say a MIPS processor had a NAND instruction, that would be illegal because it does not adhere to the MIPS spec
In all seriousness, if, let's say a MIPS processor had a NAND instruction, that would be illegal because it does not adhere to the MIPS spec