Further, if you want single-byte opcodes, then you took that space from 256 opcodes down to 64. It cost you 192 single-byte opcodes to use a 2b marker. This

Further, if you want single-byte opcodes, then you took that space from 256 opcodes down to 64. It cost you 192 single-byte opcodes to use a 2b marker. This wouldn't be possible with the current x86 encodings [1]. [1]: https://www.sandpile.org/x86/opc_1.htm https://www.sandpile.org/x86/opc_1.htm