A Relative Long field is four bytes; obviously two would not fit into an eight-byte instruction (there's no such thing), much less six.. A Relative Short (to coin a term) is only two bytes, so that seems feasible, as long as a suitable one-byte opcode is available. But then, others would want relative to based, vice versa, and more opcodes are needed. Or, maybe those could be defined to use a register for the length, which would allow 12-bit opcodes, which are more plentiful. The drawback is using a register; but having variable-length MVCs would be a pretty good compensation.
sas On Wed, Jun 8, 2022 at 10:16 AM Schmitt, Michael <[email protected]> wrote: > I was imagining something just like MVC except relative. > >
