Each VAX instruction, even before going into crazy space with POLY and other complex ones, has tons and tons of addressing modes, modifiers, etc. To the point

Each VAX instruction, even before going into crazy space with POLY and other complex ones, has tons and tons of addressing modes, modifiers, etc. To the point that the largest possible VAX instruction is longer than VAX memory page, at IIRC 522 bytes to 512 byte page size.