pub const PREFIX_REPZ: u8 = 0b01000; pub const PREFIX_REPNZ: u8 = 0b10000; pub const PREFIX_MASK_REP: u8 = PREFIX_REPZ | PREFIX_REPNZ; pub const PREFIX_MASK_OPSIZE: u8 = 0b100000; pub const PREFIX_MASK_ADDRSIZE: u8 = 0b1000000; pub const PREFIX_66: u8 = PREFIX_MASK_OPSIZE; pub const PREFIX_67: u8 = PREFIX_MASK_ADDRSIZE; pub const PREFIX_F2: u8 = PREFIX_REPNZ; pub const PREFIX_F3: u8 = PREFIX_REPZ; pub const SEG_PREFIX_ZERO: u8 = 7; pub const PREFIX_MASK_SEGMENT: u8 = 0b111;