pub const BRANCH: u32 = 0x63;
pub const JALR: u32 = 0x67;
pub const JAL: u32 = 0x68;
pub const INTEGER_IMMEDIATE: u32 = 0x13;
pub const INTEGER_REGISTER: u32 = 0x33;
pub const LOAD: u32 = 0x3;
pub const STORE: u32 = 0x23;
pub const SYSTEM: u32 = 0x73;