In addition to registers, numeric values, relative addresses, and lengths, some machine instruction operands require immediate data. Such data is assembled directly into the object code of the machine instructions. Use immediate data to specify the bit patterns for masks or other absolute values you need.

Specify immediate data only where it is required. Do not confuse it with address references to constants and areas, or with any literals you specify as the operands of machine instructions.

Immediate data must be specified as absolute expressions whose range of values depends on the machine instruction for which the data is required. The immediate data is assembled into its binary representation.