BYTE SBYTE Table 3-2 Intrinsic Data Types. Туре 8-bit unsigned integer. B stands for byte 8-bit signed integer. S stands for signed Usage WORD 16-bit unsigned integer SWORD 16-bit signed integer DWORD SDWORD FWORD QWORD TBYTE REAL4 REAL8 REALIO 32-bit unsigned integer. D stands for double 32-bit signed integer. SD stands for signed double 48-bit integer (Far pointer in protected mode) 64-bit integer. Q stands for quad 80-bit (10-byte) integer. T stands for Ten-byte 32-bit (4-byte) IEEE short real 64-bit (8-byte) IEEE long real 80-bit (10-byte) IEEE extended real