Words and double words ( 16 and 32 bit quantities ) are stored in Intel byte order ( lowest address is least significant ) .

Certain records , notably SEGDEF , PUBDEF , LINNUM , LEDATA , LIDATA , FIXUPP and MODEND , contain size , offset , and displacement values which may be 32 bit quantities for Use32 segments . The encoding is as follows .

o

When the least significant bit of the record type byte is set ( ie record type is an odd number ) , the numeric fields are 4 bytes .

When the least significant bit of the record type byte is clear , the fields occupy 2 bytes ( 16 bit Object Module Format ) . The values are zero - extended when applied to Use32 segments .

See the description of SEGDEF records for an explanation of Use16 / Use32 segments .