cesky: 
,
English: 
INTNUM
Integer number arithmetics
EndianByte - change endian of Byte
INPUT:
DX:AX = number in big/little endian
OUTPUT:
DX:AX = number in little/big endian
Notes: x86 CPU uses little-endian, least significant byte is lowest.
EndianWord - change endian of Word
INPUT:
AX = number in big/little endian
OUTPUT:
AX = number in little/big endian
Notes: x86 CPU uses little-endian, least significant byte is lowest.
EndianDWord - change endian of DWord
INPUT:
AL = number in big/little endian
OUTPUT:
AL = number in little/big endian
Notes: x86 CPU uses little-endian, least significant byte is lowest.
