Various memory models

Memory model	Description
TINY	Has only one segment. Therefore both data and code combined cannot be greater than 64k.
SMALL	Has one code segment and one data segment. Therefore each code and data cannot be greater than 64k.
MEDIUM	Has more than one code segment and has only one data segment. So code can be greater than 64k but data cannot be greater than 64k.
COMPACT	Has one code segment and many data segment. Hence data can be greater than 64k but code cannot be greater than 64k.
LARGE	Has more than one code segment and more than one data segment. No array is larger than 64k. thus both data and code can be greater than 64k.
HUGE	More than one code segment and more than one data segment. Arrays may be larger than 64k. hence both data and code can be greater than 64k.
FLAT	Has only one segment upto 4GB. All data and code including system resources are in a single 32 bit segment.