I am understanding why the memory management system is not working now!!

I am understanding why the memory management system is not working now!!
	modified:   16.exe
	modified:   16/exmmtest/EXMMTEST.DSK
	modified:   16/exmmtest/EXMMTEST.EXE
	modified:   16/exmmtest/EXMMTEST.MAP
	modified:   16/exmmtest/EXMMTEST.PRJ
	new file:   16/exmmtest/HEAP.16
	new file:   16/exmmtest/TC0000.SWP
	modified:   16/exmmtest/src/exmmtest.c
	modified:   16/exmmtest/src/lib/16_ca.c
	modified:   16/exmmtest/src/lib/16_hc.c
	modified:   16/exmmtest/src/lib/16_head.c
	modified:   16/exmmtest/src/lib/16_head.h
	modified:   16/exmmtest/src/lib/16_mm.c
	new file:   16/exmmtest/src/lib/nyan/kitten.c
	new file:   16/exmmtest/src/lib/nyan/kitten.h
	modified:   exmmtest.exe
	modified:   inputest.exe
	modified:   makefile
	modified:   scroll.exe
	modified:   sountest.exe
	modified:   src/exmmtest.c
	modified:   src/lib/16_ca.c
	modified:   src/lib/16_hc.c
	modified:   src/lib/16_head.c
	modified:   src/lib/16_head.h
	modified:   src/lib/16_mm.c
	modified:   src/lib/nyan/kitten.c
	modified:   src/lib/nyan/kitten.h