Note: This API call is for DOS and Win16 personality only. Use Family API for portability.

XMS API implemented via VXMS.DLL VDD

Function	Description	Status	Version
00h	Get XMS Version Number
01h	Request High Memory Area
02h	Release High Memory Area
03h	Global Enable A20
04h	Global Disable A20
05h	Local Enable A20
06h	Local Disable A20
07h	Query A20
08h	Query Free Extended Memory
09h	Allocate Extended Memory Block
0Ah	Free Extended Memory Block
0Bh	Move Extended Memory Block
0Ch	Lock Extended Memory Block
0Dh	Unlock Extended Memory Block
0Eh	Get Handle Information
0Fh	Reallocate Extended Memory Block
10h	Request Upper Memory Block
11h	Release Upper Memory Block
12h	Realloc Upper Memory Block
88h	Query any Free Extended Memory
89h	Allocate any Extended Memory Block
8Eh	Get Extended EMB Handle
8Fh	Realloc any Extended Memory