Int 15 Fn DE1A - Desqview V2.23+ - "putcommon" - Deallocate "common" Mem [Q]
AX = DE1Ah
ES:DI -> previously allocated block
Return: AX = 0000h (successful)
Note: this function may be called from within a hardware interrupt handler
See Also: AX=DE0Dh,AX=DE19h