INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - CHECK IF ??? MAILBOX OWNED AX = BFDEh BX = 0016h CX = index of ??? mailbox (0000h-0004h valid, but no range checking done) Return: AX = status 0000h no one owns mailbox 0001h mailbox has an owner BX destroyed SeeAlso: AX=BFDEh/BX=0015h,AX=BFDEh/BX=0017h