INT 21 - Phar Lap 386/DOS-Extender VMM - UNLOCK PAGES AX = 251Bh EDX = number of pages to unlock if BL = 00h ECX = linear address of first page to unlock if BL = 01h ES:ECX -> pointer to first page to unlock Return: CF clear if successful CF set on error EAX = error code 09h invalid address range SeeAlso: AX=251Ah,AX=EB07h,INT 31/AX=0601h