INT 21 - Phar Lap 386/DOS-Extender VMM - LOCK PAGES IN MEMORY AX = 251Ah EDX = number of 4k pages to lock if BL = 00h ECX = linear address of first page to lock if BL = 01h ES:ECX -> pointer to first page to lock Return: CF clear if successful CF set on error EAX = error code 08h insufficient memory 09h invalid address range SeeAlso: AX=251Bh,AX=EB06h,INT 31/AX=0600h