Path: utzoo!attcan!uunet!husc6!rutgers!aramis.rutgers.edu!hedrick From: hedrick@aramis.rutgers.edu (Charles Hedrick) Newsgroups: comp.unix.microport Subject: Re: Physical memory access with SystemV/AT Message-ID: Date: 14 Jun 88 03:31:24 GMT References: <185@focsys.UUCP> <1019@sdcc12.ucsd.EDU> <8565@lll-winken.llnl.gov> Distribution: na Organization: Rutgers Univ., New Brunswick, N.J. Lines: 12 I don't understand the two messages saying they wished there were a way to access screen memory directly. There is, and the original question gave it. I even use it in my version of microemacs (the diffs for which were posted to this group some time ago). It uses the shmcreate program, which can be used to create a System V shared memory segment for a region of physical memory. The original question was simply whether there was a way to do this for a large segment (other than the obvious way of using several contiguous small ones). There is some maximum segment size documented (which I don't recall, since my documentation is elsewhere). It's that limitation on segment size, not the existence of the facility, which was the subject of the question.