Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!husc6!mit-eddie!uw-beaver!tektronix!sequent!mntgfx!dclemans From: dclemans@mntgfx.MENTOR.COM (Dave Clemans) Newsgroups: comp.sys.atari.st,comp.sys.amiga Subject: Re: And the winner is... Message-ID: <808@dclemans.mntgfx.MENTOR.COM> Date: Fri, 17-Jul-87 12:00:37 EDT Article-I.D.: dclemans.808 Posted: Fri Jul 17 12:00:37 1987 Date-Received: Sat, 18-Jul-87 19:39:35 EDT References: <17680@cca.CCA.COM> <979@eneevax.UUCP> <8707142117.AA00550@cogsci.berkeley.edu> Organization: Mentor Graphics, Beaverton OR Lines: 13 Summary: ST memory size limitations Xref: mnetor comp.sys.atari.st:4484 comp.sys.amiga:6612 The ST has an architectural limitation of 15.5 megabytes. The other 1/2 megabyte of 68000 address space is taken up by rom's and I/O space. Existing ST's can easily be taken to 4 megabytes by using 1 megabit ram chips. With enough work you could take an existing system past 4 megabytes, but the amount of work needed would almost definitely be greater than the benefits you'd gain. However, if the expansion bus in the Mega-ST's was done correctly, it should be relatively simple to take one of these newer systems past 4 megabytes. dgc