Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 (Tek) 9/28/84 based on 9/17/84; site orca.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!mhuxn!mhuxr!mhuxt!houxm!vax135!cornell!uw-beaver!tektronix!orca!davecl From: davecl@orca.UUCP (Dave Clemans) Newsgroups: net.micro.amiga Subject: Re: Re: Amiga keyboard layout Message-ID: <1735@orca.UUCP> Date: Tue, 17-Sep-85 12:07:15 EDT Article-I.D.: orca.1735 Posted: Tue Sep 17 12:07:15 1985 Date-Received: Thu, 19-Sep-85 06:22:52 EDT References: <2166@iddic.UUCP> <675@utastro.UUCP> Organization: Tektronix, Wilsonville OR Lines: 20 If you want a negative comment... My understanding is that the Amiga is designed with in a sense two memory busses, with the display processors only talking to one of them; thus if you run from memory on the second "bus" your performance wouldn't be affected by traffic on the display "bus". However to use the second "bus" you have to buy an expansion box at extra cost. The only memory expansion possibilities within the box seem to be an extra 256K for the display "bus", making a total of 512K. This total also seems to be the limit for the display "bus". 512K would seem to me to be somewhat limited if you wanted to do a lot with high resolution playfields. I also recently saw a message on Compuserve that the Amiga graphics processors can only address 512K, and thus even if you could add more display memory you couldn't use it (i.e. 1MB chips wouldn't help you...). Does anybody know whether or not this is true? dgc