Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!wrdis01!nstn.ns.ca!uupsi!sunic!chalmers.se!etek.chalmers.se!f90angu From: f90angu@fy.chalmers.se (Andreas Gunnarsson) Newsgroups: comp.sys.amiga.misc Subject: Re: KS 2.0 for A1000 (was: Three (dumb) questions) Message-ID: <1991Mar23.035000.11891@fy.chalmers.se> Date: 23 Mar 91 03:50:00 GMT References: <1991Mar22.170907.26385@ida.liu.se> Organization: Chalmers University of Technology, G|teborg, Sweden Lines: 35 In article <1991Mar22.170907.26385@ida.liu.se> d88ricwe@odalix.ida.liu.se (Rickard Westman) writes: [stuff deleted] >Only one half of Kickstart 2.0 would fit in the >daughterboard RAM. Commodore could provide a Kickstart disk which >loads half the ROM image in WOM and half in RAM @ $200000. Actually, >the first half would be loaded into WOM automatically. When the boot >ROM code jumps into the WOM, it could check the checksum of the other >half. If it was wrong it could be because the RAM image was corrupted >or never loaded. In either case, the second half would be loaded from >disk. Of course, expansion.library and trackdisk.device would have to >be located in the $FC0000 part for this to work. > >I think this would be a good idea, but chances are Commodore wouldn't >think of it as worthwhile. In that case I hope they will be kind >enough to make it possible for someone else to provide such a disk, by >locating the needed libraries/devices, as well as any unused space in >the $FC0000 part. >-- >Rickard Westman, University of Linkoping, Sweden Why not simply put the KS at $200000 and use the $fc0000-$ffffff memory as RAM. The only drawback is that if any program tries to write at $f80000-$fbffff the RAM at $fc0000 would become ReadOnly, but no program should write in that range anyway. I just came to think about another drawback: the biggest memory chunk would be 256K less, but that shouldn't be too much of a problem. ============================================================================== 73 es 88 de SM7TLS f90angu@fy.chalmers.se Andreas Gunnarsson -.-- --- ..- -.. --- -.- -. --- .-- -- --- .-. ... . ..--. ============================================================================== -- ============================================================================== 73 es 88 de SM7TLS f90angu@fy.chalmers.se Andreas Gunnarsson ==============================================================================