Xref: utzoo comp.sys.amiga.misc:3866 comp.sys.amiga.programmer:3821 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!wuarchive!kuhub.cc.ukans.edu!markv From: markv@kuhub.cc.ukans.edu Newsgroups: comp.sys.amiga.misc,comp.sys.amiga.programmer Subject: Re: So, how close is WB2.0 to a burn-in date? Message-ID: <1991May22.175212.30988@kuhub.cc.ukans.edu> Date: 22 May 91 22:52:12 GMT References: <1991May20.170355.19033@coplex.uucp> <1991May22.191722.20379@msuinfo.cl.msu.edu> Organization: University of Kansas Academic Computing Services Lines: 36 > I believe that the original memory map for the Amiga left space for > 1 meg of roms. So even if its not immediatly physically possble, > it is certainly technically possible [for CBM at least] to put > KS2.0+CDTV specific stuff into roms and into CDTV's. THis is not > to say that they willl, but they certainly could. Yes. And since they *are* Commodore, they are free to decide to use any of the remaining "reserved" space in the 24 bit address space map. > Do Amiga500's and Amiga2000's have an extra ROM socket to hold 2.0 in? > If not I'm sure we will soon see ROM extender hacks to allow people > to put 512k 2.0ROMS in those machine. The 500/2000 ROM sockets DO support 512K ROMs, but not the 1000s. The 3000 can support either 500/2000 style chips, or "wider" chips that let the 3000 ROM space be addressable 32 bits wide. (Of course 16 versus 32 bits is less an issue than the speed of the ROMs). > Hopefully this will happen for A1000s too, since I own one :-) The 1000 is a bit tricky. The 1000s address circuitry is all several discrete componants, and the WCS shows up in this space and has it's own wierdness (write protecting, etc). Also the WCS is decoded so that it repeats itself 4 times in the 1MB ROM space (ie: F0, F4, F8, and FC all map to F0 in the WCS). This is why the Rejuvinator replaces the WCS wholesale, rather than trying to hack the 1000 ROM sockets for instance. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Mark Gooderum Only... \ Good Cheer !!! Academic Computing Services /// \___________________________ University of Kansas /// /| __ _ Bix: mgooderum \\\ /// /__| |\/| | | _ /_\ makes it Bitnet: MARKV@UKANVAX \/\/ / | | | | |__| / \ possible... Internet: markv@kuhub.cc.ukans.edu ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~