Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!linus!agate!usenet.ins.cwru.edu!ukma!rex!spool.mu.edu!mips!apple!rutgers!cbmvax!mks From: mks@cbmvax.commodore.com (Michael Sinz) Newsgroups: comp.sys.amiga.hardware Subject: Re: Crippled A3000 Message-ID: <22099@cbmvax.commodore.com> Date: 3 Jun 91 12:15:57 GMT References: Reply-To: mks@cbmvax.commodore.com (Michael Sinz) Organization: Commodore, West Chester, PA Lines: 38 In article tony@ais.org (Tony Poole) writes: > > I have a question that has to deal with a 16 Mhz A3000. > I am thinking about upgrading from a A1000, to an A3000, but don't >think I can afford the extra three or four hundred bucks that it would >take to buy a 25 Mhz 3000, so I may be aiming at the 16 Mhz. > I am told from my local dealer that this computer would not be upgradable >to 25 Mhz because the CPU is soldered in. > What I want to know is this: Will I be able to, sometime in the future, >purchase a third party board to connect expansion wise, and upgrade >to 25 Mhz, exactly the same as if I actually bought a 25 Mhz model? >I mean EXACTLY the same as, not close.... There is no way to make it EXACTLY the same. One of the problems is that if you get a 68040 card that also lets you run the motherboard CPU, the 68040 will have to run at 16MHz access to RAM on the motherboard and that would make things very slow. Either that or the motherboard CPU is disabled and the CPU card tries to drive the motherboard clocks. Again, this is not exactly the same as if you bought the 25MHz model. > Is this the only difference between the two models? There are some jumper differences and the fact that the FPU is a 68881 rather than a 68882. > I don't want to lay down the bucks now, and then later wish I had >sold my wife and dog to get the 25 Mhz (NO! I wouldn't do THAT....would I?). > I'm sure this has been covered before, but I'm not gonna wade >through screens of messages.....I'd rather waste "hundreds, if not >thousands" of the net's money! > Thanks! /----------------------------------------------------------------------\ | /// Michael Sinz - Amiga Software Engineer | | /// Operating System Development Group | | /// BIX: msinz UUNET: rutgers!cbmvax!mks | |\\\/// | | \XX/ Quantum Physics: The Dreams that Stuff is made of. | \----------------------------------------------------------------------/