From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 8 Aug 2001 10:47:23 -0700 From: Mike Fedyk To: Linux PPC Dev Subject: Re: [off topic] switching cpus Message-ID: <20010808104723.Q22821@mikef-linux.matchmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Wed, Aug 08, 2001 at 12:21:52PM -0500, Jeff Walther wrote: > > At 03:36 8/8/2001, Steven Hanley wrote:>All > > > >I have a 7300/200 which is broken (faulty mother board), a perfectly working > >7200/120 and a 7200/75 to play with, I am wondering is it feasible to pull the > >cpu out of the 7300/200 and put it in the 7200/120 and have everything still > >work? or is this not something that should be played with? > > The 7200 does not have a CPU slot, so there is no way physically to plug in > the CPU card from the 7300. Further, the 7200 chip set (which is a little > different from the 7300 chip set) uses the DRTRY signal which is not > available on the Apple CPU card edge connector (though it is available on > third party upgrades), so even if you could hack the card in, you'd still > need to wire up the DRTRY signal somehow. > > (the following isn't relevant, but it is vaguely interesting) > The 7500, 7600 and 7300 (as well as the rest of the x500, x600 PowerSurge > family) uses the Hammerhead memory controller and CPU bus arbiter. The > 7200 Catalyst family uses a different memory controller and CPU bus > arbiter. > > Interestingly, I've found some 7200 motherboards use the same ROM as the > x500 family (Apple part numbers 341S0168, 341S0169, 341S0170, 341S0171 > while others use a different ROM that is apparently only for the 7200: > 341S0106, 341S0107, 341S0108, 341S0109. > > The motherboards in question all have the same part number and range from > 75 MHz to 110 MHz, so I have not been able to determine any rhyme or reason ^^^ One small correction, 7200s go up to 120Mhz. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/