> >Apparently the 7x00's PCI bus is not so good, because it had to support > >the 601 processor which was pre-PCI, so even with a 604 or G3 it's > >using a PCI interface designed for the 601.
> This is a good hypothesis because it fits the discussed facts, but it > is not the case. The 7x00 and 8x00 and 9x00 all have exactly the > same PCI bus(ses) supported by the same Bandit chip bridge and > separate bus arbiter, and the entire family of x500 + 7600 machines > use the same ROM. Sorry, misunderstanding there... I didn't mean to imply that the 7x00 was worse than the other first-generation PCI Powermacs, I was comparing it with the Beige G3s. Let's verify that, though... I summon the spirit of Google... Anyway, there's no mention of PCI in the PMC601 user's manual, that shows up first with the 604e, via the MCP105/106 bridge memory controllers. http://e-www.motorola.com/webapp/sps/site/prod_summary.jsp?code=MPC105-ARCHIVED "The MPC105 PCI Bridge/Memory Controller provides a bridge between MPC603 or MPC604 microprocessors and the Peripheral Component Interconnect (PCI) bus." So... Apple likely had to do some workaround to support PCI with the 601 CPU. Doing their own PCI bridge would probably qualify as a workaround. :) What does the Beige G3 use? -- Unsupported OS X is sponsored by <http://lowendmac.com/> Support Low End Mac <http://lowendmac.com/lists/support.html> Unsupported OS X list info <http://lowendmac.com/lists/unsupported.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive <http://www.mail-archive.com/unsupportedosx%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
