>Date: Fri, 17 Jan 2003 14:38:42 -0800 >From: "Robert P. McAllister" <[EMAIL PROTECTED]>
>According to documentation on the xlr8 CD, Speculative Processing is >supported on 9600 boards manufactured after September, 1997 and newer >systems. Mine was manufactured in November, 1997 and the xlr8 control >panel doesn't even have a selection for it (I assume it's automatically >enabled). On my 7500, which also has an xlr8 card and the same software, >there is a selection for it. That would be the 9600 Enhanced also known as the 9600 Kansas. The information above should include the 8600 Enhanced as well. In Apple System Profiler the ROM Revision will be $77D.34F5 for an Enhanced 8600 or 9600. For the earlier 9600/8600 models (doesn't support SP) the ROM revision will be $77D.34F2. For an 8500 or 9500 it will be $77D.28F2. If you just have a bare motherboard, you can examine the ROM chips. On the 95/9600 they are on the top side of the board. On the 77/85/76/8600 they are on the under-side of the board. They are four chips side by side. The chips are 1.1" X .5". There are 44 pins on each chip, 22 pins per long side of the chip. In the x500 series and the 7600 they will be labeled in part 341S0168 through 341S0171. On the original 8600 and 9600 and the 7300 they will be labeled 341S0280 through 341S0283. On the Enhanced 8600 and 9600 they will be labeled 341S0380 through 341S0383. The latter are the Kansas ROM which support Speculative Processing. The Kansas ROM can be installed on any x500 or x600 (and 7300 and 7200 as well, plus PowerSurge and Catalyst clones) and will work properly and allow speculative processing to work properly. The only issue I've seen in installing the Kansas ROMs on machines in which they did not originally ship is with some of the G3/G4 software utilities. G3/G4 software is sometimes used to disable the motherboard cache (the cache is not needed since the G3/G4 upgrade has the backside cache on-board). When some of the G3/G4 utilities see the Kansas ROMs they assume that there is no motherboard cache present to disable. So, for example, if you install the Kansas ROM in a 9500, which has a soldered down 512K cache, some of the G3 utilities won't disable the motherboard cache for you, because the utility never bothered to check for a motherboard cache, because no Kansas machine had one. Jeff Walther -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> 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/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
