Please forgive if this is getting old, but I'm frustrated with this and have more information since last time I posed the question. Maybe someone will suggest a path I can follow.
I put a dual 800 mhz Apple cpu from a Quicksilver in a Digital Audio. This slightly unorthodox system has been trouble free except that the 1 meg L3 caches on each processor don't work. In os 9 and in Panther, free software from Powerlogix and Sonnet enable these caches just fine, but they don't work in Tiger (10.4.3). The commercial product for cache specifies (in the docs and via email) that it doesn't work with duals. I've tried everything with a clean install of Tiger and with a safe boot. I have not pulled any hardware out of the machine to try the various enablers, but the hardware configuration is exactly the same in Panther and Tiger. Everything works in both except the L3s. I've caught flack for not specifying my machine configuration when asking a question, so the details are below. And yes, it has the latest firmware. I've done a bunch of browsing and experimentation, including resetting the nvram etc to no avail. The application Reggie CS, which is part of the CHUD set of developer's tools on the 10.4 installation disk, should be capable of turning on the L3 caches on each processor, but apparently it does not detect them (failure to write error.) The Sonnet Cache program, which runs very early in the verbose startup sequence (right after the California Regents) shows a hex value leading off with zero, as does Reggie. That means it doesn't see the hardware, as far as I can tell from my browsing. So whatever is missing or blocking the recognition of the caches happens before the verbose part of the startup. I've looked at the contents of the nvram with printenv in Open Firmware, but I see nothing that pertains to caches, either L3 or L2, which works fine, by the way. I suspect something in the bootrom, but I haven't learned to access it yet and am not sure it is wise to mess with it even if I did. So hardware is good, the computer can see it in os 9 and Panther, but something is going on in Tiger. The L3 cache is supposed to be a pretty good performance boost especially in certain apps. It bugs me no end that I can't find the problem. Thanks for reading this lengthy inquiry. Suggestions? Rich The machine: G4 Digital Audio (PowerMac 3,4) Boot Rom Version: 4.2.8f1 896 MB SDRAM ATI Radeon 9600 Pro: (two monitors) PCI Cards: Acard 6280M ATA card-4 drives Firewire/USB2 card (so the machine has two firewire buses and a usb 2 bus in addition to the native usb 1.) Internal Modem ATA Pioneer DVR-109 External 200 MB firewire drive Firewire Pioneer DVR-104 -- G-List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-List list info: <http://lowendmac.com/lists/g-list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:g-list@mail.maclaunch.com> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-list%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
