Jochen Busch wrote: > > hi > > (late addition..) > > >One of the problems appears to be that in our older machines Open > >Firmware builds the device tree improperly for multiple processors. > >You can think of Open Firmware as a tiny Operating System. There are > >versions and revisions and our machines have one of the oldest > >clunkiest versions. Newer versions handle this much better. > > I guess this prob belongs to all those �nix�s > For months I try to install Linux on my Pulsar / S900 (233DP) > And I guess due to Open Firmware related Stuff I never got SMP running.. > the 2nd Prozessor wouldnt work at all..most likely the whole machine > got stuck during Boot procedure into Linux (via Bootx) > This Isue as well as the Pci Bug of the S900 (PCI to PCI Bridge, IRQ Sharing) > wich results in the fact that all lower 4 PCI Slots have to share one > single IRQ... > wich logically results in the Fact, that only one Card in the lower 4 > Slots can be used... > (by the way: is this the same in MacOSX ? : I guess it should because > this is Open Firmware / device tree related as well... > You�ll find this discussed here: > >http://www.geocrawler.com/mail/thread.php3?subject=Status+of+PCI-PCI+bridge+on+UMAX+S900&list=3) > > >Alas, > >there is no way to update our Open Firmware as it lives in the ROM. > > Update no!? might be.....well..but patchable ;) > As far as I know..you can boot via open firmware..( and manipulate settings..) > but there also semms to exist a controlpanel that lets one change the > open Firmware settings via MacOS... > (I just have seen it here: > http://www.linux-magazin.de/ausgabe/1998/09/PPCLinux/ppclinux.html) > (unlukily its in German..but theres also a screenshot of this controlpanel) > > greetings jo
?????? I think you have the wrong list, but..... S900 boots smp aware into linux via quik/OF (OF version is 1.0.5) The OF 'control panel' you mention is an app called boot variables (although you can also use an apple utility called system disk) that allows you to set certain variables in the non-volatile ram - this is what you reset to defaults when you zap the pram. Open firmware on the s900 defaults to interacting with the user via the serial port. Our machines have no onboard video - so this makes sense I suppose...... Via the aforementioned apps you can change your input and output devices to your keyboard and video card so you can interact directly with the machine before it boots an OS. By booting this way you avoid any kludges that MacOS classic does to support smp - the slate is clean for Linux to avoid the MacOS rom (which is the default boot device btw) and initialize the system hardware for its own uses. Apple never intended the early OF to boot the machine - which is why we each have a proprietay rom that umax had to license from Apple. The Linux developers have found a way to point OF in the right direction and start up Linux without using this rom. Apple has even gone this way in their later versions of MacOS classic by including a MacOS ROM file in the system folder. errrggggh.... enough rambling, Tom btw - Pastor Mac - It was earlier versions of BootX that had the problems with OS9.xxx sorry about drifting off-topic guys........ -- SuperMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> SuperMacs list info: <http://lowendmac.com/supermacs/list.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/supermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
