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About LightBulbFun

  • Birthday 09/07/1999

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    London UK

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  1. LightBulbFun

    PPC7410 thermal adheasive?

    what was the heatsink clip setup exactly? from what you describe it sounds a lot like the plastic square that Lombards and Pismos used, that would snap round the ceramic package of the CBGA360 CPU itself and then have 2 screw holes for a heatsink to screw into perhaps one of these plastic squares could be used or adapted to replace the broken original setup? out of curiosity what SBC is it exactly?
  2. LightBulbFun

    Building the fastest Power Mac 9600

    BTW has anyone contacted sonnet? I hear they are generally quite willing to provide detailed technical info on their old PPC CPU upgrade cards wonder just how much info we could get from them, schematics, board layout info and any technical notes would be neat! LOL
  3. LightBulbFun

    Building the fastest Power Mac 9600

    yeah would be interesting to see what can be done ah cool find I had seen the first PDF but not the IBM one maximum size for L3 cache is generally 2MB the 7457 can "do" 4MB but only up to 2MB of it can be used as L3 cache I wonder if the L3 cache setup you mentioned can just be used in 2MB mode with the last 2MB ignored? (like 512MB SDRAM sticks in a G3 Beige or BW G3) I do still wonder how L2 cache is set/detected by Uninorth based macintoshes, I know there is an SPD chip on the CPU card that contains the info but I dont know what format it is in or how to manipulate it it must clearly be possible as this guy on ebay upgrade the backside L2 cache on a G4 to 2MB! https://www.ebay.com/itm/293535144530
  4. LightBulbFun

    Building the fastest Power Mac 9600

    with some semi cheap 7457's showing up on ebay it would be really interesting to see if they work on one of these sonnet cards perhaps time to revisit this project? @Bolle https://www.ebay.com/itm/184311937918 I also came across this most interesting normal apple G4 CPU card fitted with a 7448 on an interposer board to go from CBGA483 to CBGA360 https://forums.macrumors.com/threads/g4-7448-and-7457-swap.2233532/page-2?post=28563255#post-28563255 it would hilarious if you could use such a interposer-board here as well a 7448 9600 would be epic
  5. what you need is the sonnet L2/L3 cache enabler for OS X http://www.sonnettech.com/support/kb/kb.php?cat=319&expand=_a2_b169_b230_b154_b228_b74_a13_b233&action=a3
  6. LightBulbFun

    Display upgrade - PM 9600/350

    its a Radeon 9200 Mac edition the sticker on the back will say Mac on it and the card looks like this hopefully this helps keep in mind while 7.6 will boot with the 9200, you wont have full graphics acceleration
  7. LightBulbFun

    Opinions for BGA Rework

    user @dosdude1 offers such a service specifically for old macs I recommend you get in contact with him and check out his youtube videos
  8. LightBulbFun

    iMac G3 (Rev A -> C) G4 CPU Upgrade

    here is one max1zzz helped me out with when I was also getting started with all this BGA upgrade fun https://forums.macrumors.com/threads/diy-g4-cpu-upgrade-round-2-putting-the-power-into-flowerpower.2040272/
  9. LightBulbFun

    *Almost* Fastest PowerBook ever, and more to go.

    the annoying thing about Apple Open Firmware on the G3 BW and newer is if it does not recognise the CPU thats been installed it will halt on purpose, older Firmwares like found in the beige Macs, will actually boot on an unknown CPU, obviously all the "extra" bits like L2 L3 cache dont get enabled but at least they boot thats what the Giga Designs Firmware patch me and Dosdude1 used for the iMac G4 thing does, unlike the more developed firmware patches from sonnet and the like, which will mask a CPUs PVR etc all the Giga Designs does is remove the "halt on unknown CPU" thing from the firmware, sadly it seems like it the patch only works on Firmware versions 4.7.x and lower (and sadly the Sonnet Firmware patches etc are all machine specific) so the bare minimum to booting a PowerBook G4 with a 7448 CPU is to figure out how to patch out the "halt on unknown CPU" thing in its Firmware
  10. LightBulbFun

    PowerBook 2400c video memory expansion - software side

    for OS X, Xpostfacto includes an OpenCHIPS6555.kext driver (or something along the lines of that name) might be worth having a poke at?
  11. LightBulbFun

    Where to buy 60ns EDO RAM?

    im in the same boat https://forums.macrumors.com/threads/powersurging-to-mac-os-x-10-5-8-power-macintosh-9600-fun.2144305/ sadly I have not been able to find much these days like the OP, if anyone knows where to get some for relatively cheap lemme know
  12. LightBulbFun

    Building the fastest Power Mac 9600

    shame about the L3 cache vanishing, I have never had much luck with TSOP chips myself. with no L3 it would be a good board to experiment with, try a 7457 on it? those have 512KB of L2 so should help with the loss of L3. BTW have you tried contacting sonnet for some details on the CPU card? A friend of mine doing stuff like we do contacted sonnet for info on the TAM G3 upgrade cards and actually got back a good wealth of detail
  13. LightBulbFun

    Building the fastest Power Mac 9600

    Just wondering did you make any progress with this? I recently got a 9600 myself and Have been having much fun playing/experimenting with it which you can read about here https://forums.macrumors.com/threads/powersurging-to-mac-os-x-10-5-8-power-macintosh-9600-fun.2144305/
  14. LightBulbFun

    *Almost* Fastest PowerBook ever, and more to go.

    thats so Awesome to see did you have to run a Custom build of OS X along-side the custom Mobo FW when testing the 7448 CPUs? because AFAIK no version of OS X has native 7448 CPU (CPU Upgrade companies who sold 7448 upgrades for PMs got around this via either Firmware patches that masked the 7448 as a 7455, or via a special NVRAM patch) we used the NVRAM patch for when we fitted the 7448 CPU to the 7445 iMac, as the Firmware patch we used to get the machine to POST with the 7448 CPU, only removes the Halt on unknown CPU thing apple has, it does not patch anything else, so to get OS X to boot on the 7448 we had to use the NVRAM patch from one of the CPU upgrade companies. also out of sheer curiosity and research etc, do you have the Custom Firmware apple provided that let the MDDs Boot with the 7448 CPUs? I would love to play with that also reading the Schematics for the DLSD PowerBooks I had theorised that they where going to use 7448s but switched back to 7447Bs at the 11th hour, its pretty cool to see that I was indeed on the right path, but I wonder do you think the DLSD still has 7448 support in Firmware? (I know New world ROM PowerPC macs will Halt on POST if they detect a CPU with an unknown PVR otherwise) I just wanted to say again how awesome this all is im quite passionate about PowerPC (Apple) stuff esp the very technical side of things, so this is just beyond awesome and I cant wait to see more thank you very much for sharing what you have
  15. LightBulbFun

    *Almost* Fastest PowerBook ever, and more to go.

    thats some very cool information! id be very interested in seeing pictures of the whole setup, its interesting how you used MDDs as test beds, im guessing Motorola made up custom CPU cards for the 7448s 360CBGA foot print? (as the stock MDDs use 7455s which are 483 CBGA packages) im very interested in hearing your stories as I have been doing a lot of work and research into PowerPC CPUs and upgrading various Macs with faster ones which you can read about here I also have a few posts on Mac Rumors about my PPC CPU Upgrading adventures https://forums.macrumors.com/threads/making-a-g4-pismo-upgrade-at-home.2019269/ https://forums.macrumors.com/threads/diy-g4-cpu-upgrade-round-2-putting-the-power-into-flowerpower.2040272/ https://forums.macrumors.com/threads/replacing-the-pearl-in-the-clamshell-diy-ibook-g3-clamshell-g4-cpu-upgrade.2105654/ https://forums.macrumors.com/threads/bussing-around-with-a-g3-beige-xpc106-memory-controller-upgrade.2119510/ https://forums.macrumors.com/threads/show-us-your-chips.2127981/ I also helped dosdude1 with his iMac G4 upgrade project https://forums.macrumors.com/threads/worlds-fastest-imac-g4-2-ghz-imac-g4-cpu-upgrade.2125765/ BTW do you happen to have any Schematics for Apple desktop machines? I have quite a few PowerPC Laptop schematics but nothing for Apple desktop machines or CPU cards (the only desktop schematics I have are for iMac G4s and iMac G5s I would love to get some as it would help imensly with my research and upgrade projects