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About LightBulbFun

  • Birthday 09/07/1999

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    London UK

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  1. 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
  2. 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
  3. 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/
  4. 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
  5. 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?
  6. 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
  7. 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
  8. 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/
  9. 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
  10. 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
  11. LightBulbFun

    PowerPC 7457 upgrade for iMac G4

    Looks like someone actually paid $360 for one of those 7457s on ebay im a bit annoyed by that, not that I mind what someone spends their money on but I dont want these sellers thinking they get away with charging such obscene prices for such out dated and old CPUs...
  12. LightBulbFun

    PowerPC 7457 upgrade for iMac G4

    heres some iMac G4 schematics hopefully they are of use iMac-G4-schematics.zip
  13. LightBulbFun

    PowerPC 7457 upgrade for iMac G4

    ill mention a few things 1 your going to need a Firmware Patch for the 7457 to boot 2 I have schematics for all iMac G4s, and on the first gen ones which use 7450 CPUs, there are un-used pads for some L3 cache however I dont know exactly what needs to be populated for those to work, they do include a nifty PLL chart tho (all the PPC schematics do) 3 $360 is waay too much for a 7457 send the guy a best offer (I know the listing your referencing, im tempted to also send the guy a Best offer for 1 or 2, id like to replicate sonnets 1.2Ghz VGA TiBook upgrade, as they do provide the FW patcher for that, however I dont own a 550/667 VGA TiBook LOL) 4 that newer tech FW patcher, in my experience only works on PMG4s, however I have not tested it on a 4.5.x series BootROM machine thats not a PMG4, I have only tested it on 4.7+ machines where it does not work sadly. hopefully this helps and let me know if theres anything else you need, I have experience doing stuff like this
  14. LightBulbFun

    Building the fastest Power Mac 9600

    very nice work! shame the L3 refuses to show up have you seen how far you can clock the stock CPU? the fastest 7450 Apple used was on the 867Mhz quicksilver IIRC but I hear late 800Mhz eMacs can clock up to 1.33Ghz but I cant recall if those had 7450s or 7455s. also interesting on the ZIF sonnet card, it looks like if it detects a Bus speed bellow 66.8Mhz it sets the Multiplier to 9x which is the maximum multiplier supported by the XPC/MPC7410 CPU (50*9=450) im glad Sonnet thought about the Slocket adapters/PowerSurge machines, means the ZIF should work nicely in any future Beige Machine i get with my XLR8 slocket and thanks for the dump it does looks like there are some differences between mine and yours...
  15. LightBulbFun

    Building the fastest Power Mac 9600

    very interesting, which resistors are those exactly on both the 745x based Beige PCI cards and on the MDX upgrades? im guessing the 745x upgrades have regular PLL Resistors as they dont have to worry about auto-ranging since the bus speed is always set to 50Mhz with one of these... I have actually been wondering if you could solder 2 7448s in place of the 7447A/Bs on an MDX card and make the first 7448 MDD CPU upgrade card, that would be quite something. I have included a dump of the I2C/SPD EEPROM found on a 1Ghz Single CPU MDD FW800 CPU card I have, it would be interesting if anyone can make sense of it. do the PLL pads on the 400-500Mhz Sonnet ZIF cards also go to some sort of PLD/FPGA or? there is defo a multi-pinned chip on mine with a sticker over it which im guessing is some sort of PLD/FPGA of some kind (the card I have which is a 500Mhz one I have when on a 66.8Mhz bus will set the multiplier to 7.5 but on anything faster it sets the multiplier to 5x for 100*5=500Mhz but on a G3 beige where the bus is set to 83.3Mhz it runs at only 416Mhz... im quite curious now how the card would react to being installed into a Slocket and run on a 50Mhz bus, I own a G4 compatible slocket but i dont own any PowerSurge based Macintoshes sadly.) im defo going to be following this thread quite closely (I wonder if a 7457 would work on one of these boards? shame chips that apple did not use are so hard to find) 1Ghz-Single-7455A-1MBL3-MDD-CPU-CARD-SPD-EEPROM-DUMP.bin.zip