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the problem with using existing G3 ZIF's is they have 3.3V L2 cache so you can only swap 7400's onto them, 7410's sadly dropped support for 3.3V cache what would be neat is if someone came up with a modern ZIF design, I dont think it would be too much work in the grand scheme of things for...

interesting! so a 166Mhz 603ev CPU card *will* actually work in a 1400/117 machine but one might have to twiddle with the card to get it to work so its not that its fundamentally incompatible then, which is what i was wondering about, because again there are much faster G3 upgrade cards for the...

hang on a tick, the 166 needing a matching logicboard due to the *BootROM* is very interesting do you have any more details on that, ie do you know what happens if you try a 166 card in a 133 logicboard? this is quite interesting because the 603e and 603ev do have different PVR versions...

you dont need to downgrade the BootROM/OpenFirmware version of any New World Mac, to boot the original install media you can boot Mac OS 8.6 on an Original clamshell, even when said clamshell is on the latest 4.1.7 firmware (Ditto Sawtooth 4.2.8) all it requires is that you find the original...

I know if you go through the G4 DA schematics it mentions a connector for an "external" ROM flash, a life-boat connector of sorts I know also many intel Macs have such a connection also :)

I dont think this is worth creating my own thread over, so Hopefully @Daniël does not mind me slapping it in here, but I am curious if anyone knows just WTF this is? this was something from a few years back, backstory is this was a period G4 Pismo card (as in one of the ones done back in the day...

interesting :) I figured those where level shifters to shift the 5V level 60x bus from CPU slot to a 3.3V or lower level for the CPU itself

very interesting to learn that Tanzania machines can boot directly off the CPU in the L2 cache slot without the need for any 3rd party software, thats pretty awesome for anyone who wants to run a more obscure OS on their 4400 or OS X which cant use an L2 cache CPU card otherwise hypothetically...

Sawtooth, is the code name for the PowerMac3,1 first Generation Powermac G4 with AGP graphics, us Apple computer nerds/hobbiests etc use it to refer to that machine since "PowerMac G4 (AGP Graphics)" can be a bit ambigious as apart from the Yikes!, every PowerMac G4 generation has AGP graphics...

very interesting results! indeed as I understand it, the Mach5 motherboards and CPU cards use some extra pins on the CPU connector that are not used on older motherboards, so you will want to stick with Kansas motherboards for playing with Mach5 cards again its strange to see the IBM Mach5...

Been doing a bit of internet sleuthing recently mainly to figure out the whole mystery of the PowerBook 1400 and the PowerBook PowerPC upgrade card that you can read about in @Daniël's BGA thread but while doing that, I did start to wonder just where *did* all the IBM PDF's go? thankfully for...

the 5500/6500/TAM are all based on the same gazelle motherboard, so they really do use the same ROM's in this case :) I swear there is another thread on here about making a 6500/5500 play the TAM chime and that yeah its set by some resistors, but I think by the computer chassis itself, IE you...

thats good to know :) quickly reading back through the thread again, if I am reading things correctly you have managed to design things such that you can put both types of connectors and have 1 universal board that can be swapped between both G3 Blue and White's as well as Sawtooth's (Sawteeth...

Im just wondering does this need any special hardware to use? say if you want to fit one to a machine that did not come with optioned with a modem in the first place, (or a machine that you removed the modem from for giggles years ago *looks at my sawtooth* ) I know the connector on the...

Quick question, regarding this has anyone tried this with an an actual PPC740L as per the thread title? I ask because the only refrence to what G3 740 CPU has been used is this comment from a few years back but if one checks the datahseets, only the PPC740L supports a 32 bit 60x databus, the...

Cache is indeed 3.3V on these cards sadly, I say, sadly, as it means the 7410 cannot be used on these boards, which is a shame, as not only is the 7410 a bit easier to acquire/work with (a 7400 you pretty much have to buy an old Apple CPU card to harvest it off of, and then faff about reballing...

actually ignore me there slightly! I just checked Mac tracker and I see they where selling the 631 into July 1995! did not realise they where selling 68K macs so late! at the same time you could get a 631 you could get a PCI based 9500!

I think so, if I am reading things right its got a date code of 11th week 1995, I wonder what its story is, given its still a 68LC040, and not something like an upgrade to a full fat 68040, neat find :)

thats very curious! this reminds me my PowerMac G4 Dual 1Ghz Quicksilver, who's L3 cache will not show up for love-nor-money, (I have been meaning to investigate that one further) unless for whatever reason PowerLogix did not use standard Apple CPU descriptor methods*, then it should just work...

interesting, and is there anything in the diagnostics tab?