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LightBulbFun

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figured you lot here would be interested in seeing what I have been futzing with over the past day or 2

which is me putting together a DIY intel DTK of sorts :) (something I have been wanting to do for many years ago, I actually technically started this project many years ago when I spotted the same make/model of "Orion" ADD2 DVI card as used in the DTK on ebay so I jumped on it even tho I had nothing to use it in at the time)

it was mentioned many years ago in this thread on the 68kMLA https://68kmla.org/forums/topic/25304-apple-development-transition-kit/

which family of intel boards the semi-custom Apple intel DTK board was based off (which you can see in that all the boards inc the DTK share the same EV91510A string in the boot rom version)

so I figured recently id finally track down and buy one of those retail intel boards and have a play with the idea of putting together my own DTK, since id love a real one but they are very hard to find today sadly

so I found and bought nice cheap intel D915GEV motherboard, (complete with Pentium 4 540J, heatsink and RAM) and indeed I was successful in booting a stock Apple DTK 10.4.3 build of tiger on it :) this is a completely stock install, all I did was manually patch out the TPM related checks since I obviously dont have that, but otherwise completely untouched


in the next day or 2 I hope to play with 10.4.1 and see if I can get that to boot with the stock DTK install DVD/ISO's and minimal amount of patching


1610407795490.png



it is interesting to note that the CPU reporting in 10.4.3 as "ADP2,1" happens on a real DTK too, I do wonder why exactly that is,

another interesting thing to note is how OS X miss reports the DDR2 RAM as DDR1 again a bug on the real DTK, but interestingly when I updated this motherboards BIOS from version 401 to its latest, version 482 OS X correctly reported the RAM as DDR2 as seen in the GB2 result above, so it will be interesting to see what 10.4.1 reports since, 10.4.1 technically predates any DDR2 mac (the DTK looks to be based around BIOS version 450)

I would also love to get my hands on a BIOS dump of a real DTK to play with, as its also reported in the 68kMLA post you can flash the DTK BIOS onto the family of intel motherboards the DTK Board is based off of


BTW as a side note I can confirm you can get intel GMA 900 working in 10.6.8 Snow Leopard LOL (this is booting with the stock kernel thanks to CPUID spoofing with the OpenCore Boot loader, pretty nifty)

1610408795873.png
 

LightBulbFun

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Awesome. Now load it up with a 3.8 GHz P4 670, 4 GB RAM and an SSD :cool:

Thanks :)

sadly those higher clocked P4's are surprisingly expensive! even a 3.6Ghz Pentium 4 660 which is what the DTK used is like £15 on ebay, bit more then im willing to spend on an old P4!

but yeah I would like to get a Pentium 4 660 (or at least a Prescott 2M) CPU some day to make it more authentic

I did try 4GB in it briefly but the i915 chipset is like the i945 chipset in that only 3GB was usable so I just installed 2x1GB and 2x512MB as my other 1GB/2GB sticks are needed elsewhere

if I end up with more 1GB sticks that work with this mobo I will max out it just for the sake of it tho :)

I am however booting from a fast 16GB sandisk CF card if that counts as an SSD LOL, OS X boots very quickly from it

speaking of pleased to report 10.4.1 also works perfectly with only the TPM patches needed :)

1610463617863.png


it does detect the RAM as DDR2 no problem interestingly, but its worth noting the Pentium 4 CPU string in about this mac, is just the CPUID string from the CPU, not the formatted "Pentium 4" string you see on a real DTK

I wonder what I need to do to get that formatted string, is it an SMBIOS flag in the DTK's BIOS (like how the CPU type in about this mac is set on a real intel mac) or is it down to the CPU itself, (do I need a pentium 4 660 or other such presscot-2M CPU for it)

(for those who dont know the 10.4.1, to I think 10.4.5 About this Mac will just display the CPUID string of whatever CPU its running on, if its not told to display a specific string like "Core Duo")
 
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Amethyst1

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I did try 4GB in it briefly but the i915 chipset is like the i945 chipset in that only 3GB was usable so I just installed 2x1GB and 2x512MB as my other 1GB/2GB sticks are needed elsewhere
Ah, I see.

I am however booting from a fast 16GB sandisk CF card if that counts as an SSD LOL, OS X boots very quickly from it
It does in my book :)

(for those who dont know the 10.4.1, to I think 10.4.5
aboutMiniCore2Duo.gif


I think 10.4.7 8K1079 (Mac Pro/Server) might have been the first build to show a nice name for a C2D and unknown/ placeholder if it doesn't know the CPU. Gotta check this on my Celeron-ified Mac mini :cool:
 
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LightBulbFun

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Gotta check this on my Celeron-ified Mac mini :cool:
that will most likely return Core Solo, because thats the CPU type the Mac's EFI will most likely for report a single core Yonah CPU regardless of what brand (Celeron, Pentium or Core Solo etc) it is etc


the one im really curious about on that front, is the Celeron 445, I managed to get my mits on one recently, its a strange single core intel Core 2 based Celeron with an LGA 771 socket!

1610488117662.png



(its quite amusing how none of the usual utilities have any idea what the CPU is :) and it is a very obscure CPU im only the 2nd person to ever validate one on CPU-Zs online validation service)


1610488149973.png


and so I do very much plan to install it into my MacPro1,1 to see what happens :)

and im really curious what the Mac will report its CPU type as to OS X, will it be Core 2 Solo or Single Core intel Xeon

neither of which was used in any shipping Mac but that About this Mac does have SMBIOS codes for most curiously...
 
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Amethyst1

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that will most likely return Core Solo,
It does on 10.4.11 and 10.6.8 but I'm curious to see what 10.4.5/6/7 do.

the one im really curious about on that front, is the Celeron 445, I managed to get my mits on one recently,
Awesome. Can't wait to see this in a Mac Pro :D

and im really curious what the Mac will report its CPU type as to OS X, will it be Core 2 Solo or Single Core intel Xeon
That's what I'm wondering with regards to my Celeron M 520 too - hoping I'll get Core 2 Solo. Then I'll try to slap my eGPU and Yosemite on it for the lols.
 
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LightBulbFun

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It does on 10.4.11 and 10.6.8 but I'm curious to see what 10.4.5/6/7 do.


Awesome. Can't wait to see this in a Mac Pro :D


That's what I'm wondering with regards to my Celeron M 520 too - hoping I'll get Core 2 Solo. Then I'll try to slap my eGPU and Yosemite on it for the lols.

yeah that will be quite interesting to see what that CPU does

im also curious if with these 533Mhz FSB CPU's if you will have any TSC issues as reported here when a U7700 was tested in a Mac Mini https://www.journaldulapin.com/2017/01/11/mac-mini-core-2-duo/


speaking of about this mac and what it displays it is worth noting that 10.4.1 does have some interesting built in ones for when a CPU has no CPUID name string

for example it has one for Pentium III (and there are others going back to Pentium II Pentium and 486 LOL)

1610552028699.png


if I change my Vendor from GenuineIntel to AuthenticAMD I get OS X reporting an AMD Duron LOL

1610552062687.png


no other Vendor ID's work (I just get a very early Kernel panic) except for most interestingly "Geode by NSC" works which gives me

1610552127781.png


I have to wonder if this is a left over from the OLPC since I know Steve Jobs offered OS X for that project
 

Amethyst1

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I have to wonder if this is a left over from the OLPC since I know Steve Jobs offered OS X for that project
I once had a thin client that used the same SoC as the OLPC XO-1 but it never occurred to me to try OS X on it - very probably wouldn't have worked due to missing instructions anyway.
 
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LightBulbFun

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I once had a thin client that used the same SoC as the OLPC XO-1 but it never occurred to me to try OS X on it - very probably wouldn't have worked due to missing instructions anyway.

Yeah for the above shots I used QEMU, I specified the Pentium 3 CPU option then manually specified SSE2 and SSE3 so OS X would boot (and then changed the CPUID vendor string to the various different ones there are :) https://en.wikipedia.org/wiki/CPUID )

but you could probably run Darwin on it or such :) I have an old Athlon XP machine here I might try throw Darwin 8.01 at for giggles at some point
 
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LightBulbFun

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I once had a thin client that used the same SoC as the OLPC XO-1 but it never occurred to me to try OS X on it - very probably wouldn't have worked due to missing instructions anyway.

here we go! LOL
1610575526468.png


switched the base CPU emulation to a Pentium 1 (plus the base amount of extra instructions for OS X to boot) with the CPUID vendor string of as above "Geode by NSC" and bam

really curious that they included formatted names like this given OS X wont even remotely boot on actual hardware like this (keep in mind its OS X generating this name not QEMU or such since the base CPU im emulating has no such string)

I must find where they are kept and see if I can find them and see what others are there (I know "Unknown AMD Athlon" and "Unknown AMD" are 2 others)

it is interesting how OS X crashes on all other CPUID vendor strings except for GenuineIntel, AuthenticAMD and Geode By NSC, as the are mentioned in the source code otherwise https://opensource.apple.com/source/xnu/xnu-792.25.20/osfmk/i386/cpuid.h.auto.html
(and I think Darwin will boot on those other Cryix etc CPUs) so I really do wonder if this is something left over from the OLPC thing or not...

but going back around to the DTK this is what I mean by there is a Formatted "Pentium 4" string just not sure what I need to do to trigger it on an actual Pentium 4 LOL
 

Wowfunhappy

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Excuse me for being dumb—why didn’t you have to do any of the normal Hackintosh things? How is it booting an EFI os? No fakeSMC?
 

Anonymous Freak

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Funny side story - a friend of mine was the product maintenance lead for that motherboard at Intel. He didn't know it was for Apple until years later when I asked him if he could look up the product number and find inside information for me after seeing someone post close-up pictures of it online. (probably 2010-2012ish.)

"Huh, yeah, that was my product, what do you want to know?"

"Woah, you worked on the Apple Developer Transition Kit?"

"The what now? ... That board was for Apple? I always assumed it was for a custom form factor Dell or Gateway or something..."
 

LightBulbFun

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Funny side story - a friend of mine was the product maintenance lead for that motherboard at Intel. He didn't know it was for Apple until years later when I asked him if he could look up the product number and find inside information for me after seeing someone post close-up pictures of it online. (probably 2010-2012ish.)

"Huh, yeah, that was my product, what do you want to know?"

"Woah, you worked on the Apple Developer Transition Kit?"

"The what now? ... That board was for Apple? I always assumed it was for a custom form factor Dell or Gateway or something..."
Yeah I remember you mentioning that somewhere else on the forum or the internet, always quite amusing :)

so did you managed to find anything extra out in the end?

im not surprised your friend knew nothing about the Apple connection, Apple is well known for how secretive they are and intel would NOT want to screw it up!


(I would love to get my mits on a real DTK, or just a DTK mobo or even just a BIOS dump to play with!)
 

Dandu

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Jan 23, 2009
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Hey, i have a DTK and a D915GEV with TPM. Do you know is there a way to migrate the key ? (i d'ont know the type of key).
 

LightBulbFun

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Hey, i have a DTK and a D915GEV with TPM. Do you know is there a way to migrate the key ? (i d'ont know the type of key).
Hey! nice to see your still around here :)

im not sure on the TPM front sadly

if it is possible to clone copy or migrate the key

but there might be something, these 2 PDF's might be worth a read



esp as they do make mention of the recovery and restore of a TPM key


I wonder what the DTK's TPM key comprises of exactly,

I know the SMC key that OS X checks to see if its booting on an actual mac is ourhardworkbythesewordsguardedpleasedontsteal(c)applecomputerinc

have to wonder if the DTK is the same or not
 

RogerWilco6502

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My apologies if this has already been linked and for bringing back this rather old thread, but I am interested in trying out the Intel distro for 10.4.3 on my ThinkPad T42p and was wondering if someone could direct me to where to find it. Thank you! :)
 
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