VOGONS


First post, by RayeR

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Hi, just an idea...
I got a SL28Q CPU from an old Compaq Armada MB (see here at the bottom of page) http://www.cpu-collection.de/?l0=co&l1=Intel&l2=Pentium+MMX
Not a module but just a bare CPU that was directly soldered on MB. It's very fine pitch quad SMD chip that is pretty useless itself but I'm thinking about reusing it in socket 7 via some interposer board. I know there exist some chinese fake MMX 300MHz CPU that already did the job but seems to be rare. I'd like to know first if someone else didn't try to replicate it with his own interposer. If not, maybe I could design it myself, hoping cheap 4-layer JLCPCB board would be enough to route it all out...

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 4GB DDR3, 128GB SSD, GTX670(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo

Reply 1 of 34, by Sphere478

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I made a thread about this a while back, new golden tigers or something rather. Can’t find it.

In any case, soldering those film roll chips would be an absolute nightmare.

I’m not sure if the full laptop module could be adapted either. The connections here are very small. Would take a lot of skill and special equipment to make.

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 2 of 34, by TrashPanda

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Sphere478 wrote on 2022-09-12, 21:19:

I made a thread about this a while back, new golden tigers or something rather. Can’t find it.

In any case, soldering those film roll chips would be an absolute nightmare.

I’m not sure if the full laptop module could be adapted either. The connections here are very small. Would take a lot of skill and special equipment to make.

And an exceptionally patient and calm person ...I dont know of such an individual ....do you ?

Oh noes, the cap let the shmooo out 😁

Reply 3 of 34, by Sphere478

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Just trying to fix pins on the intel ones I have is very difficult and requires a microscope, let alone building one. Maybe with more skill than I and special equipment like a microscope soldering station but it is beyond the ability of a typical enthusiast it seems

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 4 of 34, by RayeR

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I belive that soldering could be done with good flux and some magnifier, I can use Mantis 10x stereo scope at work. Datasheet drawing shows the pin width is 100um, 250um pitch - JLCPCB should make it. If the chip is the same as used in PGA package then wiring should be straightforward (as bonding in the PGA chip)...
A macro here:

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Last edited by RayeR on 2022-09-13, 00:27. Edited 1 time in total.

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 4GB DDR3, 128GB SSD, GTX670(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo

Reply 5 of 34, by Sphere478

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Do you have a pinout of the film roll package?

Pinouts of the pga is easy enough to find.

To answer your question, I could probably design one but would need a datasheet for the film roll packages.

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 6 of 34, by Sphere478

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Intel made these, I have two of them.

We just have to replicate them.

Can’t do it without the film chip datasheet though.

Attachments

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 7 of 34, by RayeR

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Yes I have a datasheet titled "MOBILE PENTIUM® PROCESSOR WITH MMX™ TECHNOLOGY" that covers 133-166MHz with both packages.

Adapter above - pretty simple, I guess the same is in chinese gold CPU. Maybe a version could be made with integrated LDO for MBs without low-enough VRM but there would be cooling problem, LDO would need to be placed on some side extending the interposer and could cause spacing issues... so rather do VRM mod on MB and keep interposer simple...
As a source of pins I could use some useless Celeron PPGA370...
just thinking...

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 4GB DDR3, 128GB SSD, GTX670(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo

Reply 8 of 34, by TrashPanda

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RayeR wrote on 2022-09-13, 00:31:
Yes I have a datasheet titled "MOBILE PENTIUM® PROCESSOR WITH MMX™ TECHNOLOGY" that covers 133-166MHz with both packages. […]
Show full quote

Yes I have a datasheet titled "MOBILE PENTIUM® PROCESSOR WITH MMX™ TECHNOLOGY" that covers 133-166MHz with both packages.

Adapter above - pretty simple, I guess the same is in chinese gold CPU. Maybe a version could be made with integrated LDO for MBs without low-enough VRM but there would be cooling problem, LDO would need to be placed on some side extending the interposer and could cause spacing issues... so rather do VRM mod on MB and keep interposer simple...
As a source of pins I could use some useless Celeron PPGA370...
just thinking...

Are the pin outs the same between non tilly MMX and Tillamook ? Didnt Intel add more pin outs that changed how Tillamook interacts with L2 cache?

Oh noes, the cap let the shmooo out 😁

Reply 9 of 34, by RayeR

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Dunno, need to compare. I found a better datasheet covering 166-266MHz
https://manualzz.com/doc/19758173/mobile-pent … 4-0-gaNycGzNBuU

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 4GB DDR3, 128GB SSD, GTX670(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo

Reply 10 of 34, by TrashPanda

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RayeR wrote on 2022-09-13, 01:20:

Dunno, need to compare. I found a better datasheet covering 166-266MHz
https://manualzz.com/doc/19758173/mobile-pent … 4-0-gaNycGzNBuU

I have a feeling you may need to source a datasheet for Tillamook specifically, from other threads here on Vogons there are a number of pin changes between Tilamook and earlier MMX Pentiums aside from lower voltages.

Oh noes, the cap let the shmooo out 😁

Reply 11 of 34, by Sphere478

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RayeR wrote on 2022-09-13, 00:31:
Yes I have a datasheet titled "MOBILE PENTIUM® PROCESSOR WITH MMX™ TECHNOLOGY" that covers 133-166MHz with both packages. […]
Show full quote

Yes I have a datasheet titled "MOBILE PENTIUM® PROCESSOR WITH MMX™ TECHNOLOGY" that covers 133-166MHz with both packages.

Adapter above - pretty simple, I guess the same is in chinese gold CPU. Maybe a version could be made with integrated LDO for MBs without low-enough VRM but there would be cooling problem, LDO would need to be placed on some side extending the interposer and could cause spacing issues... so rather do VRM mod on MB and keep interposer simple...
As a source of pins I could use some useless Celeron PPGA370...
just thinking...

I can’t trust that the p55c variant is the same as the tillamook package. We need to find the tillamook datasheet.

There are some tillamook mods I can incorporate, but adding a vrm (overdrive) seems unnecessary. There is already a interposer that can do this.

RayeR wrote on 2022-09-13, 01:20:

Dunno, need to compare. I found a better datasheet covering 166-266MHz
https://manualzz.com/doc/19758173/mobile-pent … 4-0-gaNycGzNBuU

That looks like the right one.

Can someone re host it here? For future searchers (I’m on my phone)

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 12 of 34, by Sphere478

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Socket 5-7-SS7 (Processor Imposter) Tweaker For Dual Socket Motherboards (released)

I’ll probably use this as a edge cut template,

Probably going to have to build the smd footprint from the datasheet

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 13 of 34, by RayeR

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I could create footprints in Altium quite easily via package generator, then careful looking at pin tables will be needed to make netlist directly or sch. parts...

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 4GB DDR3, 128GB SSD, GTX670(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo

Reply 14 of 34, by kaputnik

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RayeR wrote on 2022-09-13, 00:24:

I belive that soldering could be done with good flux and some magnifier, I can use Mantis 10x stereo scope at work. Datasheet drawing shows the pin width is 100um, 250um pitch - JLCPCB should make it. If the chip is the same as used in PGA package then wiring should be straightforward (as bonding in the PGA chip)...
A macro here:

Got boring white walls in my computer corner. Would it be possible to upload this pic in some insane resolution, suitable for printing? 😀

Reply 15 of 34, by Sphere478

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RayeR wrote on 2022-09-13, 11:46:

I could create footprints in Altium quite easily via package generator, then careful looking at pin tables will be needed to make netlist directly or sch. parts...

Can that import to kicad? If I am to help, (am I?) it is what I will use. But if you are gonna do it all yourself, I will watch with interest 😀

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 16 of 34, by RayeR

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kaputnik wrote on 2022-09-13, 12:08:

Got boring white walls in my computer corner. Would it be possible to upload this pic in some insane resolution, suitable for printing? 😀

Here's best I have, I used Pentax 17-70/f4 lens that works as good macro lens allowing focus from 8-10cm distance.
http://rayer.g6.cz/1tmp/intel_Pentium_233-66_ … MX_Mobile-a.jpg
http://rayer.g6.cz/1tmp/intel_Pentium_233-66_ … MX_Mobile-b.jpg

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 4GB DDR3, 128GB SSD, GTX670(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo

Reply 17 of 34, by Sphere478

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RayeR wrote on 2022-09-15, 01:11:
Here's best I have, I used Pentax 17-70/f4 lens that works as good macro lens allowing focus from 8-10cm distance. http://rayer. […]
Show full quote
kaputnik wrote on 2022-09-13, 12:08:

Got boring white walls in my computer corner. Would it be possible to upload this pic in some insane resolution, suitable for printing? 😀

Here's best I have, I used Pentax 17-70/f4 lens that works as good macro lens allowing focus from 8-10cm distance.
http://rayer.g6.cz/1tmp/intel_Pentium_233-66_ … MX_Mobile-a.jpg
http://rayer.g6.cz/1tmp/intel_Pentium_233-66_ … MX_Mobile-b.jpg

For those who aren’t holding one of these in your hand it is positively nuts how small those legs/pins are. Best of luck to the poor soul that tries to assemble one of these

Sphere's PCB projects.
-
Sphere’s socket 5/7 cpu collection.
-
SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)

Reply 18 of 34, by kaputnik

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RayeR wrote on 2022-09-15, 01:11:
Here's best I have, I used Pentax 17-70/f4 lens that works as good macro lens allowing focus from 8-10cm distance. http://rayer. […]
Show full quote
kaputnik wrote on 2022-09-13, 12:08:

Got boring white walls in my computer corner. Would it be possible to upload this pic in some insane resolution, suitable for printing? 😀

Here's best I have, I used Pentax 17-70/f4 lens that works as good macro lens allowing focus from 8-10cm distance.
http://rayer.g6.cz/1tmp/intel_Pentium_233-66_ … MX_Mobile-a.jpg
http://rayer.g6.cz/1tmp/intel_Pentium_233-66_ … MX_Mobile-b.jpg

Thank you very much, really appreciate it 😀

Reply 19 of 34, by RayeR

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Footprints created, now boring part of filling the netlist...

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Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 4GB DDR3, 128GB SSD, GTX670(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo