PC-Retro Design Files ( IBM 5150 Clone )

[mmruzek]

Hello, I've decided to put the design files for the PC-Retro into the public domain. The PC-Retro is a faithful reproduction of the original IBM 5150. My business MTM Scientific, Inc sold kits to build this motherboard starting in 2012. Over time it has become increasingly difficult to source authentic parts at a reasonable price.

PC-Retro IBM Clone

Here is a link to a zip file containing all the information for the PC-Retro, including the Gerber files. I would enjoy seeing what people do with these files, and how they might be used going forward. I want to also extend thanks to the VCF forum for all the assistance they have given me on this project over the years. Have fun!

Michael

http://www.mtmscientific.com/pcretro.zip

 

[Hak Foo]

Thank you for this contribution. I will admit to looking longingly and not buying one when it was announced, but I admired the commitment to accuracy.

This seems like it could be a solid resource for debugging real 5150 mainboards-- it's probably easier to "walk" some parts of the PCB in KiCAD than to try to trace it on a traditional schematic document.

 

[sergioag]

Hi @mmruzek. I had the privilege of buying the kit from you a couple of years ago and I'm still fully using it. I really appreciate this contribution to the community!

 

[syzygy]

Thanks for the contribution and that is a really cool site!

 

[wrljet]

Is it my imagination, or in the picture, does RN2 have a 4264 DRAM in the socket?

 

[mmruzek]

Is it my imagination, or in the picture, does RN2 have a 4264 DRAM in the socket?

Yes it does! I must have filled that empty resistor network socket with whatever I had laying around to take the photo, while waiting for parts to arrive. Good catch!

 

[wrljet]

I don't see the delay lines either, but the picture isn't super high resolution.

 

[modem7]

I don't see the delay lines either, but the picture isn't super high resolution.

As for TD2, the design substitutes a resistor in place of {TD2 + R11 + R12}, like as what was implemented early in the production life of the IBM 5160. Comparison shown at [here].

 

[wrljet]

As for TD2, the design substitutes a resistor in place of {TD2 + R11 + R12}, like as what was implemented early in the production life of the IBM 5160. Comparison shown at [here].

Ahh

 

[modem7]

I don't see the delay lines either, but the picture isn't super high resolution.

As for TD2, the design substitutes a resistor in place of {TD2 + R11 + R12}, like as what was implemented early in the production life of the IBM 5160. Comparison shown at [here].

According to the 'IBM PC 5150 64-256kB System Board #1' photo at [here], some IBM 5150 motherboards are in scope too.

 

[mmruzek]

Hi, Since the PC-Retro design files were published here last Spring I have had a few people tell me they needed the attached library file to view the schematics in Kicad. I am attaching it here for anyone that may need it going forward. I should also mention that I have managed to cobble together a few more PC-Retro Kits, and they are available at my website over at MTM Scientific, Inc. Thanks! Michael

 

[ajacocks]

Very nice @mmruzek !

I very much enjoyed building the kit that I bought from you a several years ago. It’s very cool of you to publish this.

- Alex

 

[RUBEN]

You could change the eight RAM memory chips for a single chip

 

[modem7]

You could change the eight RAM memory chips for a single chip

That would violate the intention of the PC-Retro, which is to be a "a faithful reproduction of the classic IBM PC 5150 motherboard from 1982.'

 

[RUBEN]

I already know but could it be done in theory????

 

[RUBEN]

How do I add the KiCad library to see the schematics?

 

[RUBEN]

For the BIOS can use a 2764????

 

[modem7]

For the BIOS can use a 2764????

Only if an adapter is used. See [here].

 

[RUBEN]

And is there a chip that can be put in the BIOS socket without an adapter?

 

[modem7]

And is there a chip that can be put in the BIOS socket without an adapter?

OPTIONS #1, #2, and #3 of the web page that I pointed you to.