I ran into this question a few times and couldn't find any acceptable answer:

Once I was trying to reverse engineer a card that had chips like Intel's 8255 PPI, 8226 bus drivers and some other ICs. I ended up redrawing the needed part of the schematic on a sheet of paper and later forgot about this question.

Now I am slowly working on my homebrew computer project using 8080 CPU and have some further plans for a board with 8086/8087 or 80188 in my head. Once again I can't find some of the components I want to use in any of the libraries on the internet.

Knowing that retro computer builders and various tinkerers have to have some way to draw their schematics, I wonder whether I am bad at searching or does nobody use KiCad for this job?

  • 1
    Some of the KiCad library searches point to broken sites. Renie Marquet's Kicad Area claims to have a lot of older Intel components. I haven't tested them, so only including this is a comment, not an answer.
    – scruss
    Commented Sep 17, 2016 at 18:46

1 Answer 1


People do use KiCad for this job! The S100 Computers group have created many, many boards using KiCad (included in the list here) and provide the KiCad files used to create each of them. Including the relevant libraries. These will be in 2013 format, but you can convert them to a later format if neccesary.

For 8086 components, S100 Computers - 8086 CPU Board offers these KiCad files. I can't see any 8087 or 80118 boards on the list, but many of the components will be the same (I assume).

I couldn't find much else online, save a few tutorials on how to create your own components. If you know enough about the components you need, you could try creating them yourself.

  • 4
    If you do end up making your own components, please share the library with us!
    – wizzwizz4
    Commented Sep 24, 2016 at 10:59
  • I found some components at the link scruss posted and I guess I'll end up making the remaining ones myself. I find the component management part of KiCad a bit terrible. Maybe I should start collecting a library with old parts for reverse engineering and building retro computers... Or is that a little bit pointless?
    – Algimantas
    Commented Sep 25, 2016 at 12:12
  • @Algimantas Not pointless, no. Did you end up making it?
    – wizzwizz4
    Commented Jun 14, 2019 at 20:25

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