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Comment by t0mek | Hacker News Reader

And if you have even older Mac (128/512/Plus) and want to use an almost modern PS/2 keyboard with it, please check my https://github.com/trekawek/mac-plus-ps2

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And if you have an obscure Canadian TV computer from 1982 and want to use a USB keyboard with it, check out my https://youtu.be/93LBVhSx8cs?si=bC8OW3SpWIIlsgNN

(I should really get around to taking that project beyond the prototype stage)

Seems like keyboard adapters are a popular thing around here.

Or if you have a Mac of that vintage and want to use its mouse on your modern PC, you can use my adapter: https://jfloren.net/b/2022/7/8/0

(I recommend against doing this except as a party trick, because these old mice were never intended to be used on a high-resolution screen)

What I would love is to be able to use modern laser mice with vintage PCs -- I have a Mac Plus which is a nightmare to use because those old ball mice are flippin' terrible.

I think you could fake the quadrature signals pretty easily. When I designed my laser mouse, I initially wanted to be able to reprogram the microcontroller to output USB, PS/2, quadrature, etc. but that got dropped so as to just get it out the door... but I think a USB->quadrature adapter would be pretty doable.

I have a 512ke and no keyboard, keep looking for ways to use a "modern" board on it instead if paying a good $ on Ebay for one. This is exactly what I was looking for, thank you.

Thank you for this! I am just about to fix the PSU on my Mac Plus 1MB and this might come in handy.

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