deskthority

And so, the news: the keyboard Model F XT arrived and I additionally bought a logic analyzer.
The assumption of ibmapc was confirmed – there are some problems with signals and synchronization for different types of keyboards.
The Converter is perfectly working with the keyboard Model F XT! And the ...

Why do you need the converter?

I temporarily use a keyboard with the AT/XT switch for tests, because I bought an original Model F XT keyboard on eBay. In the future, I will use Model F with this Converter, but for now the keyboard is in delivery.

I thank all those who responded.
I checked the connection between the motherboard and the Converter and found that there was poor ground contact. I additionally soldered all the connections.
Now the output signal is as follows:

https://i.ibb.co/dQJPqwd/K-AT2.jpg
At the output of the Converter AT ...

Hi!
I have an old IBM PC 5150 computer and an old XT mechanical keyboard (not a Model F, but another mechanical one running in XT mode). Everything works perfectly together.
I built a Converter from this theme on a layout board and tried connecting the XT keyboard to a modern computer. But the ...