Ogischer: Nice found. Thanks for sharing these two keyboard. I have been searching for them 4days ago since I found the link from DT forum who shared the ebay link.
Your keyboard isn't called NCD N-97 Linear. They're not the same type of keyboard.
It should be Liberty Electronics, Inc. made keyboard, MODEL RT102. It's rare to see the RT-102 on net.
And your second keyboard is "Televideo 965 Enhanced PC keyboard" with (Linear)White two laugh eyes.
It might be made in 1990 and shown in the back of PCB if you can assemble it.
I'm wondering what switch under the "setup" keycap....
Could you show me the switches under the key of Break lock, Caps lock, Print screen and space bar?(I said these two keyboard)
It should has different variants on these two keyboard.
I have the Televideo keyboard series manual book and three types keyboard. Its said what pinout it has. I"ll post it to you very soon.
I haven't the experience of making the converter, so hope you can try it and teach me how to do this.
Looking for you reply soon.=]