On Tue, Jan 6, 2026 at 8:57 AM Bill Degnan via cctalk <[email protected]> wrote: > good question. I have a CIT-101 which is the VT-101 clone. I never > tried swapping keyboards but it sure looks identical to any DEC > keyboard.
We had CIT-101 and CIT-101e terminals at work in the 80s/90s. They use the same type of 1/4" connector as a VT100 but are not cross-compatible. I still have a couple of CIT-101 terminals from those days but I packed the box of keyboards away when we moved and they haven't ever turned up (I do have a working CIT-101e w/keyboard and have brought one to VCF East and Midwest). They do look the same externally but don't generate any key events when tried. IIRC nothing breaks from connecting the wrong keyboard, but you just don't get key events. I do not know anything about the CIT-220 but at least by the VT220 era, the physical connection was just a pretty plain async serial link (not the bidirectional whatever the VT100 used). There are modern microcontroller adapters for VT220s. Seems like they might make a good starting point for a CIT-220 keyboard adapter. -ethan
