DEC VT100/220 line wrapping semantics sought

Mattias Engdegård mattiase at
Tue Feb 28 09:21:41 CST 2017

Some time ago I solicited help investigating how DEC VT terminals handle line wrapping, mainly for the purpose of accurate emulation. Having received assistance from very kind people -- many thanks! -- some of the findings have now been summarised at, in case it would be of help to anyone else.

Data for VT100, VT220 and VT510 have been collected, as well as several emulators ( If anyone has access to other working terminals, VT3xx/VT4xx in particular, I'd be most grateful if you would take a few minutes to run the test program.

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