Yes, I had one of those Toshiba 3100, they were more properly "transportable" or "luggable only", as they had no battery. And notwithstanding that, they anyway

Yes, I had one of those Toshiba 3100, they were more properly "transportable" or "luggable only", as they had no battery. And notwithstanding that, they anyway weighted some 5 ot 6 Kg (but they were tough and had a "proper" keyboard). It is not clear if the Grid Compass was EL or plasma, here: http://www.old-computers.com/museum/computer.asp?c=900 http://www.old-computers.com/museum/computer.asp?c=900 they talk of amber plasma and surely the photo here: https://history-computer.com/ModernComputer/Personal/Grid.html https://history-computer.com/ModernComputer/Personal/Grid.ht... https://history-computer.com/ModernComputer/Personal/images/Grid1101.jpg https://history-computer.com/ModernComputer/Personal/images/... looks a lot like amber plasma (as the Toshiba 3100 and other "portables" of around that time).