Apple IIs also had inverse-video letters, and some had "MouseText" pseudographics used to simulate a Mac-like GUI in text mode.
I know that a couple of fonts from Kreative put these in the PUA and Nishiki-Teki follows their lead. On Mon, Mar 27, 2017 at 9:25 AM Charlotte Buff < irgendeinbenutzern...@gmail.com> wrote: > > It’s hard to say without knowing what the characters are. > > For the ZX80, the missing characters include five block elements (top and > bottom halfs of MEDIUM SHADE, as well as their inverse counterparts), and > inverse/negative squared variants of European digits and the following > symbols: " £ $ : ? ( ) - + * / = < > ; , . > Negative squared digits may be unifiable with negative circled digits. > > ATASCII includes inverse variants of box drawing characters. I have to > check whether some other pictographs are unifiable with existing characters. > > PETSCII includes some box drawings and vertical scan lines that are > probably not unifiable. > > Atari ST includes two simple pictographs that were used as graphical UI > elements. They look like a negative, low diagonal stroke and a negative > diamond respectively. It also has six characters that together form logos > which I wasn’t going to propose. > > TI calculators include a single character for a superscript minus 1. I > don’t have a lot of information available about this set at the moment. >