Circuit to invert ZX81 video signal, provides white on black.
ZX81 Background Reverse AuthorsF. W. PickenPublicationElectronics Today InternationalPub DetailsVolume: 7 Issue: 11DateNovember 1983Pages76Read the article Circuit to invert ZX81 video signal, provides white on black. Tags1983 Hardware project ZX81 PeopleF. W. Picken