Additional logic to implement shifted keys.
Using Extra Keys on Big Keyboard PublicationSyntaxPub DetailsSyntax/Syntax ZX80 v2 n3Volume: 2 Issue: 3DateMarch 1981Pages7Read the articleSee all articles from Syntax/Syntax ZX80 v2 n3 Additional logic to implement shifted keys. TagsSyntax 1981 Type-in program ZX80