4K ROM: Display Routine Authors Publication Syntax Publication Details Volume: 2 Issue: 8 Date August 1981 Pages 6-7 Read the article See all articles from Syntax/Syntax ZX80 v2 n8 DISPLAY begins the 4K ROM’s input/output module at 013Ch, or 316d. Products Downloadable Media Related Articles Tags Syntax, 1981, Reference, ZX80 People No people associated with this content.