Z80 Extra Op Codes Authors Publication Synapse Pub Details Volume: 3 Issue: 4 & 5 Date April & May 1985 Pages 13 Read the article See all articles from Synapse v3 n4 & 5 Op codes for machine language programmers. Reprinted from T-S Horizons n12. Products Downloadable Media Related Articles Tags Synapse, Machine language programming, TS 1000, TS 2068 People No people associated with this content.