VIA - Versatile Interface Adapter for Commodore VIC20, PET, CBM, SX64, 1540, 1541, 1541 II, 2040, 2031, 8050. Also for Apple III, Apple Macintosh, Oric-1, Oric Atmos, Acorn BBC Micro, GCE/MB Vectrex
- MOS/CSG/Rockwell/Synertek 6522
- different manufacturers
(Illustration similar)