I thought they just brought over the microprocessors from General Instruments. The datecode on the package looks like 8826. http://en.wikipedia.org/wiki/AY-3-8912 A Programmable Sound Generator (PSG) chip manufactured by General Instruments, used in various 1980s home microcomputers including the Sinclair ZX Spectrum 128, the Timex Sinclair TS2068 and the Amstrad CPC 464, 664 and 6128. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3817617299 3 pieces of MICROCHIP Sound IC AY-3-8912. These IC's are a must for Arcade Game Repairs and are perfect for a Repair Shop / School / Hobbyist. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body