Upon reading http://www.breezer.demon.co.uk/spec/tech/ay-3-8912.html, I encountered the following: --- The AY-3-8910/8912 (and derivatives) has found its way into a variety of home computers and games consoles including the following: Sinclair ZX Spectrum 128/+2/+3 Amstrad CPC 464/664/6128 Mattel Intellivision BBC Micro Atari ST Sega Master System --- Well, it's true WRT the Speccy, the Ammy (I suppose you can't say that =) and the ST, but didn't we establish a while back that the BBC and Master System chip, the SN76489, while superficially similar, was a different construction. And as for the Intellivision, perhaps is it just due to the limited system in general, lack of space, or perhaps a slow driving clock, but with the sub- mediocre sound of the INTV, it seems like such a waste to employ a more adanced sound generator such as the AY, -- En ligne avec Thor 2.6a.