David Wilson wrote: > Until I lay my hands on a copy of the AY-8910 datasheet <http://tinyurl.com/g92j5> Regards, -- Mark McDougall, Engineer Virtual Logic Pty Ltd, <http://www.vl.com.au> 21-25 King St, Rockdale, 2216 Ph: +612-9599-3255 Fax: +612-9599-3266