Hello, > I've been looking at the Coupe Technical Manual and noticed that > the Sound chip ports are write only. So how did the demos show > the sound volumes?
Yes, the SAA1099 is write only. To get fancy volume bars and frequency bars etc in demos, you just keep a note of the values that you OUT in your music routines to the soundchip's volume and frequency registers. I'm not sure if the compiled e-tracker player stores the values for you to check later (I have a vague recollection it does, but I may well be wrong!), or if you have to modify the player to store the values yourself. It's not something i've had to do. > Comet problem... Not a problem I've seen before... Colin ===== Quazar : Hardware, Software, Spares and Repairs for the Sam Coupe 1995-2007 - Celebrating 12 Years of developing for the Sam Coupe Website: http://www.samcoupe.com/