In SX Microcontrollers, SX/B Compiler and SX-Key Tool, phipi wrote: Oops! My mistake. I had confused polarity with open-collector. So, instead of N9600 and N1200, OT9600 and OT1200 [i]should[/i] be the correct forms. Have you tried putting them directly into the SEROUT statements, rather than using "baud"? Also, a simpler program than SoundPAL_Repertoire might be a better place to start. Here's a minimal program for the BS2 that plays "Charge!" Try modifying it for SX/B and move on from there. [code] ' {$STAMP BS2} ' {$PBASIC 2.5} iopin PIN 15 DO : LOOP UNTIL iopin SEROUT iopin, $8000 + 84, ["=", 1, 64, 0, "!"] [/code] -Phil ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=230277#m231297 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)