I was looking around to see if I could learn from the code that defines the CPLD on the REX. I found a link to:
http://www.club100.org/memfiles/index.php?action=downloadfile&filename=rex_0110_April24%202011_no%20RST.jed&directory=Steve%20Adolph/REX/info&; but that now gives an Internal Server Error: Looks like there’s a problem with this site http://www.club100.org/memfiles/index.php?action=downloadfile&filename=rex_0110_April24 2011_no RST.jed&directory=Steve Adolph/REX/info& might have a temporary problem or it could have moved. Error code: 500 Internal Server Error - The site could be temporarily unavailable or too busy. Try again in a few moments. The link worked once upon a time, according to the Wayback Machine: https://web.archive.org/web/20171220214314/http://www.club100.org/memfiles/index.php?action=downloadfile&filename=rex_0110_April24+2011_no+RST.jed&directory=Steve+Adolph/REX/info&; Any ideas? —b9
