coding

  • Learning VHDL With Robin Debreuil

    (And the answer, for five MILLION dollars….contestant one?) Here’s an excellent article we found over at Robin Debreuil’s blog concerning a number of VHDL concepts and implementation.  It’s a great read, and we thought it’d be cool to post here for any Papilio owners and/ or VHDL coders to take a look at!  Robin totally attacks…

  • Virtual 7-Segment Display Generator for the Papilio Arcade

      Here’s some more user-contributed code from reader Alex, this time on making a virtual 7-segment display on the Papilio Arcade in VHDL. The 7-segment display is outputted to VGA, and can be used to superimpose alphanumeric characters on top of any video already coming out on VGA.  The position, size, and color of the…

  • Translating Verilog to VHDL for Galaxian

    A little while back, we received some user contributed code from reader and Papilio user Alex, for converting Verilog code to VHDL.  The article illustrates the conversion for the game Galaxian.  If you’re learning VHDL, or are interested in Verilog to VHDL conversion, Alex’s article lays it  out nicely for you with examples from Katsumi Degawa’s Galaxian FPGA project. With…

  • VHDL Communication With A PS/ 2 Keyboard

    Thanks to reader Hamster, who submitted this peachy Wiki page!  Hamster has written some VHDL code for communicating with a PS/ 2 keyboard that can be found on the wiki!  Useful stuff: “It has lots of features: It does full start bit, stopbit and parity check … deglitches the signals, by requiring a state change of longer than…