Well sorry if it is in violation of some rule or if I'm not in the correct section of the forum I wanted to share with friends PCBs my friend Claudio Henrique of Brazil that made PCBs from the Megadrive before it was only for him and today he sells the cartridge the mega drive with the recorder set at some international website designing it in this page's http://alvanista.com/tag/pcb-genesis when I see his project gave me more initiative to do the same
Program Eagle
https://www.youtube.com/watch?v=dB1aAbR_eSw