I use two programs, Layo1 and Orcad (both DOS)
First I have to draw the schematic into Orcad and "connect" it to Layo1.
When I let Layo1 do autoroute, the PCB looks like a footbalfeeld.
I put the components on there places and draw the lines.
When I draw a wrong line, Layo1 tell me it's wrong.
If I draw all the lines, Layo1 can optimize the PCB.

When you look around, the Nyemi-pcb is allready be done.
I don't where I have see this schematic befor, but its not new.

http://veyrat.perso.neuf.fr/allumage_electronique.htm
http://www.rcuniverse.com/forum/m_43...0/key_/tm.htm#

Please wait some time.....I'm not ready yet with the CDI's [8D]