you are right, sorry about that. modified dosbox from http://home.arcor.de/h-a-l-9000/ salutations

just use porttalk drivers from: http://www.beyondlogic.org/porttalk/porttalk.htm run "allowio.exe dosbox.exe /a" with porttalk.sys copied to \windows\system32\drivers. worked perfectly with my dongle based program (puls).