I am Roy Rankin and I have been a Fedora packager since early 2009.
Currently I am a packager for gpsim, gputils, sdcc, gtk+extra and
denmo in Fedora.
I am also a developer and the de facto release manager for gpsim which
is a simulator for Microchip PIC devices.
I have submitted a review request for rpmfusion nonfree for
sdcc-nofree bugzilla #4105.
Sdcc has files with a nonfree license because they are based of files
from Microchip which have a restriction that their use is for
Microchip devices only.
The package sdcc-nonfree is to package the nonfree part of sdcc which
is not allowed in Fedora.