Shows an .xcf bitmap/image on an emulated 68k Mac Plus (with 4 MB RAM), via C++ code, compiled into a custom Mac ROM.
This can be built using a g++ cross compiler (to m68k) from a non-m68k host. I used a 32-bit x86 VM running Ubuntu 17.10, with the
g++-m68k-linux-gnu package installed, via apt.
make were also installed (via apt), to help out. With those packages installed, running 'make' was sufficient to build this .rom file.