ArcadeAge wrote to J.B. Wood:
A> 
A> While doing some research for this issue, I came upon a forum discussion 
A> where someone mentioned a program named "koala2ppm.c". I
was unable to 
A> obtain such a file or program text. Does anyone reading this know anything 
A> about this?
A> See
A> http://gimpforum.de/showthread.php?p=132185
A> (in German)
A> 
A> --- SoupGate-Win32 v1.05
A> (3:770/3)
A> 

Since I am german, I visited the link you mentioned (regarding koala2ppm.c) 
but
 in the post they only mention the C file which they "got off the
web". I did
some further research and found out that on Ubuntu Linux there is a GIMP 
Add-On
package called "gimp-cbmplugins" and comes with the rather
useless description
"plugins for The GIMP to import/export Commodore 64 files".

Maybe that info helps?!

     

    Greetings, Niels Haedecke

--- MBSE BBS v1.0.7.11 (GNU/Linux-ARM)