Several months ago Col Gibbon contacted Zeus software to enquire about getting the documentation for glide3.
"Zeus" kindly offered to update the source code, and a few days ago he sent me the modified files that he had made for the version I sent him. This morning I was able to track the changes to two files which have been updated since that time, and make a Glide3 version of my latest source code.
It works
Now we need some 512x512 TPC files to test how it handles them
A very big "thanks" to "Zeus" and thanks to Col Gibbon and Allen (Brit44) for their help in getting this to fruition.