Hi Markus,
yes, I'm german, but for other readers here, I'll answer in english language.
I have found the files at http://www.sctec.com.br/content/view/85/46/ some days ago.
But I have no more information about that, no hardware, never compiled by myself.
You have to find out more by yourself, sorry.
Also, i know some other sources for interface Freescale uP <---> T6963 graphic controller.
1.) My preference:
This is "DRM008" , "Alarm Control Panel Reference Design" from Oliver Thamm.
You can download complete sourcecode & documentation from
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=RDHCS12ACP
The project ist for HCS12, but well documented, and written in C.
See file "t6963.c"
2.) A "bean" for Processor Expert is also available ...
http://www.processorexpert.com/package_info.php?pac_id=396&tpl=mc__package_info.html&&s_bea_id=&&s_rel_id[]=4&&&&&&&s_bean_name=&&&FormTable_Sorting=6&FormTable_Sorted=&&Formtable_Page=&&Formmcus_Page=3&Formmcus_Page=2
3.)
Another source (german language) for questions about T6963 is http://www.mikrocontroller.net/ forum.
Search for T6963:
http://www.mikrocontroller.net/forum/mikrocontroller-elektronik?filter=T6963
But the discussions there should be handled with care, because sometimes not really accurate.
Klaus