Hi Ludo! I've been working with FPGEN and DPR but I have problems, please execute: >make ioregs_fpgen.vst -- which runs fpgen on ioregs_fpgen.vst >make ioregs_dpr.ap -- which runs dpr on ioregs_fpgen.vst >make ioregs_dpr.drc The last instruction reports drc errors (look the file ioregs_dpr.drc). The file ioregs_drp.ap contains a instance "like" this: -------- |N-WELL| | _| |____| <-- empty square (x=247, y=1011) The drc errors were solved filling this square with nwell. I think the problem is caused by the abutment box, its N-WELL segment is shorter than others... I sending you the fixed ap file called fixed.ap. Is there something wrong with my ioregs_fpgen.c or is it a bug? A last question.... What is the abutment box? What's its purpouse? Best regards, Andres FARFAN _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.