Is it possible that one of the INDF registers points to that location? Kerry David Duffy (AVD) wrote: > OK, I have added a debugging output via the previously unused UART=20 > transmit pin. Thanks for the suggestion. > > What I've found is one byte of the receive buffer (in bank 1) is being=20 > corrupted. (from 0x3f to 0x04 or 0x24) I have checked and there no=20 > register in another bank (at the same location) that is being accessed. > > Why the reset makes any difference is not clear yet. I'm still on the=20 > trail though. > David... > > =20 --=20 Internal Virus Database is out-of-date. Checked by AVG Anti-Virus. Version: 7.0.289 / Virus Database: 267.11.13 - Release Date: 10/6/05 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .