Look up in your MPASM manual the pseudo-op __CONFIG (note that there are _two_ underscores in front of the word "config") Also check the fuse values in the appropriate *.inc file. This will set up the fuses in PROMATE as needed. ______________________________ Reply Separator _________________________________ Subject: MPLAB to PRO MATE Author: paul@TQUEST.ORG.UK at internet Date: 12/3/96 4:20 PM At present I write my programs with MPLAB and compile them and then transfer them to the PRO MATE programmer, whereupon all the fuses need to be reset manually to their required values. This can get annoying when developing. My question is is there a way of configuring the fuses in MPLAB such that they are correct when the compiled program is loaded into PRO MATE ? or do I have to live with it. Thanks Paul Waterfield Exhibit designer Techniquest Cardiff.