> According to the readme.pls file in the MPLAB directory, the 18F452 > requires PSPLUS firmware version 3.00 or greater. Thanks. I've just found the info in "Readme for PICSTART Plus.txt" > You should be just fine, and can even use the older (5.7) version of > MPLAB. Refer to the readme.pls in your MPLAB directory for the lurid > details. Under Configure/Select Device the 18F452 is shown as Beta support for PSP. I had the feeling that the 18F452 was or had been a bit buggy and so said "properly and reliably programme". As a new user (soon) of them I was just trying to get it straight. I'll wait until I've got them and then confirm that what's installed is enough -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads