When connecting my ICD2 to one of my new purchases it displays: Target Device PIC18F4431 found, revision = Rev 0x2. I can only find errata for the A2 and A3 revisions (and two for the timer1 and SPI any rev) how does Mchip number these revisions ? is a rev 2 newer than an rev A2 ? Can anyone tell me how to display The Device IDs (DEVID1 and DEVID2) in MPlab? Is there any way to determine the revision number from the date-code on the package? Just read up on the new 18f452's I bought too , almost lost it. guess I should have read about these before buying. But for a chip that's been there a while you don't still expect birth-defects. Thanks ahead for your answers. Peter van Hoof. pvhoof@yahoo.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist