I found the problem... The Data sheet on the Parallel Slave Port makes mention of the Interference of the ECCP1, and the A/D, BUT it makes no mention of the COMPARITOR module, which on power up DISABLE (PSP) PORTD bits 0:3. Sigh! Tom * | __O Thomas C. Sefranek WA1RHP@ARRL.NET |_-\<,_ Amateur Radio Operator: WA1RHP (*)/ (*) Bicycle mobile on 145.41MHz PL74.4 ARRL Instructor, Technical Specialist, VE Contact. http://hamradio.cmcorp.com/inventory/Inventory.html http://www.harvardrepeater.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist