When you say an osc shouldn't be applied during programming, does this include a mere crystal, or an external clock generator? Bryan -- --------------------------------- BRYAN CROTAZ - b.crotaz@ic.ac.uk --------------------------------- TECHNICAL MANAGER Student Television Of Imperial College Beit Quad, Prince Consort Road London SW7 2BB Tel. 071-594-8104 Fax. 071-225-2309 attn. STOIC