>where in the uk can I buy them?. I've tried rs/farnell.

Try Crownhill who seem to be the cheapest in the UK on the web
http://www.crownhill.co.uk/ or try

Becky Harding
Microchip & Intersil Sales Co-ordinator
Tel: 01296 332376
Fax: 01844 210929
Unique Memec - Lead By Design

Do not have a web site for them.
(thanks Dominic, I have the Picstart Plus upgrade on order).

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