Cambridge-based Tadpole Technology Plc, and Isle of Dogs, London based robotics specialist Caplin Cybernetics Corporation have a non-exclusive technology agreement which allow Tadpole to develop and market a graphics accelerator chip creating the new concept of hardware windowing. Tadpole is the first company to adopt the chip, and it will market the product, the first for its newly formed Silicon Engineering group, in Europe and the US, as a manufactured product mainly to its customer base. The deal, initiated six months ago, allows Tadpole to design the VLSI chip in detail and market it in either VME board form or chip form.