Here are links to the files: ftp://lists.phcomp.co.uk/files/arm-netbook/EOMA_I2C_VESA_calc.pdf ftp://lists.phcomp.co.uk/files/arm-netbook/EOMA_I2C_circuit_small.png These are evidently by default good till 18 August 2018. If they are still cogent to the discussion I will try to keep them around longer. Richard