I wanted to upgrade my Master Computer with Econet but after looking at the price of the ADF10 module on eBay decided to make my own !
The original version uses a 26LS30 driver chip whereas all previous Econet interfaces used the 75159 device, I have made two variants of the module so that you can choose which driver to use, as far as Econet is concerned there is no difference. This module is also used in the Acorn FileStore.
The module is based on the Based on the 0259.200 Issue 2 Schematic.
Schematics
Bill Of Materials