On 10/23/16 11:50 AM, shadoooo wrote:
> The problem is that there aren't open drain bus transceivers, but the > problem could be solved simply using input-only and output-only components, > connecting two in parallel but opposite direction on bidirectional pins. > The reason for using the old parts is the logic thresholds are unique to the Unibus to handle worst-case bus loading and the termination voltage they used.
