I have posted previously about a DEC Pro 350 I am trying to get working again. At the moment it seems to be constantly resetting the CPU.
I have traced one possible path for the cause of this back to a NEC chip for which I cannot find a datasheet. It is a 40-pin DIP it is marked "NEC Japan 8239K6 D7201C". All I have been able to find is more modern USB host controllers. Can anyone tell me what it is? It is marked E32 (on the left about half way up) in this picture: https://rjarratt.files.wordpress.com/2018/10/system-board-labelled.jpg Thanks Rob
