I'm using the NE64 part.
Does any one have any advise on using the Port E pins that are used for ModA/B/C during boot.
The problem is that I cannot define the state of these pins during boot as they are connected to bcd switches.
I could add some circuitry to swap between by circuit and open pins during boot, but that is quite a lot of work.
I'm wondering if anyone has come up with a cute solution?
Also is there any may that I can disable checking the Mode pins during boot (I'd be happy for mode to be configured when I program the part)?
Final question: I cannot find in the data sheet whether the Mode pins define open circuit as a logic 1. I'm not clear on whether I select mode by tying the pin hi/lo or open/lo.
Any help much appreciated.