Thanks for all the input.

Please note that my thrust was based upon that I am not having to worry about the cost of the Nohau. I have that in my hot hands. I am really trying to work out if the product we are setting out to work on should....

1) Stay with the Dallas 80C320 or convert to
a a Cygnal part. We have that perogative because the project includes a new PC board.

2) Use the Nohau emulator or find another solution. This unit is 1994 vintage and may not even be supported anymore.

3) And finally, is the Keil tool set the optimum one to purchase.

Thanks Again.
Mike