Hi,
I am using the UP2 development board from Altera. I have programmed a simple ALU in it. I have done some hardware tests on it through its expansion slots but the results are inconsistent. To perform the tests, I connect the expansion slots with IDE cables to a verabod in which i have soldered many switches and LEDs. However the results were inconsistent, sometimes I couldn't load the the values into the bus at load at all. Other times when i load the upper bits, the lower bits get erased. Any inputs on this? I was also thinking of interfacing it with a control card made entirely of TTL chips. Power source is taken from the TTL control card. Any inputs on the potential problems I might face? Thanks!
Jalen