Forum Discussion
John-Monahan
New Contributor
7 years agoHow to interface with bidirectional pins from an internal data bus in a .bdf file
Clearly i'm a newbie, but I'm really stuck with what is I'm sure a simple problem. I am using a .bdf to code a Cyclone IV FPGA using Quartus Lite v18. I have a circuit with an "internal" 8 bit dat...
John-Monahan
New Contributor
7 years agoThanks Johi, I understand what you have there but thought there was another way and I was overlooking something. Wish the was the equivalent of an Open Collector gate is these FPGA's.
I don't however understand why I cannot use Output enables OE*. Say using the 74244's. If they behave like the 'real' 74244s, multiple gates should not affect an output pin function if only one is active at a time. Why does that not work -- be accepted by Quartus.