MiSTer FPGA Forum

I'm planning to create a small board to adapt buttons from my arcade controls to Mister and would like to use polled I/O rather than via USB. I don't ever expect this to go mainstream so it doesn't particularly matter but I am wondering which pins would be most appropriate... I need 3 pins... clk, sync and data....

Would...

Arduino_IO13 AH12 USER_IO[2]
Arduino_IO14 AH9 USER_IO[1]
Arduino_IO15 AG11 USER_IO[0]

be good candidates?

Thanks in advance

PS
I would also like to expose the VGA pixel clock to a pin... Arduino_IO8 AF17 USER_IO[6] ?