MiSTer FPGA Forum

I was one of the lucky users to purchase a display latency tester for the MiSTer Laggy core. I have about 50 displays I use between personal and gaming club use (I am a teacher). We have a decent amount of competitions where display latency + input lag is a genuine concern. I have the original specs for most of my displays, but this tester will hopefully give me some more data points. Some displays claim 5ms while others claim 16ms. I make the assumption that the 5ms are really 5ms, but I'd like to know for sure.

Anyway, I clicked purchase before I read that an IO board was needed to access the User Port. I do not have an IO board and wasn't really looking to purchase one. I am handy enough and can solder my own usb port or whatever is needed, but I was wondering what peoples thoughts were on a way around this? Can I access the User Port through GPIO? I would assume so, but there isn't any direct documentation that I have found yet. Are any of the other mini/micro usb ports on the DE-10 nano a User Port, but not directly labeled as such?

Thank you for any help you can provide!

The MT32 PI wiki contains information on the USB 3.0 wire to GPIO mapping. It is in the context of MT32 PI, but since all wires are mapped, I suppose it is identical for a general purpose use case:
https://github.com/dwhinham/mt32-pi/wik ... ace-pinout

I used it in the past for a "ghetto pi" with jumper cables on both ends, but I think it should work in any combination of USB/wire on either end. Worked fine for me.
viewtopic.php?t=2168&sid=9d9aa1294467b3 ... a3c8b499b4

FWIW, only the first four signals are used by the Laggy, so just VBUS, D-, D+ and GND.

Thank you for the information! I should be receiving the device in the mail today and will test it out this week.