Dreamcast-Talk.com

Hello everyone. I've been trying to get dreampi 1.8 running on my pi4, but all I'm getting is the "rainbow screen" on boot. I've tried 3 SD cards already, and I'll willing to try more, unless someone else has a better idea. A lot of the youtube tutorials are a couple years old, and while I'm sure the process is the same, maybe something has changed with disk imager? Or maybe the rainbow screen is as far as I need to go, but I was hoping to get to the terminal so I could get wifi going.
Thanks in advance!

Sometimes I can be a real dummy. I was using the wrong micro HDMI port.