Hey Paul_V, thanks for the offer to help! I've actually been able to solve the issue since I originally posted this thread. It was a little complicated but your thread here https://www.vogons.org/viewtopic.php?f=46&t=85448 led me down the right path. I'll post what worked for me in case anyone ever …

New poster here, hope I'm in the right forum. I've been following the work of others who are experimenting with Vortex86 SBC/SoM setups for some retro gaming. I snagged a PC/104 board with a Vortex86DX w/ onboard video. Normal DOS resolutions work fine over VGA with my Flat Panel LCD (Dell U241). ( …