First post, by emendelson
In a different thread, I raised the question of the way DOSBox displays the 2nd font table on a VGA display. This thread is about the underline attribute that becomes available when the video mode is switched to "mode mono" (video mode 07).
All hardware that supports the VGA specification (including vesa-compatible boards like those from Paradise, Tseng, etc.) support the underline attribute in video mode 07. The vgaonly option in DOSBox supports it correctly, as in the image below:
Unfortunately, none of the svga* or vesa* options support it, as shown here:
Some old text-based games from the original IBM PC era used the underline attribute when mode mono was on, so I hope this is something that might be worth patching or changing. Thanks again to everyone here for any help with this.