Since you're actually *running* a TFT . . .
There is a riser-card PC that's nearly identical to the IOpener -- the Advantech 6752N. If you can find a copy of its BIOS on the Internet, it may be useful to you. The 6752N's BIOS is pre-configured for a TFT display, and would probably operate your TFT display. You may want to use MODBIN on this BIOS to set "Halt On" to "No Errors" to get around any glitches due to the hardware differences between the two machines.
I must warn you that I've RARELY been able to get this BIOS to boot on my test machines, even with a lot of twiddling (purging the CMOS, various combinations of hot-swapping and other techniques) and even splicing between the IOpener's BIOS and the 6752's BIOS. Please use a second, separate BIOS chip if you decide to try this, so you can revert to a "known good" BIOS if it fails.
The only reason I bring this up is because I'm fairly certain that most of my difficulties came from not running a TFT off of the IOpener -- I've only got the stock DSTN displays.