What program are you using to open BIOS .rom files to know if it has SLIC 2.1? Because before I buy a computer, I want to check if the motherboards BIOS is already SLIC 2.1 by downloading the BIOS file online from the motherboard model.
I'm sorry, I probably misread your post originally. I get a bit frustrated with my own endeavours and tend to take out my frustrations in the wrong places. Hexedit works just fine and is a lot smarter than these other apps, but it has a very steep learning curve.