the first one, embedded bios support for bus master IDE
"increase the overall system performance without sacrificing the limited base memory The amount of RAM that comes with each model of a particular computer. The base memory can usually be ugraded to a significantly higher amount. For example, a desktop machine with 64MB might be upgradable to 768MB. of the PC."
(i think)
Not sure about the second one either, but if it has a input that looks similar to s-video i think its used for diagnostics