I don't know a whole lot about this book I read years ago other than the fact that I remember LOVING it and really would love to read it again. I want to say that I read it in the late 80s and that it was written about the same time. I remember the cover being black and white split down the middle. Possibly with some sort of helmet on it...
The basic premise of the book is that there are knights but they fight with swords that I remember them calling "arc" something or other. It was a futuristic book and there were suits are armor and that was where the arc's came from. Kind of a lightsaber sort of thing. I remember there was a quest but don't remember anything about that side of it. I also seem to remember there being a time travel element to it.
Please help me find this book! Thank you in advance!