[floor]

I recently bought SA on steam, and I was about to download SA-MP, when I found out that it was in fact incompatible with the steam version. Me being a determined fellow, I thought: what exactly makes it incompatible? I think it's just the memory addresses that are different to the other versions, which I immediately realised would not be that hard to make compatible. I would be willing to sit for hours on end and locate all the addresses for everything. some will not be that hard, but most would be incredibly hard to locate- such as vehivle addresses, time adresses, and other similar variables within the game.
What i'm asking is, why is SA-MP incompatible with V3 of SA?