>If I wanted to use my a1200 for general use, all I need is internet access (at a reasonable speed) and word processing (preferably with word compatibility).
You need a very fast computer to run bloated software. Most internet software and MS-Word compatible stuff is bloated that relies on many levels of drivers/DLLs/applications. I use the Amiga everyday but it's not for stuff developed/standardized after they stopped developing the Amiga. See
www.mpdos.com.
Your question is like buying the latest PC and then asking, "How do I make a real-time system, disable caching and compile directly to a fixed location and write directly to VGA registers and memory or control some external device?" Well, you can't especially with a parallel port missing, power management with a mind of it's own, and things running in your system that you are in as much ignorance of as spyware and viruses.