AmIRC requires KickStart & WorkBench 2.x or later, with setpatch 40.16 installed.
AmIRC020 requires a 68020 or higher CPU and OS3.0 or newer. This version is optimized for such machines.
If you plan to run a TCP/IP stack and AmIRC among other Internet applications you should have at least 2 megabytes of RAM.
Finally, you need to have a TCP/IP protocol stack running, such as Genesis, Miami, AmiTCP/IP or Amiga Technology's as225r2 TCP/IP protocol stack.