A note on StormC4. It requires lots of memory. If you have less than 32MB Fast RAM you need not bother (you CAN get by with 16MB, but I wouldn't recommend it). In that case you could look into SAS/C (which you can't purchase anywhere these days), or GCC. The latest GCC for classic Amiga is 2.95.3, though there was a 3.4 update, but I can't seem to find the link right now.