I had my A1000 with a x-surf hacked to the side and a viper 520cd inside with 020/33mhz ,8MB ram,540M ide hd,and 3.0 roms on the net with Ibrowse and aweb in 16 glorious colors. It actually worked better than expected, I just had ibrowse use fastram.
On my A500 i have a 4MB ram expansion(baseboard) in the belly slot and a gvp ANET 500 side car(which is just a side car with a hydra ethernet card inside). it will get online with no problem. irc,ftp,and email will always be easy on a limited machine, it will browse with 4MB but its not so great with 68000 7mhz.
When i use that setup with the CSA derringer accelerator inside and 32MB of 32bit fast ram,she really does well.
the lantronix device is pretty slick,it allows going from serial to ethernet.You won't win any land speed records but a accelerated A500 does ok on serial especially with better serial.devices.
How much RAM does one need to work with internet?
@Karlos, thats why I would have liked to see Ethernet on the FPGA-Replay 
