Cheapest way to connect ARCNET to Ethernet:
- old 486 or Pentium PC (or even 386)
- ARCNET ISA NIC
- Ethernet ISA or PCI NIC
- old network OS: Linux, NT4, Win2k, Netware 3, NetBSD, ...
- set up routing for both network cards
The only piece not easy to come by is the ARCNET board - I had a bunch flying around but threw them out some ten years ago...
To connect an A500 online, one of the best ways is probably adding a Z II NIC by means of a slingshot adapter. But then again, the best upgrade for a 500 is a 1200, providing a way for cheap PCMCIA NICs...
I knew there had to be a reason I have been hoarding this stuff for ten years

I have an Amiga A560 Arcnet for the A500 and a A2060 Zorro Arcnet for big boxes, so Miami on the big box should be able to route between the A2060 and the Xsurf. And yes, I have an ISA Arcnet board for my BridgeBoard!
Now if I can only find an PP&S DoubleTalk A500 adapter to talk to my DoubleTalk zorro boards and my Appletalk ISA card ...