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...