K: Keyboard C: Cassette (slooooow) Dn: Disk drive P: Printer
Today, we have a device called FujiNET. It is basically a serial to Internet bridge.
N: For Network
And most programs just work across the Internet despite being 30 years old. Once the N: handler was done, Atari computers basically are networked.
Programming with the Internet works like serial does, and there have been a couple multi player games written in BASIC that perform nicely.
I plan on getting one for my 800XL one day in the near future.
The FujiNET is being made to worn with other machines too. They all vary in how this kind of thing can be made to happen. The Atari will end up a benchmark, or reference.
SIO today is seen as a very early USB type implementation that offered capability for up to 30 devices to coexist on the serial bus.
Pretty damn spiffy, and I feel it is one of the better features. Each 8 bitter has at least one stand out thing. On the Atari, this is one stand out often underappreciated.
The Apple had slots and an assembler monitor.
C64 had great sound, sprites, nice user port.