Is this the same CHAOS that can be in IP packets as protocol 0x10?
greyface- 12 hours ago [-]
Yes, and in DNS messages as class 3.
hackernudes 4 hours ago [-]
Get your public IP from cloudflare over chaos dns:
dig @1.1.1.1 ch txt whoami.cloudflare +short
larsbrinkhoff 3 hours ago [-]
Yes, and in Ethernet frames as EtherType 0x0804.
trollbridge 11 hours ago [-]
As a reminder, CHAOS protocol is valid over IPv6 as well.
inigyou 14 hours ago [-]
Should not be confused with Chaos VPN, a predecessor to dn42 for linking nstworks of the Chaos Computer Club.
bitwize 1 hours ago [-]
I only know of this because the CADR emulator supports an emulated version of it.
amszmidt 1 hours ago [-]
It is also capable of doing it over the wire.
karlgkk 9 hours ago [-]
Woaw! You could use a space cadet keyboard with this!!1!
peter_d_sherman 10 hours ago [-]
"The transmission medium of Chaosnet is called the ether. Physically it is a coaxial cable, of the semi-rigid 1/2 inch low-loss type used for cable TV, with 75-ohm termination at both ends. At each network node a cable transceiver is attached to the cable. A 10-meter flat cable connects the transceiver to an interface which is attached to a computer’s I/O bus."
[...]
"The transceiver receives a differential digital signal from the computer interface and impresses it onto the cable as a level of about 8 volts for a 1, or 0 volts (open circuit) for a 0, through a very fast VMOS power FET. When the cable is idle it is held at 0 volts by the terminations. This simple-minded unipolar scheme is adequate for the medium cable lengths and transmission speeds we are using. The transceiver monitors the cable by comparing it against a reference voltage, and returns a differential signal to the interface. In addition, it detects interference (another transceiver transmitting at the same time as this one) and informs the interface."
Seems like the above would be all that's necessary for the simplest possible "built around first principles" local LAN, if someone wanted to experiment with an early Ethernet-like system...
A Short History of Chaosnet (2018) - https://news.ycombinator.com/item?id=36079416 - May 2023 (5 comments)
A Short History of Chaosnet - https://news.ycombinator.com/item?id=29927718 - Jan 2022 (1 comment)
Chaosnet Network Protocol - https://news.ycombinator.com/item?id=20972236 - Sept 2019 (11 comments)
Chaosnet - https://news.ycombinator.com/item?id=19623831 - April 2019 (12 comments)
A Short History of Chaosnet (2018) - https://news.ycombinator.com/item?id=19480577 - March 2019 (6 comments)
Short History of Chaosnet - https://news.ycombinator.com/item?id=18107136 - Sept 2018 (5 comments)
Chaosnet, a memo from July 1981 - https://news.ycombinator.com/item?id=6787665 - Nov 2013 (1 comment)
Lispm, PDP-10, PDP-11, VAX.
[...]
"The transceiver receives a differential digital signal from the computer interface and impresses it onto the cable as a level of about 8 volts for a 1, or 0 volts (open circuit) for a 0, through a very fast VMOS power FET. When the cable is idle it is held at 0 volts by the terminations. This simple-minded unipolar scheme is adequate for the medium cable lengths and transmission speeds we are using. The transceiver monitors the cable by comparing it against a reference voltage, and returns a differential signal to the interface. In addition, it detects interference (another transceiver transmitting at the same time as this one) and informs the interface."
Seems like the above would be all that's necessary for the simplest possible "built around first principles" local LAN, if someone wanted to experiment with an early Ethernet-like system...
Anyway, great article!