Magic-1 is a completely a home built minicomputer that doesn’t use an off-the-shelf microprocessor, but instead has a custom CPU made out of 74 Series TTL chips.
Altogether there are more than 200 chips in Magic-1 connected together with thousands of individually wrapped wires. There’s a ANSI C cross-compiler for Magic-1(retargeted LCC), a fully multi-user, multi-tasking port of the Minix 2 operating system.
Magic-1 has an ethernet interface using WIZ830MJ. WIZ830MJ is development board for Wiznet’s W5300 – which is seentially a TCP/IP stack on a chip.
You can also hear the explanation of the Magic-1 through YouTube. Here is the YouTube link.
For more information about the project: