ObsoNET2

In 2004, the very first ethernet cartridge for MSX was released: ObsoNET. Recently, some of our members wondered what happened with ObsoNet, which inspired the Russian MSX enthusiast Caro to have a go on re-creating the cartridge. So far, attempts to create an ObsoNET compatible cartridge failed because the way the GAL16V8 PLD chip should be programmed was unknown. Caro, however, managed to re-design ObsoNET in a way that it no longer needs this PLD - making it even easier to build. From a programmer's point of view, the difference between an ObsoNET2 and the original ObsoNET cartridge can be neglected, because the only missing feature in ObsoNET2 is the mirroring of registers of the RTL8019 into the MSX's RAM, which is not used in any existing ObsoNET software.

Relevant link: ObsoNET2 schematics
Relevant link: Article on ObsoNET2 (in Russian)