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ObsoNET design available under licence

by dberdugo1 on 21-10-2011, 18:01
Topic: Hardware
Tags: Ethernet
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Daniel Berdugo, one of the creators of ObsoNET, the first Ethernet interface for MSX, has released the schematics of this cartidged, licensed under CERN Open Hardware License v1.1.  

This means that anybody can now make their own ObsoNET cartridge or organize a team to manufacture a batch of them , in order to reduce costs. A complete package has been made available, containing:

  • Project made with Catsoft Eagle
  • Basic documentation for assembly ((photoliths, schematic and parts list)
  • Gerber files for ordering boards at any PCB manufacturer, such as Olimex, 2CI, PCBCart, etc
  • VHDL source file for the behavior of programmable logic and JEDEC file ready for programming directly on the GAL16V8D

Earlier this year, an alternative cartridge based on the original ObsoNET, but no longer uses the GAL16V8D PLD, has been released as well. You can find out more information about this alternative project here.  

Relevant link: Obsonet design/schematics

Comments (3)

By Bastiaan

Champion (333)

Bastiaan's picture

23-10-2011, 14:28

very cool to share your knowledge in this detail!
I think this helps to spread this ethernet hardware worldwide, and not country-wide like it used to be with most older hardware. (some hardware is very Dutch, some very Spanish, some very Brazilian, some very Japanese: making some cool expansions only available for a few MSX-ers ).

By sd_snatcher

Prophet (3480)

sd_snatcher's picture

23-10-2011, 18:43

Off course there are more advanced designs, but I particularly admire the ObsoNet design for its simplicity. It's so straightforward that it fits perfectly between other MSX interfaces from the MSX commercial era.

I have only a small enhancement suggestion for this specific design: Update it to include the IRQ support, just like the ObsoNet2 by Caro has. It's a very simple modification.

By geijoenr

Champion (275)

geijoenr's picture

17-10-2021, 13:19

Does anybody have the gerber files for obsonet? It appears the original website where they were being shared is no longer available.