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Author Topic: A4000 motherboard layers? and A3000?  (Read 2486 times)

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Offline Hanzu

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Re: A4000 motherboard layers? and A3000?
« on: January 11, 2013, 11:44:56 PM »
Quote from: freqmax;722120
My thought was along the line that the FPGA projects are not fully compatible yet with the originals. And there exist lot of broken Amigas where only the motherboard is the broken part but the chips are ok. So then the idea is how feasable it would be to create a replication of the original motherboard.

Only sockets and ports need to retain their mechanical position. The rest could be optimized. Perhaps new PCB technique allow 2-layer board for the same job?


Yes it would be great to have new motherboards that would still keep the old backward compatibility. However 2-layer board as motherboard would be bad move. 4 or more layers are needed because of fight against interference and not because of no space or lack of routing skills of old developers or autorouter programs. Ofcourse redesigning some components to smaller SMD size and putting resistor networks instead of resistors could leave some more space for better ESD and radio interference protection. With modern design developer or developing team would probably go nuts when trying to balance with too many things to improve and keeping enough backward compatibility with additional hardware and software and without backward compatibility it would be pointless project since we already have better next generation Amiga-likes.
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