BBA Cloning

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Lollipop
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BBA Cloning

Post by Lollipop » Sun Jun 05, 2016 6:56 am

Hi guys,

So I noticed that there were a few vendors on Alibaba selling IC's with the same serial number as the MX chips found on the Broadband Adapter (mx98730ec). I won't be able to order any currently but maybe this is a starting point to cloning the BBA?

Lollipop
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Sierron
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Re: BBA Cloning

Post by Sierron » Sun Jun 05, 2016 1:24 pm

Saw them too some time ago when I looked for that chip. There are also some chinese chip suppliers which sell too.

As far as I understood from the docs it's an SPI like interface. But I doubt a normal spi ethernet adapter would understand the protocol used by the gamecube. At least not without further chips.
Haha! I have two BBAs now :P | I also have HomeLand and PSO I&II
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Streetwalker
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Re: BBA Cloning

Post by Streetwalker » Sun Jun 05, 2016 1:49 pm

The gamecube talks to the bba over exi (which is pretty much spi mode 3). If it's the same chip, all that's needed is a way to physically connect it to the console (since the connector is custom) and a PCB layout (need someone to pin out the original).
According to the wiki, it also needs a pulse transformer and I can see a serial eeprom on the pictures. That might contain some vital data so it needs to be dumped.
Lollipop
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Re: BBA Cloning

Post by Lollipop » Sun Jun 05, 2016 6:32 pm

Yeah by some basic visual inspection the circuit on the BBA board is really simple there is only one or two other major components that we need.
Also Sierron, where did you find the Docs for the the Chip? All the providers and spec sheet databases that I checked are missing this particular model (not surprised).
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Sierron
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Re: BBA Cloning

Post by Sierron » Sun Jun 05, 2016 9:37 pm

I think my post was kinda misleading to you, Lollipop :P I meant the available docs online like yagcd or the docs of the similar chips (xxx26EC and xxx28EC).
Haha! I have two BBAs now :P | I also have HomeLand and PSO I&II
tueidj
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Re: BBA Cloning

Post by tueidj » Mon Jun 06, 2016 4:22 am

Most NICs have a prom of some sort for their MAC address.
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Papy.G
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Re: BBA Cloning

Post by Papy.G » Tue Mar 05, 2019 11:51 am

There are some Ethernet and Wifi devices designed to work in SPI mode with Arduinos, Raspis and other trending SBCs that are basically a MCS core and a dedicated communication core packed in one chip. Some of them may be reprogrammed to support the specific protocol that the GameCube and BBA use.
Or maybe a null-modem alternative can be programmed with just a µC with dual SPI support beside both Cubes, or even a Bridge with a PC or tiny linux box running an emulator through a serial port to ethernet?
Overclocked DMG
AGB/supercard miniSD
DS Fat/NeoMK3 2006 512Mb
DS Lite/flashme V8noautostealth/Supercard miniSD
DOL001(EUR)/RGB/GBP/WiiSD+Gamexploit
RVL 001/RGB/CMP/WiiSD
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