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Ridge Racer 2 and Rave Racer link play working in MAME WIP test build.

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pocketjazzy:
Hello all, sorry to necro an old thread but I just had to make an account and chime in to say thank you to @SailorSat and @John Bennett for their work on this. Sailors mame fork with their C139 link play progress was enough to work with to "vibe code" C422 support (chip used for networking on later Namco cabs). I now have a working and stable link between two MAME instances running time crisis 2, the menus sync up, and link mode shows available. I'm currently running into desync issues during/after the opening stage 1 cutscene which seems to lead to the cabs falling out of sync and reverting back to solo mode. On a few occasions I have gotten both instances to be in sync for the first area in stage 1, so both were showing the partner cab characters actions, but it's not consistent. Timing seems very critical in link play, so if one cab does not receive expected data, or doesn't ingest the data into the right locations, then one or both fall back to solo mode.

I would love to share what I've got so far if people are interested, and would happily accept ANY help offered. I am not a programmer or familiar with reverse engineering roms, so I am definitely not doing this the "right" way. I added a few screenshots showing some of the milestones. If any of this has already been done, or if there's another group already working on this, then apologize for the confusion!

Feel free to shoot me a message on discord as well - pocketjazzy

xbrunox:
Hi.
Congratulations on your great work.
But is there an executable version of the Mame fork with the improvements for the sailorsat link?
I haven't found anything online and I'm not even capable of compiling one myself.

Thanks

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