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

[SailorSat]

Made *some* progress...
"mode 9" games still show "link 1" in test mode - even if the 8 player link is working (as tested with suzuka8h and fourtrax).

oddly enough, the 8th car in rave racer is flickering in and out of existence.

[John Bennett]

A year or so ago, I'd have been upset you'd beaten me to it.
Now I'm just relieved I don't have to look at it again  . That's excellent stuff   

I couldn't come up with a reliable vsync mechanism, but I'd never twigged that those were multiple TX video frames queuing up in that buffer. Makes a lot of sense now.

You can finish it and run the gauntlet of putting it all into Mame now 

I wonder how many people have seen an 8-player Ridge Racer 2 setup! That panorama is ridiculous!

[anchounio]

That's some incredible work !

Thanks John Bennet for starting it, and SailorSat for continuing it.... It seems close to be done!
Great teamwork !

[SailorSat]

I wonder how many people have seen an 8-player Ridge Racer 2 setup! That panorama is ridiculous!

[John Bennett]

Mmm, yes, that'll do 

Did you just alter the C138 and the System2/21/22 drivers, or does your build have changes to the networking code vs. standard MAME?

I'll admit, I had a play dropping those above drivers from Cabmame into my build of MAME and it made a bit of an attempt to sync two instances, but presumably dropped loads of packets as the games wouldn't show a link. So I was wondering what I was missing.

[SailorSat]

I did indeed. -- https://github.com/mamedev/mame/commit/c729acf5613522e1b44bdbd4534ded655753db1d

[John Bennett]

I should've said the other day, but that works great  .
It's also great seeing the triple screens being properly sync'd at last.

One oddity though - Tokyo Wars. I can get it to start in 2 player but it ends the game immediately. So I guess it's getting enough data across to see the other machine, but not to play a game without faulting.

[xbrunox]

I did indeed. -- https://github.com/mamedev/mame/commit/c729acf5613522e1b44bdbd4534ded655753db1d

Hi Sailor.
When will we have a version of mame also in beta version with these implementations?

[SailorSat]

It should be in 0.276.
As long as my pull requests gets merged.

Bonus:

[anchounio]

Hi SailorSat !
Your PR is incredible. It might be the hugest improvement for MAME LAN emulation ever in a single PR !!!
Thank you for such an amazing work!
Will the changes in C139 LAN emulation be enough to, at least, run a 4 players LAN with those games?   or is it too unstable?

enough for 2 players maybe?

[SailorSat]

Well I've had it running with 8 players too.
Depends on the game and the speed of the machines.

Ridge Racer 2 on my 8-Player Daytona is like gambling... sometimes all 8 link up (and can play), sometimes only two link up (although they can race each other)

[anchounio]

This is interesting... So once the cabinets have linked, the link won't break ?

[SailorSat]

Yes. I can only guess it has to do with some timing. Once they detected each other, they stay detected.

[SailorSat]

I am amused to see we still don't have the correct dump for ridgeracer fullscreen in MAME yet.

[anchounio]

I am amused to see we still don't have the correct dump for ridgeracer fullscreen in MAME yet.

I had not understood your message untill I searched for Ridge Racer fullscreen in youtube. I did not know this 3 screens version existed....  And now I know what you mean: Broken graphics due to a bad dump.