Working Dreamcast games

pjft

@BJRetro Call me intrigued about Virtua Striker. I had played the Dreamcast version but wasn't thrilled - you're saying that the Naomi/arcade version works well, is that it?

Any specific region of the game? What BIOS do I need? I'd certainly like to try it out and compare.

BJRetro

@pjft hi yes the one I am using is .185 Mame non-merged romset, vs2_2k.zip, bios is from the same romset (bios files .zip names are those mentioned earlier in this thread for Naomi, placed in the bios/dc/ folder.), with lr-reicast. Do you already have the Es_system.cfg file edited so emulation station recognizes .zip as a game extension for lr-reicast? If not you will want to do that too. And yes for whatever reason (which has not otherwise been my experience) I was getting more stutters and freezes in Virtua Striker 2 Dreamcast than this one. Weird. But maybe individual to me....

BJRetro

@BJRetro actually let me correct that - I had tried Virtua striker 2 on lr-reicast. Standalone reicast Dreamcast version at 640 resolution selected through the runcommand menu runs pretty similar to the Naomi version on lr-reicast under the settings I mentioned above for that. So it’s likely you won’t be impressed by Naomi either but let me know what you think.

shavecat

Got my new pi
still loading "_"
and quit :\

quicksilver

@shavecat is this the same image you were using on your previous pi that your cat destroyed?

shavecat

@quicksilver
yep :)

quicksilver

@shavecat well a new pi isn't going to change anything if you're using the same image as before.

shavecat

Got it FIX !!!
was need it to add the bios DC folder in the roms folder... it worked for some reason .

mitu

@shavecat said in Working Dreamcast games:

it worked for some reason .

You probably b0rked your RetroArch configuration and the system_directory is not set.

shavecat

@mitu
Works fine with the reicast-audio-omx.
the bios and everything else.
And its still really slow and leggy lr-reicast ,
cant really get even the game run well...(i can get in the RetroArch in the game itself... but all the loading run very slow in the game...)
any change i need to do ?(im ruining overclock 1500 )

mitu

@shavecat They were a few recommendations early on in the topic by @barbudreadmon - take a look at them and fiddle with the options in the RGUI.
Btw, reicast is not a RetroArch emulator, so it's probably using the correct paths to the BIOS files.

shavecat

@mitu
Think i will give a pass to that one :
thanks
untill it will be at list not experiential

barbudreadmon

@shavecat said in Working Dreamcast games:

any change i need to do ?(im ruining overclock 1500 )

As mentioned previously, overclock the gpu, here is an example :

arm_freq=1450
gpu_freq=500
core_freq=500
v3d_freq=500
sdram_freq=500
sdram_schmoo=0x02000020
over_voltage=6

shavecat

@barbudreadmon
yes its overclock...
but still really slow with the lr-reicast.

barbudreadmon

@shavecat said in Working Dreamcast games:

@barbudreadmon
yes its overclock...

Are you sure you overclocked the gpu too ? That's the most important thing.

shavecat

@barbudreadmon
yes :
on the dreamcast reicast-audio-omx everything works fine the speed the bios and so'.
really dont get why the lr-reicast dont work right .

pjft

@BJRetro Thanks.

I managed to get it running on lr-reicast and while certainly the accuracy is quite good, and it's great to be able to play the arcade version of the game, it still feels/plays a tad too slow/choppy compared to the normal reicast version for me. The US version, mind you - the PAL version has a lot of speed issues on Reicast, don't know why.

Thanks!

BJRetro

Just noting this for those that stumble upon this forum for what it’s worth. I just noticed that my bartop pi which uses a fan definitely runs Dreamcast games better than my other pi. Key example: Cosmic Smash for Naomi on lr-reicast on my non-cooled pi can’t run smoothly on 640 resolution without some skips/hiccups though ran on 320 but my bartop one is doing 640 resolution just fine right now. I don’t think any other settings on overclock are different. Not sure if this makes sense from a scientific standpoint but if so, would suggest those running Mupen and Lr-reicast have overclocking and a fan and see if that helps improve performance some.

Efriim

@BJRetro
Yeah the pi throttles at I think as low as 60 degrees celcius.
Which can be changed; but without cooling, on models like the pi3b+ you will soon reach 70.

the arm core will drop down to 1.2ghz, i think the others at minimum, for 3b+

barbudreadmon

@Efriim said in Working Dreamcast games:

you will soon reach 70.

This is not a big issue with a raspberry, old models could run up to 85, i don't know about the current one, i just know they somehow decided to lower the default throttle value from 70 to 60 in a firmware update.
You can change the throttle value to the old 70 value by adding this to you config.txt :
temp_soft_limit=70