Topic: dink's FBN Development & Fixes thread

[barbudreadmon]

What is ?cps3 speedhack? from latest build?

A speedhack to prevent a block of code from being re-executed several times with exactly the same parameters, it improved cps3 performance quite nicely on my setup.

[dink]

nice work barbudreadmon!

[dink]

Cleaned up/modernized the Tiger Road driver a bit, highlights:
Capcom's F-1 Dream (romset f1dream): hooked up protection MCU, game is now working

Improved fidelity in Tora e no Michi (romset: toramich)'s msm5205 (adpcm samples)
toramich is the Japanese version of Tiger Road, it's PCB is slightly more advanced w/added adpcm samples - give this one a try if you havn't - you might like it better than Tiger Road!

best regards,
- dink

[dink]

Hi everyone,
Help needed!  Want something to do?
Play/Try/Test games in the following list and let us know if there are any problems / bugs / "weirdness" with the new stuff.

These games, for example:
Disco Boy (discoboy)
F-1 Dream (f1dream)
Tiger Road (tigeroad)
Tora E No Michi (toramich)
Missile Command (missile)
Exerion (exerion)
N.Y. Captor (nycaptor)
Moon Patrol (mpatrol)
Alpha One (alpha1v)

Game Name (romset name)

Even if you're not sure if its a bug, please let me know   VIA PM if you prefer!

best regards,
- dink

[ClessxAlghazanth]

Hi 

I've been playing Missile Command , Exerion and Moon Patrol on FBNeo these days and haven't noticed any issues so far 

(By no means I'm a gaming guru  ; never played those on a real pcb or anything)   

[Gab75]

I'm playing Tiger Road and the game (until now) seems to run very well!

[dink]

ClessxAlghazanth & Gab75, thanks for testing

[Gab75]

ClessxAlghazanth & Gab75, thanks for testing

You're welcome!
I also tried Alpha One (alpha1v), the game works very well...

[dink]

Hi friends & fbneo fans,
This one's big, it's going to be a 2-parter.

First part: added RunAhead feature to fbneo, it's really a nice feature:  seeing mario jump (nes_smb), a ship shoot (any shooter) or guy punch/kick instantly when you press a button is a good thing.  Really, it's a great thing!  Getting this working perfectly took about 1+1/2 days.

Second part: Working on fixing bugs...
Something I noticed right away: a lot of games - about 25% of them, have little glitches in the audio caused by the RunAhead feature.

The plan is to keep the new feature off github until all games are working flawlessly.  Hoping to be done by Wednesday (August 4th) or sooner!

best regards,
- dink

[el_rika]

I assume the performance penalties will be similar to Retroarch's, right?

[barbudreadmon]

I assume the performance penalties will be similar to Retroarch's, right?

Knowing how the whole savestate process is a bit crazy in RA, i assume there will be slightly lower overhead.

[dink]

I assume the performance penalties will be similar to Retroarch's, right?

I havn't tried Retroarch's Runahead to compare, but...
Regarding standalone performance: it's lightweight and almost transparent.  I'm really quite happy with how it has turned out. 
Let's take for example, Heavy Unit (hvyunit).  With vsync / windowed 2x size it takes 9-10% (task manager), with runahead enabled, it's 10-11%.
With Cyvern, it's 9-11% and w/runahead 11-13%.  Cyvern on Kaneko Suprnova HW is a Hitachi SH-2 game that uses every single cycle of it's emulated 28mhz cpu.  (it doesn't benefit from speedhacks like other Suprnova games)

best regards,
- dink

[iq_132]

I havn't tried Retroarch's Runahead to compare, but...
Regarding standalone performance: it's lightweight and almost transparent.  I'm really quite happy with how it has turned out. 
Let's take for example, Heavy Unit (hvyunit).  With vsync / windowed 2x size it takes 9-10% (task manager), with runahead enabled, it's 10-11%.
With Cyvern, it's 9-11% and w/runahead 11-13%.  Cyvern on Kaneko Suprnova HW is a Hitachi SH-2 game that uses every single cycle of it's emulated 28mhz cpu.  (it doesn't benefit from speedhacks like other Suprnova games)

best regards,
- dink

Cpu specs for scale?

[dink]

i7 2600

[el_rika]

Sounds amazing