Homebrew StellaDS V1.2 (DSi Entry)

[israelg]

Hi, Please port StellaDS also to SuperCard Two (Like the 7800) for improving speed since
they are still many good games that run very slow (Pitfall, Chopper command, Hero, Space Invaders Etc.)

Very nice work...

Thanks...

I.G

 

[alekmaul]

Hi, Please port StellaDS also to SuperCard Two (Like the 7800) for improving speed since
they are still many good games that run very slow (Pitfall, Chopper command, Hero, Space Invaders Etc.)

Can't do that sorry, because Stella uses C++ and DSTWO sdk is not compatible with C++ ...
Tried to port another emu (z26) but it's too slow on DSTWO (around 30 fps ...)
So, no, we will not have a special version for DSTWO

 

[israelg]

Hi, Please port StellaDS also to SuperCard Two (Like the 7800) for improving speed since
they are still many good games that run very slow (Pitfall, Chopper command, Hero, Space Invaders Etc.)

Can't do that sorry, because Stella uses C++ and DSTWO sdk is not compatible with C++ ...
Tried to port another emu (z26) but it's too slow on DSTWO (around 30 fps ...)
So, no, we will not have a special version for DSTWO

So do you it is possible running games like Pitfall, Chopper command and Hero in full speed ?

Maybe using frame skipping technique ?

Lowering the audio quality ? (no audio will be very sad but it also an option)

What do you think ?

Thanks

I.G

 

[Another World]

well this project does indeed run in ds-mode it is geared towards the ievo and dsi-mode. there is a noticeable speed increase when using it in dsi-mode. is it perfect? - no, some games (pitfall II) still run at an unplayable speed even in dsi-mode.

as alek already said a speed increase would be difficult although he will look into it.

About speed, well it's near full speed on DSi, yes, i tested it with a DSi of a friend. I will try to increase it more but it is not simple ...
I think it's faster than TheChuckster release but far for a full speed thing ...
I will try to find a way to see where the slowdown are the more important.

-another world

 

[Buleste]

Hi, Please port StellaDS also to SuperCard Two (Like the 7800) for improving speed since
they are still many good games that run very slow (Pitfall, Chopper command, Hero, Space Invaders Etc.)

Can't do that sorry, because Stella uses C++ and DSTWO sdk is not compatible with C++ ...
Tried to port another emu (z26) but it's too slow on DSTWO (around 30 fps ...)
So, no, we will not have a special version for DSTWO

It would be possible to change all the C++ code to be C compliant though. However it would take a lot of work and it's just a matter of finding someone willing to do this.

 

[alekmaul]

OK, new version available, see first post for comments about this version.
Will now try to fix games with problems (like starpath or some bin files ...)
If an admin can change the title of the thread ...

 

[israelg]

Great !!! I will test this later...!

 

[Another World]

i fixed the thread it now says v1.1.

did you figure out why the .a26 files are cut off (cropped) when the .bin are not?

cheers,
-another world

 

[alekmaul]

what do you mean exactly with "cut off" ?
Is it the pb with screen aspect that is not nice (like we saw in previous post on this thread) ?
If so, it's perhaps a pb with pal/ntsc settings that are not correct in this version.
Will try to fix it for the next one.

 

[Another World]

yeah, that is what i was talking about.

-another world

 

[inacito]

Tested new version, paddle emulation seems a bit strange. Breakout works fine, but Night Rider is unplayable, goes to the left all times.
And the "cut off" effect cuts off at the right side too, I've tried Video Olympics and in the one player games you do not see your paddle. Also it's awkward to go left and right when the movement is up and down

Hope you can fix it all, thanks for this great emulator.

BTW, have you seen my post about savestates in the SC2 A7800 thread?

 

[alekmaul]

ok, will try to find the pb with Night Rider.
Fix pb with height when switching between pal ntsc

 

[israelg]

Report:

Very nice update:

Kaboom is playable with the new paddle support...!
Difficulty is very nice feature, tested with space invaders...

How can I display FPS with this new version ?

Still waiting for the performance improvements...

Thanks!

I.G

 

[NortenoDelSur]

Maybe a DSTWO version??

It would be great!!

 

[Evo.lve]

Hi, Please port StellaDS also to SuperCard Two (Like the 7800) for improving speed since
they are still many good games that run very slow (Pitfall, Chopper command, Hero, Space Invaders Etc.)
Can't do that sorry, because Stella uses C++ and DSTWO sdk is not compatible with C++ ...
Tried to port another emu (z26) but it's too slow on DSTWO (around 30 fps ...)
So, no, we will not have a special version for DSTWO



QUOTE(NortenoDelSur @ May 28 2011, 12:28 PM)

Maybe a DSTWO version??

It would be great!!

lern2read

ffs

 

[alekmaul]

** UPDATE **
New version added, see the first post for log of changes

 

[israelg]

Thanks for the FPS...

I will test the new version later and give you some FPS numbers for slow games...

Any performance improvements ?

I.G

 

[israelg]

H.E.R.O. - 27 FPS
Kaboom! - 35 FPS
Pitfall - 30
Space Invaders -38
Pac Man - 40
Phoenix 50
Chopper Command - 30
Defender - 48
Demon Attack - 45
Laser Blast - 35

I think that 35 and above FPS is playable lower than this heart the game-play...

What about frame skipping ? I think that even one frame skip will help the lower FPS games...?

Thanks

I.G

 

[israelg]

???

 

[alekmaul]

???

What do you mean with this last reply ?

If it's that I read your reply about frame skipping, the answer is Yes. But it's not really easy to do such thing with Stella emulator.
I will try to find a method to optimze again the emulator, but I need more time , sorry about that.