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51
FBA Development / Re: dink's FBA Development & Fixes thread
« Last post by Treble Winner on May 26, 2018, 05:23:59 am »
Is it this crash?

If so, it also happens on hardware at random too.
52
FBA Development / Re: dink's FBA Development & Fixes thread
« Last post by dink on May 26, 2018, 12:21:38 am »
Double Dragon.
This game has been kinda bugged since before I can remember.....  With the first report coming from my friend Zazzone back in 2014.  Weird slowdowns, flickering sprites, crash at end of game w/2players (I've personally experienced this happen -twice-.  It's heartbreaking.).  eek.   Well, finally some good news: this has all been fixed with a few small changes to lessen contentions caused by the subcpu and main<->sub comm. ram.

Best regards,
- dink
53
FBA Development / Re: dink's FBA Development & Fixes thread
« Last post by dink on May 26, 2018, 12:14:11 am »
el_rika, sorry about the late response.  I will do some research and see what has changed on a good day :)

best regards,
- dink
54
FBA Development / Re: FB Alpha 0.2.97.43 Bug Reports
« Last post by iq_132 on May 25, 2018, 09:18:29 am »
Treble Winner,
I've been wanting to fix the chiki one for ages, but forgot about it actually.  I verified that they both happen in past versions.  chiki since I've been with the project.  Captcomm always did the raster a bit wrong, but didn't write the weird character above until around the time of the new m68k core.  You probably didn't notice the problems because they only happen for a frame or 2 during raster effects (scroll register hackery) by the game.

chiki/captcomm actually run at 262 lines (which can be verified in the emulator encyclopedia aka MAME), having it at 259 previously was basically running vbl at the wrong line.  secondly, drawing after vblank is bad for any raster effect.
Explanation: after vbl and until line 16, the game prepares some the next scene / scroll registers / etc.  The reason for the glitches is simple, the game was drawing during the preparation of the next scene.

best regards,
- dink

Can confirm:
MCFG_SCREEN_RAW_PARAMS(XTAL(16000000)/2, 512, 64, 448, 262, 16, 240)

That should also put our fps to 59.637404580152671755725190839695 hz ^^
(1600000/2/512/262)
55
FBA Development / Re: FB Alpha 0.2.97.43 Bug Reports
« Last post by Bonky0013 on May 25, 2018, 08:19:10 am »
Hi ^^

Fixed so fast ^^
Thanks  :biggrin:


These two problems was very old  ;)
56
FBA Development / Re: FB Alpha 0.2.97.43 Bug Reports
« Last post by dink on May 25, 2018, 08:16:39 am »
Treble Winner,
I've been wanting to fix the chiki one for ages, but forgot about it actually.  I verified that they both happen in past versions.  chiki since I've been with the project.  Captcomm always did the raster a bit wrong, but didn't write the weird character above until around the time of the new m68k core.  You probably didn't notice the problems because they only happen for a frame or 2 during raster effects (scroll register hackery) by the game.

chiki/captcomm actually run at 262 lines (which can be verified in the emulator encyclopedia aka MAME), having it at 259 previously was basically running vbl at the wrong line.  secondly, drawing after vblank is bad for any raster effect.
Explanation: after vbl and until line 16, the game prepares some the next scene / scroll registers / etc.  The reason for the glitches is simple, the game was drawing during the preparation of the next scene.

best regards,
- dink
57
FBA Development / Re: FB Alpha 0.2.97.43 Bug Reports
« Last post by Treble Winner on May 25, 2018, 05:56:39 am »
Bonky0013, problem with captcomm also fixed :) thanks!
note to others; the problem happens while the Captain Commando text is being displayed with a raster effect.

best regards,
- dink

Did these bugs happen in older versions as well? The fixes are hacky at best and indicate a problem with our timing which probably needs further investigation. Especially if they worked fine in previous versions.
58
FBA Development / Re: FB Alpha 0.2.97.43 Bug Reports
« Last post by dink on May 24, 2018, 05:50:56 pm »
Bonky0013, problem with captcomm also fixed :) thanks!
note to others; the problem happens while the Captain Commando text is being displayed with a raster effect.

best regards,
- dink
59
FBA Development / Re: FB Alpha 0.2.97.43 Bug Reports
« Last post by dink on May 24, 2018, 04:53:43 pm »
Bonky0013, thanks.  chiki video glitches are fixed :)

re: captcomm
I can't reproduce this problem.  is the romset OK?  how about CPU speed - is it at 100%? (Game -> Reset CPU speed to 100%)
will you post your config/games/captcomm.ini file?

EDIT I found the problem!

best regards,
- dink
60
FBA Development / Re: FB Alpha 0.2.97.43 Bug Reports
« Last post by Bonky0013 on May 24, 2018, 11:18:20 am »
Hi Barry :)

Look on the picture, you can see just up to AI of captain the problem ;)
When the title appear.
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