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Problems with Castlevania COtM

Posted: Sat Sep 27, 2008 2:07 pm
by Cobra951

I've been playing through COtM for a few days now under SVN 727. Since the game uses 2 control mechanics that require discrete directional inputs (UP for special attack, implying lack of an up vector in the input to avoid launching special attacks; and double-tap to dash) I opted for using the keyboard.

 

The problem is that joint inputs fail very often. I sometimes have to hold UP for at least a second before the attack button will dutifully respond by throwing an axe rather than whipping. I tried the game under VBA 1.8 beta 3, and did not experience this lag in double-input response. Nyko-pad input on both emulators also works fine. KB-polling problem of some sort?

 

When I got to the final boss, I experienced severe virtual-machine slowdown during the battle with his last form. There are less-pronounced slowdowns during other boss battles as well. This problem does not happen in VBA 1.8 b3. (I'm inclined to think that this may be an audio issue, but perhaps the breakups there are only a symptom.)

 

On the plus side, VBA-m displays card and DSS information. (VBA 1.8 b3 shows only a blank.) VBA-m uses significantly less CPU, allowing me to use a better 2x filter. Thank you so much for your good work.

 

My system: Dell Dimension 8100, 2.4-GHz Northwood P4, intel 850 motherboard, 768 MB dual-channel RDRAM, Nvidia 128MB 256-bit GF FX 5900, Creative Audigy 2 audio card, Windows XP.


Problems with Castlevania COtM

Posted: Sat Sep 27, 2008 8:04 pm
by Squall Leonhart

attach your battery file.


Problems with Castlevania COtM

Posted: Sun Sep 28, 2008 3:50 pm
by Cobra951

Here is a rar file with the battery file and a save state from SVN 727 at the final battle. This guy's easy with summoning magic, but take him on with the whip and a ghost familiar (DSS: Saturn + Serpent, activate with L). Heal with Uranus + Unicorn as needed (D, DR, R, RU, U, attack). The slowdown is most evident while there are many things happening onscreen, such as when he is in multiple-bat form and the familiar is whittling him down. It's not my PC struggling--performance stays at the usual 98-100% without fail.

 

The game in question on the battery file is the 2nd slot, WAMPYR. I have the emulator set for no throttle, no frame skip, synched to audio. Audio API is DirectX, 44.1 kHz with interpolation and the filtering option around 2/3rds to the right.

 

Thanks!


Problems with Castlevania COtM

Posted: Tue Sep 30, 2008 4:39 am
by Squall Leonhart

I can't reproduce these at all, so they must be a configuration problem.