Unknown opcode fc at 03ba by TheUltimateKoopa at 3:16 PM EST on February 3, 2011

Every time I try and play GB files converted from some GBS sets, I get this message when I open the "ROM" in VBA. It seems to do it on Super Mario Land 2, and Wario Land (Super Mario Land 3).

The only reason I use VBA-M is that it's the most accurate emulator for sound, and also sounds better.

Is anyone able to help, or does anyone know why it works for most games, but not all? Like it'll work perfectly for something like Wario Land 2, or Super Mario Land, but not Super Mario Land 2?

If it means anything, I'm using GBS2GB 1.17

edited 3:17 PM EST February 3, 2011

by Franpa at 2:25 AM EST on February 4, 2011

Have you tried Gambatte?

by TheUltimateKoopa at 8:33 PM EST on February 4, 2011

It's the ROM itself, not the emulator. It's something to do with GBS2GB.

edited 8:37 PM EST February 4, 2011

by TheUltimateKoopa at 6:38 PM EST on February 10, 2011

Anyone? (Yeah, I'm talking about crap from the 90s, but you lot with your "OMG we don't give a shit about USF, GBS, NSF, or any of the older stuff")

by mudlord at 2:39 AM EST on February 11, 2011

I hate to enlighten you.

my mgme plugin for Winamp and kode54's foo_gep uses the SAME emulation code as VBA-M for GameBoy audio.

Accuracy to VBA-M then, in those 2 plugins only, is identical. And so, sound quality is identical too.

edited 2:43 AM EST February 11, 2011

by TheUltimateKoopa at 9:33 PM EST on February 13, 2011

But it doesn't have the Declicking, Enhance Sound or Surround things that VBA-M does in the "Audio Core Settings". This is version 1.8.0, I'm using, which I believe is the latest version?

by mudlord at 5:39 AM EST on February 15, 2011

http://sourceforge.net/projects/vbam/

Builds are there

1.8.0 IS OLD

And no, the core in that is accurate, so there is no point, and that it uses bandlimited synthesis.

by TheUltimateKoopa at 7:04 PM EST on February 15, 2011

September 10, 2010? That's the latest one, right?
Well, I downloaded Visual Boy Advance M 956, launched the thing, then went to Help > About, and it says:

VisualBoyAdvance-M Emulator
Version: 1.8.0 (SVN956)
Date compiled: Sep 10 2010

Copyright (c) 2008 VBA-M development team?

So, it was compiled only 5 months ago, yet the copyright is 3 years old? If Version 1.8.0 (SVN956) isn't the latest version, what is?

by TheUltimateKoopa at 9:33 PM EST on February 15, 2011

I already had the latest version. I'm still getting this stupid unknown opcode. So far it's specifically Super Mario Land 2 and Wario Land 2's GBS set, converted to GB ROM files with GBS2GB.

by mudlord at 8:45 PM EST on February 16, 2011

Then TELL ME to fix that error!

Maybe then YOU can motivate me to write that new GB-z80 emulator!!!!

OR you can use foo_gep or in_mgme which uses the EXACT SAME audio emulation code as VBA-M. And I wonder why you are converting the GBS to GB ROMs, which is BS.

edited 8:49 PM EST February 16, 2011

by mudlord at 8:00 PM EST on February 18, 2011

In short, use GBS with foo_gep, whatever.

You get the same result.

by TheUltimateKoopa at 11:49 AM EST on February 21, 2011

Declicking, Enhance Sound or Surround... what part of that don't you understand? AFAIK, only the VBA-M emulator has those features in it's sound settings. This is the exact reason why I'm converting GBS to GB.

I like the Enhance sound and surround sound things because it defaults the 2 square channels to left or right panning, and the other channel has a surround effect thing, because mono sucks.

edited 11:50 AM EST February 21, 2011

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