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rastersoft / fbzx-wii

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Problems with Cyberbig #38

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
Cyberbig shows graphic garbage all across the screen when a game is started, in 
the intro screen, when the character turns and when there's any enemy on screen.

Also, the game over music sounds specially bad, but that's related to the other 
opened issue.

Original issue reported on code.google.com by iceknigh...@gmail.com on 7 Feb 2013 at 4:26

Attachments:

GoogleCodeExporter commented 9 years ago 
The game over music can also be heard in the pause screen, in case you need to 
know for testing.

Original comment by iceknigh...@gmail.com on 7 Feb 2013 at 4:28

GoogleCodeExporter commented 9 years ago 
That's a very interesting game for testing emulation.
The garbage is due to the non perfect emulation of FBZX Wii.
It depends on I/O contetion emulation.
If you use normal emulation the results are even worse.
Instead if you use +3 zx model, where the I/O contention is not emulated, the 
game works properly

Original comment by olimpier...@gmail.com on 8 Feb 2013 at 10:15

GoogleCodeExporter commented 9 years ago 
There's also a lot of screen corruption going on when a tape is played during 
the game, which interestingly also happens in another game by Animagic: 
"Mortadelo y Filemón 2 - Safari Callejero".

Original comment by iceknigh...@gmail.com on 17 Feb 2013 at 6:00

GoogleCodeExporter commented 9 years ago 
This depends on the fact that in turbo mode the precision is disabled to speed 
up the loading.

Original comment by olimpier...@gmail.com on 17 Mar 2013 at 1:45

GoogleCodeExporter commented 9 years ago 
I was wrong about Cyberbig.tzx

The corruption in Cyberbig is due the snow effect which is well emulated in 
FBZX Wii:

http://www.worldofspectrum.org/forums/showthread.php?t=40350 

Few emulators emulate this effect which is due to a bug in the ULA.

It would interesting to check if the effect is visible also on real hardware 
(in +3 zx model the bus was removed).

Original comment by olimpier...@gmail.com on 29 Mar 2013 at 9:00

GoogleCodeExporter commented 9 years ago 
I received the confirmation that Cyberbig is affected by snow emulation.

http://www.worldofspectrum.org/forums/showthread.php?p=692874&posted=1#post69287
4

Original comment by olimpier...@gmail.com on 6 Apr 2013 at 11:10