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psx: Remove failed experiment [O. Galibert]

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This commit is contained in:
Olivier Galibert 2011-09-14 13:42:43 +00:00
parent fc747c1f51
commit 6dc2e2c8c1
1 changed files with 2 additions and 22 deletions
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24
src/emu/video/psx.c
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@ -3641,28 +3641,8 @@ void psxgpu_device::vblank(screen_device &screen, bool vblank_state)
DebugCheckKeys();
#endif
// It seems like disabling the screen disables the vbl irq,
// but with a one vbl delay.
// Fixes sianniv (which breaks without the delay, too).
// Perhaps breaks other things, there are 1e6 psx-based games..
// Needs to be checked throughly and if it's ok implemented
// way more cleanly.
static int delay = 0;
if(( n_gpustatus & ( 1 << 0x17 ) ) != 0)
{
if(delay < 2)
delay++;
}
else
delay = 0;
if( delay != 2 )
{
n_gpustatus ^= ( 1L << 31 );
psx_irq_set( machine(), 0x0001 );
}
n_gpustatus ^= ( 1L << 31 );
psx_irq_set( machine(), 0x0001 );
}
}