MAMEWorld Forums - EmuChat - Re: Capcom games little bugs

> > > > > EDIT 2: The game selection screen also looks oddly blueish... which does seem
> > > > > consistent with the other posted video!
> > > >
> > > > That just looks like the guy had the blue on the RGB knobs turned up too much,
> or
> > > the
> > > > G and R turned down too much. You sometimes have to adjust them for every pcb
> and
> > > he
> > > > didn't do it correctly for this game.
> > >
> > > see smf's reply, it's a weird issue with monitors that adjust their base voltage
> > > according to what it is at a certain position in vblank / vblank etc.
> > >
> > > most do this, but not all.
> > >
> > > maybe if one day MAME emulates different types of monitors (which in itself could
> > add
> > > another frame of lag) we might see simulation of how each different one reacts to
> > the
> > > signal, but until then MAME just assumes 'perfect, base voltage = 0 / black'
> while
> > > many monitors will do something else entirely.
> >
> > In regard to the bluish pic I was responding to, that is clearly from a pcb
> recording
> > setup where they have the blue adjusted wrong. It's not a pic of a monitor causing
> an
> > issue or else you would see scanlines. The pcb goes to the rgb converter then the
> > converter goes to the PC capture card and could also be split to also go to a
> monitor
> > but that wouldn't change the look of the capture.
>
> For comparison, here's both videos in the same post:
> https://www.youtube.com/watch?v=UiJeLfruoh4
> https://www.youtube.com/watch?v=UiJeLfruoh4

But they get there 2 different ways and have nothing to do with each other. The pic you posted doesn't prove anything. I've recorded hundreds of pcbs. That pic is a capture from a PC card after a pcb went through an RGB card/converter and the guy has the RGB settings wrong. It doesn't show anything in regard to a monitor having an effect. It's just random coincidence that some monitors do something similar to setting the RGB knobs incorrectly for a pcb in a supergun or similar setup. There's no scanlines in the pic and it's way too perfect for a camera, it's not from an arcade monitor.