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SubjectRe: Resolutions Reply to this message
Posted byVictor_Maitland
Posted on01/09/01 09:01 PM



I am running pocketPC for the E-125, would I notice an improvement by switching to E-10X? Is it compatible with my system?

Vic

> As you are noticing, arcade games were all unique beasts.
> (Almost) every one was unique. Among the differences were the size and
> orientation of the screen. The orientations can generally be classified as
> 'horizontal' and 'vertical'. Obviously, games with vertically oriented monitors
> are more suitable for PSPC/PocketPC devices with their taller-than-wide aspect
> ratio (and the reverse is true of desktop monitors).
> Resolution is a bit more complicated. The original arcade games each had a
> fixed resolution (i.e. Galaga's display is 224x288, 720 is 512x384). Desktop
> monitors are usually able to display a wide variety of different resolutions,
> espically with some of the tricky programming techniques the MAME guys know :).
> So by carefully selecting an appropriate resolution, combined with possibly
> doubling the pixels of the original, MAME is in most cases able to make most any
> game fit pretty well on your desktop monitor.
>
> With PSPC/PocketPC's the story is rather different. Our devices don't have
> monitors which can make a display of different resolutions; we are stuck with a
> LCD of a fixed resolution (240 wide x 320 high). It is just coincedence
> that many 'classic' arcade games, espically those with vertical monitors, has
> resolutions which fit very nicely in this display (SI, Pacman, DK etc etc).
> However, those with horizontal monitors often don't quite fit (i.e. GnG is 256
> wide; 16 pixels more than available). There are quite a few options as to what
> to do about that, the simplest of which is currently implemented: you don't see
> the right-most 16 pixel-columns of the game. Other options include splitting
> the difference (dropping 8 from each side), and 'squeezing' the image (i.e.
> dropping 16 pixel-columns evenly spaced from within the image). I'm working on
> implementing the split-the-difference method in MAMECE-10X. The 'squeeze'
> method would slow down the screen-drawing routine; and I can't come up with a
> nice reliable elagant algorithm to make it happen for all cases (remeber, we've
> only considered one case here, many many more exist).
> Another possible solution for the horizontal-monitor games
> which are slightly-too-wide is to rotate the display 90deg so it fits. This
> usually works fine for the display, however it often leaves the controls very
> difficult to use when the device is held that way :( not to mention that the
> display has a columnator [sp?] so it's more difficult to look at in any
> orientation other than 'normal'. I've only used this method for Track & Field
> because it only requires buttons for input. Most games require joypad & at
> least one button, which is difficult to do when they are on the same side of the
> device when held sideways. (things may be different for the iPaq, whose owners
> are used to having to play games using the press-the-joypad method for
> shooting).
>
> Another 'special case' arises for game whose resolution it roughly twice that of
> our devices. In these games, a potential solution is to simply show every-other
> pixel in every-other line of the display. This is relatively simple and fast to
> do (versus other more general stretching/squeezing an image). This is what I've
> done to allow me to enable (and see the screen of :) the MCR games; including
> Tron. See my webpage at http://www.geocities.com/dgfinck to see how it looks :)
> Obviously, you lose some of the detail when you're only displaying 1 of every 4
> pixels from the original, but it's still very usable.
>
> To finish answering your question: forget 720, and in King Fu Master you should
> only be missing the right-most 16 columns, just as in GnG, so it shouldn't be a
> big deal.
>
> Darren
>
> > I have the Casio E-125. Has anyone had any screen resolution issues? Ive had
> > problems with 720 and Tron, and Kung Fu master so far.The screen goes off into
> > never never land. Much too big for the screen. Is there a fix?
> >
>




-
Entire Thread
Subject  Posted byPosted On
*Resolutions  Victor_Maitland01/09/01 04:03 AM
.*Re: Resolutions  Anonymous01/09/01 01:47 PM
...Re: Resolutions  Victor_Maitland01/09/01 09:01 PM
...*Re: Resolutions  Anonymous01/09/01 10:28 PM
....*Re: Resolutions  Victor_Maitland01/09/01 10:46 PM