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Found 2 results

  1. Download the palettes here [updated 8/30]: 2X7-PROSYSTEM_20130830.zip The '2X7-PROSYSTEM' palettes (25.7 degrees --> 26.7 degress --> 27.7 degrees)... NTSC: PAL: Why? Technically the phase shift of the 7800 is ~25.7; actually, 25.714 according to the math here... https://sites.google.com/site/atari7800wiki/rgb (Thank you Eric Ball). The reality though is most (all?) 7800 systems fluctuate the phase shift higher as the system 'warms up'; additionally there is a variable resistor which also impacts the ultimate end results. The color references affected the most - and consequently most noticeable - are values E$ and F$. At the 25.7 setting colors 1$ and F$ match near exact. To the naked eye they in fact look exact. According to the books this would be proper having a 180 degree color-burst resulting. However, even a new system I obtained within the last year does not stay at that degree. There is a deviation from it, resulting in the shift going higher than 25.7 degrees. The question is how much greater do we go? Simply stated, color F$ more realistically ends up between the hue of Color 1$ and 2$; darker than 1$, but lighter than 2$. If we set the phase two degrees higher (27.7) we end up with colors E$ and F$ as a near exact match of colors 1$ and 2$. Some systems, including one of my own, phases this much and even higher (~28.7) over several hours (To the point where E$ and F$ fall in between 2$ and 3$ in hue - and most other values almost look like they have shifted a complete row (I.E. 8$ starts to look like a 9$, 9$ starts to look like a A$, etc.); but now that is swinging the pendulum too far in the other direction. So, if 25.7 is technically accurate, but hardly remains the reality, and 27.7 brings too much of a phase shift to the palette, then a happy medium would be 26.7. Setting the phase to 26.7 we obtain a color F$ that is in between the hues of color 1$ and 2$. MESS, in fact, has F$ documented (Thank you Dan Boris) as a 'light orange' range, whereas 1$ is a 'gold' range and 2$ is a 'orange' range. Additionally, we obtain light browns from 1$, while now having darker browns set under F$. Looking at color E$ under the 26.7 setting, it falls right as a 'pea soup', the 'Linda Blair special', puke-ish green throughout; placing it in between a green and a brown color. Going back to 25.7 causes E$ to become a stronger green on the lower end, swinging the pendulum to 27.7 makes E$ a brown color. The often noted intension is for the E$ range to fall between a green and a brown; it is arguably better achieved at 26.7. The extensive work done in brightness, contrast, saturation with the literally hundreds of palettes created and viewed across half dozen displays, along with the input of the community, has helped achieved a nicely saturated and bright palette setting from the base values as shown above. That is easily adjusted and open to interpretation of course, so if you want something more/less saturated, brighter, etc...Just ask. Additionally, the "BASE" palettes are being included for those who perhaps just want the base values and/or like to self-adjust saturation, brightness, contrast, etc. BASE '2X7-PROSYSTEM' palettes (25.7 degrees --> 26.7 degrees --> 27.7 degrees)... NTSC: PAL: Unlike the GCCFINAL palettes, we are not looking to factor in a wide range of television tints or pot adjustments. These palettes presumes a properly calibrated/pot adjusted 7800 and a television which falls within a neutral tint setting - and expects similar from the monitor it is being displayed upon. It's almost a certainty that programming color choices were made on systems with a variety of phase settings as well. For instance, some games like Choplifter! and Midnight Mutants look better with a higher (27.7) phase shift, but others like Pole Position II and Joust look better with a lower (25.7) one. Here is a look at Choplifter! - (25.7 --> 26.7 --> 27.7): Notice how much better the sky and ground appear with a system that phase shifts higher. Here is a look at Joust - (25.7 --> 26.7 --> 27.7): Notice how bad the enemy bird wings look with a higher phase shift. They lose their green. Just to emphasize, the above are not utilizing any tint/hue control or manipulation. There is no manual changing of RGB values or proportions. This is not the same as a television display tint/hue control. This comes strictly from the console itself and is not a pot adjustment either. *Note to 7800 game developers: Avoid color E$ like the plague!* Interestingly enough, a 'perfect Fuji' (Enable the BIOS) demands '257-PROSYSTEM' - and it is the technically accurate ideal, if not actually experienced for a long duration of time. Here is the Fuji captured under NTSC (25.7 degrees --> 26.7 degrees --> 27.7 degrees): *The differences are likely less noticeable on a CRT especially when animated, but still worth noting* If you have a system that truly sticks to a 25.7 degree shift, it's covered here, as well as those going beyond, 26.7 degrees, up to 27.7 degrees. UPDATE 8/28: Received request for less saturated palettes. Lighter/less saturated palettes have been added. Here are the '2X7-PROSYSTEM-LT' palettes (25.7 degrees --> 26.7 degrees --> 27.7 degrees)... NTSC: PAL:
  2. I'm able to run Stella on Linux by installing the binaries or even building it from sources, but for 7800 games I don't have that option. Has anyone been successful in running the ProSystem emulator using WINE? Is it difficult to set up the Windows environment in Linux to run Windows programs under WINE? Would it be easier to build MESS from the source files? Thanks in advance for any suggestions you might have to offer.
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