Attract in 640/480 but with a 240p Horizontal setup

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AstroCab
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Attract in 640/480 but with a 240p Horizontal setup

Post by AstroCab » Tue Mar 27, 2018 5:42 pm

I was wondering if it woud be possible to have attract launch (correctly centered) in 640x480
This makes everything look better than 240P Horizontal (hdmi group 1 mode 8 in config.txt)

I tried setting hdmi group 1 mode 1 (640x480)and that works but the attract screen is not centered anymore
Is it possible to adjust the config.txt so that it centers the attract mode screen like it does when on 240p horizontal?
the

dee2eR
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Re: Attract in 640/480 but with a 240p Horizontal setup

Post by dee2eR » Thu Mar 29, 2018 12:09 pm

Tri-res monitor? I'm a bit jelly.
There may be a 480p setting that is closer to matching 240p but you would need to try a few and see what works. There are 3 or 4 480p modes you could try, although I can't offhand remember what they are. Can't really adjust them though, you're limited when using the available boot resolutions, if you adjust the overscan to center it all other resolutions will also be changed. You might be able to do it with a custom res but you wouldn't be able to boot into it directly, you would have to change the resolution before launching the menu using /boot/run.sh (like how the res is changed when a game is launched). I don't have a definitive answer for this, it may be possible, maybe not.

Depending on what your monitor can do maybe slightly higher resolution again would be more centered when compared to the 240p output.

480i is perfectly centered with 240p as they're essentially the same resolution, but I guess you're avoiding it due to flicker...

The only tri-res CRT I ever had (TV not arcade monitor) murdered 240p but was awesome otherwise, except the weight.

AstroCab
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Re: Attract in 640/480 but with a 240p Horizontal setup

Post by AstroCab » Fri Apr 06, 2018 7:38 am

Hi Dee2er,

I kept it at 240p..works really good so im going the "if it works to break it" route ;-)
Love the Arpicade man it's awesome, i went bloating it all with video-snaps for all game, even the console ones :D
I got the genesis and pc engine, playstation and arcades with mame & fba..im very happy with this
Now to find the time to play!

Ow, perhaps another suggestion, trivial really but nonetheless,

i added the following command to the .bashrc file so i could see the time on the prompt ones logged in over ssh, how easy you loose track of time and when the terminal is maximized!!.. :D

i added this to .bashrc file:

export PROMPT_COMMAND="echo -n \[\$(date +%H:%M:%S)\]\ "

dee2eR
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Re: Attract in 640/480 but with a 240p Horizontal setup

Post by dee2eR » Fri Apr 06, 2018 1:38 pm

You've given me a slightly different idea too. The basic safety checks in the res switching script in the new release would actually stop tri-res monitor users from being able to boot in 480p and then run games at 240p. If there is demand for doing so I should add an extra option for it so it is possible.

The time idea isn't bad either. It would help me notice when the Pi is way out of date when it hasn't been online for a while (no RTC), which can cause issues if you download and edit source code on a desktop and compile on Pi.

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