Updates!

I have gotten somewhat of a picture to have display (IGNORE THE MESS 🤣)

https://i.imgur.com/uCDczXZ.jpeg

This was achieved using the following modelines in the config.txt

hdmi_ignore_edid=0xa5000080 config_hdmi_boost=4 hdmi_group=2 hdmi_mode=87 hdmi_force_mode=1 hdmi_timings=1024 0 48 104 152 768 0 3 4 23 0 0 0 60 0 88509090 1

It's still obviously very distorted but what is odd that the pixel clock I'm using, 88.5MHz was the only way to get some semblance of an image. However according to the manual for my display it should be a pixel clock of 64MHz for 1024x768 60hz (resolution I'm using rn) and a pixel clock of 108.18MHz for 1280x1024 60hz

Any reason why the pixel clock is so off? Is my code still wrong? Ultimately I think this will boil down into me opening up the CRT and messing with the sync pots but I'd like to avoid that if possible.

Any further guidance or help is greatly appreciated 😄.

@dankcushions Alright thank you already! I do know it's possible to wire it like that but im more worried to how some games will respond to it when trying to play solo. I guess I will keep it simple for my first build and just use 2 separate ones.

@fishermanbill said in Making 'overscan' work on an LCD screen:

@dankcushions so you'd need to set up a config for every arcade that has a overscan output? There's an awful lot of them - eek!

unfortunately it’s probably necessary. it’s possible to automate some of this stuff - i believe i experimented with letting them overrun by a certain tolerance when developing https://retropie.org.uk/forum/topic/4046/crt-pi-shader-users-reduce-scaling-artifacts-with-these-configs-in-lr-mame2003-lr-fbalpha-lr-nestopia-and-more-to-come

the issue is that arcade machines, unlike console games, had CRTs that were manually configured for the game. so they often have crucial gameplay info (eg score) running right to the edge of the image, because they knew an engineer/arcade operator would be adjusting the CRT to suit.

for this reason it’s probably not safe to automate an amount of ‘overscan’ in arcade games.

You allude to being able to figure out the custom resolution but how would you do that from config files?

you have to manually do it whilst the game is running

Also how do you see your change where it outputs the resolution on screen?

when you adjust the resolution in the menu it should be visible behind, no? the menu is translucent.

Ok so in the end I did have to brutalize a little the battery compartment. Whittled away a little of the plastic around the usb connector in the back to get my OTG cable to fit. Got the keyboard working and now the cfg was created finally. Now I just have the basic problem of controls not working as expected. Seeing as how the NES30pro controller uses the the d-pad buttons as axis controls and not as legitimate buttons, i need to get the axises to the cfg the right way.

I've seen people just switching to a Dualshock type in the controls menu but I'm missing this option as well. The troubles never end.

@dankcushions ah wow I didn't know that. Still though, not sure I can get much overclock put of pi zero anyway, a few online mention 1080 or so, but I doubt that'll give a significant boost to be worth it.

yes it works well in fbneo

Thanks @brandflake11

I got this one figured out. It was a PITA! :)

Long and short of it is this...

xrandr treats both displays and one large one (extended). You can see below that Screen 0: is recognized as 5760x1080 (4K TV + 1080P monitor):

Screen 0: minimum 320 x 200, current 5760 x 1080, maximum 16384 x 16384 VGA-1 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) HDMI-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 800mm x 450mm 3840x2160 30.00 + 24.00 29.97 23.98 4096x2160 30.00 24.00 29.97 23.98 1920x1080 60.00* 59.94 30.00 24.00 29.97 23.98 1920x1080i 60.00 59.94 1680x1050 59.88 1280x1024 75.02 60.02 1440x900 59.90 1280x960 60.00 1280x800 59.91 1152x864 75.00 1280x720 60.00 30.00 59.94 29.97 24.00 23.98 1024x768 75.03 70.07 60.00 800x600 72.19 75.00 60.32 720x480 60.00 59.94 720x480i 60.00 59.94 640x480 75.00 72.81 60.00 59.94 720x400 70.08 DP-2 connected 1920x1080+3840+0 (normal left inverted right x axis y axis) 509mm x 286mm 1920x1080 60.00*+ 50.00 59.94 1920x1080i 60.00 50.00 59.94 1680x1050 59.88 1280x1024 60.02 1440x900 59.90 1280x800 59.91 1152x864 75.00 1280x720 60.00 50.00 59.94 1024x768 70.07 60.00 800x600 60.32 56.25 720x576 50.00 720x480 60.00 59.94 640x480 66.67 60.00 59.95 59.94 720x400 70.08 HDMI-2 disconnected (normal left inverted right x axis y axis)

This is what my autostart.sh file looks like:

#! /bin/bash #set primary display and resolution. xrandr --display :0 --output HDMI-1 --mode 1920x1080 --primary & #call cvlc to play a startup animation. Wait for it to end before continuing. cvlc --random --play-and-stop --play-and-exit --fullscreen --video-on-top --no-video-title-show --quiet --gl=any --preferred-resolution=1080 ~/RetroPie/splashscreens &> /dev/null #start ES in a terminal (openbox). gnome-terminal --full-screen --hide-menubar -- emulationstation --no-splash

Naturally, feh sees the display the same way so you need to use the --geometry switch to identify the starting pixel on the 2nd monitor. This is what my runcommand-onstart.sh looks like:

#! /bin/bash ROMPATH="$3" ROM_BN_EXT="${ROMPATH##*/}" ROM_BN="${ROM_BN_EXT%.*}" CONTROLSIMAGE="/home/pi/RetroPie/roms/$1/images/$ROM_BN-controls.png" feh --geometry +3840+0 "$CONTROLSIMAGE" &>/dev/null &

This essentially gets the full path to the romfile and trims the extension to get the rom base name.
It then builds the path to the controls image I need and displays at the starting position I tell it to (3840x0) which is the entire screen of the 2nd monitor. When I exit the game, and merely kill feh via runcommand-onend.sh:

#! /bin/bash killall feh &

This is working perfectly. Now I just need to find a fancy graphic to display on the 2nd monitor when it isn't showing controls. :)

John

@luckyluca said in Some roms not working with lr-fbneo:

The only reason why I haven't updated the core yet, is that I don't know if doing so might affect other systems I already built, and would necessitate updating their roms too (neogeocd for instance, and anything else I might not think of right now).

Your version is over 6 months old, so no doubt there will be romset updates/additions (we probably added over a dozen of new systems since then), neogeo cd won't be a problem though.

@flynnz said in Long Press to exit or reset game.:

I am trying to understand what you mean. I can use the 'press hold for 3+ seconds to exit' as long as I don't use a hotkey?

Yes, that was the wording, but I think I've confused the exit option with some other binding - I can't find any exit related option in RetroArch's menu.

Commit https://github.com/RetroPie/RetroPie-Setup/commit/ee74dbdf223f8dd99d5457c4563bd7f92e156ed8 has fixed the issue.

Thanks you @mitu

@codafire

Hi. You kinda skipped a few steps in describing the issue. What emulator are you using. What version of Retropie? RetroArch? There are 4 emulator options for Dos and each is slightly different version from each other. So that's really important.

Also... Are you saving the config to the same file or renaming it to a new one? How are you doing this in the emulator? Do you know how to look at the files of RetroPie? If so, what does the .map file say?

@vulture2600

try

framebuffer_priority=7

in config.txt

(works for me, I had to move from hdmi 0 as my fat micro hdmi adapter was pressing against the usb-c power connector)

framebuffer_priority=7

was the only option I needed in config.txt to get emulation station to work from hdmi 1.

(I needed to use this as the fat micro hdmi adapter I was using pressed against the usb-c power connector)

These are the only options I have set in config.txt (audio and video on second hdmi port 1 work fine in emulation station)

framebuffer_priority=7 # OVERCLOCK SETTINGS arm_freq=1800 # CPU Frequency gpu_freq=600 # GPU Frequency over_voltage=2 # Electric power sent to CPU / GPU (4 = 1.3V) dtparam=audio=on # Enable DRM VC4 V3D driver on top of the dispmanx display stack dtoverlay=vc4-fkms-v3d max_framebuffers=2

You can use a similar solution to the one in this post, where the requirement was to have the Pause function being triggered without a hotkey.

@bberlin1 unfortunately you probably will have to

@billydent no problem. Glad I could help.