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by Grasshopper2
Mon Dec 12, 2016 12:23 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: HOWTO: Create Custom HDMI modes

Here the changelog. The documentation of AdvanceMAME for Linux is now valid also for RPi. If you need help, just ask ;) I'm still not seeing anything specific. All the instructions say is that "With a Raspberry Pi you have the same support you have in Linux, plus some specific Raspberry functionali...
by Grasshopper2
Mon Dec 12, 2016 12:05 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: HOWTO: Create Custom HDMI modes

Hi Grasshopper2, just take a look at latest AdvanceMAME release (3.0) with official Raspberry support . If properly set (after setting device_video_clock , also display_adjust should be set to generate_ ) it gives real native resolution with vcgencmd (of course only on HDMI and GPIO video output). ...
by Grasshopper2
Sun Dec 11, 2016 7:53 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: HOWTO: Create Custom HDMI modes

Hi, it seems that we are trying to achieve the same goal by different starting points. On the Recalbox forum I proposed to use the VGA 666 as "breakout" for CRT TV ( ironic-FR , I'm Scandy ;) ). Then I saw on Youtube the video of d33pblue . At least for arcade emulation, IMHO there is no need to se...
by Grasshopper2
Sun Nov 06, 2016 5:56 pm
Forum: Advanced users
Topic: Create framebuffer with non-square pixels?
Replies: 8
Views: 2741

Re: Create framebuffer with non-square pixels?

Hi, did you find a solution? Thanks Hi, I've been too busy to do anything with my RPi for several months so my information might not be up to date. But to answer your question, yes, there is indeed a solution. However, it's a bit of a hack. All you need to do is add the following line to your confi...
by Grasshopper2
Thu Aug 04, 2016 7:38 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: HOWTO: Create Custom HDMI modes

No current way from the firmware driver. It may be possible using the experimental arm side driver, but that's obviously experimental. It may be possible to provide a vcgencmd that allows updating the current custom hdmi mode, so the next HDMI mode change to the custom mode will use the new setting...
by Grasshopper2
Thu Aug 04, 2016 7:37 pm
Forum: Advanced users
Topic: Modifying Hdmi timings while system alive
Replies: 7
Views: 1126

Re: Modifying Hdmi timings while system alive

@aje_fr

Hi, can you tell me whether the board you mentioned earlier, that allows a Raspberry Pi to be fitted to an arcade cabinet is available for sale anywhere, and if so, can you provide a link?

Thanks.
by Grasshopper2
Thu Jul 14, 2016 11:57 am
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: HOWTO: Create Custom HDMI modes

Hello, I didn't had answer on my own topic, so i'm trying here :? (ie dom, please help me, you are my only hope) Well, I have two problems : - How could I update hdmi_timings when the system has already booted, I need to update screen resolution while system alive. It's for use with a cathodic moni...
by Grasshopper2
Tue Mar 22, 2016 6:06 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: Custom HDMI modes

Another issue with changing the framebuffer resolution using GPU scaling is that the driver always forces the pixels to be square, which is not necessarily what you want if you're emulating old hardware. The driver doesn't know or care what shape your pixels are. That is determined by the physical ...
by Grasshopper2
Tue Mar 22, 2016 5:58 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: Custom HDMI modes

floris497 wrote:Is this topic still open
I certainly hope so, because as far as I'm concerned, it's still an unresolved issue.

Being able to set up a single custom mode at boot time is better than nothing. But I really need the ability to create custom modes on the fly.
by Grasshopper2
Sat Mar 12, 2016 12:24 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: Custom HDMI modes

Certainly, if you're willing to use xorg vs the framebuffer. I'm sorry, but I don't really understand what you're saying. Can you elaborate? I'm aware that the framebuffer resolution can be changed after the RPi has been booted by, for example, using fbset. However, my understanding is that, if you...
by Grasshopper2
Sat Mar 05, 2016 5:55 pm
Forum: Gaming
Topic: ADVMAME - A "Beginners Guide" to Compiling and Using
Replies: 73
Views: 99310

Re: ADVMAME - A "Beginners Guide" to Compiling and Using

Hi, Can someone here tell me how to create a custom screen mode for AdvMAME for games that have non-square pixels such as Ghouls 'n Ghosts? I started a thread on this topic in the "Advanced users" section of the forum, but unfortunately I didn't get much of a response. https://www.raspberrypi.org/fo...
by Grasshopper2
Sat Feb 27, 2016 4:00 pm
Forum: Advanced users
Topic: Create framebuffer with non-square pixels?
Replies: 8
Views: 2741

Re: Create framebuffer with non-square pixels?

Thanks for the replies. However, I think you guys might be misunderstanding what I'm trying to achieve. Advance MAME is a program that emulates old arcade games, mostly from the eighties and nineties. Most arcade games from that era had a much lower resolution than modern TVs and computer monitors. ...
by Grasshopper2
Sat Feb 20, 2016 1:10 pm
Forum: Advanced users
Topic: STICKY: HOWTO: Create Custom HDMI modes
Replies: 177
Views: 204751

Re: Custom HDMI modes

Can someone tell me whether it's possible to create a custom HDMI mode 'on the fly' i.e. after the RPi has been booted?

Thanks in advance
by Grasshopper2
Sat Feb 20, 2016 12:22 pm
Forum: Advanced users
Topic: Create framebuffer with non-square pixels?
Replies: 8
Views: 2741

Create framebuffer with non-square pixels?

Hi, I'm currently experimenting with the Advance MAME emulator on my Raspberry Pi 2. Advmame has the ability to program the framebuffer driver to create a custom display mode that has exactly the same resolution as the game being played. And for performance reasons, I'd prefer to do this instead of ...

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