Main > Raspberry Pi & Dev Board
Raspberry Pi MAME Arcade Project
crippledlemming:
The Raspberry Pi does not offer VGA out:
I'm using a HDMI to DVI adapter into a sinlge link dual DVI adapter. I think the issue is with the power running through the Pi not with the horsepower of the Pi. I'm going to try an upgraded power supply for the Pi tonight when I get home. I am currently using a 750mA adapter, and people who have been overclocking the Pi are recommending a 1000mA or greater supply.
Haze:
are you saying these things struggle to run Galaga without overclocking even when using a relatively ancient build like AdvanceMAME? or are you using a current build which is inherently more demanding due to various improvements.
If it's the former the Pi is even worse than I imagined....
pinballjim:
--- Quote from: Haze on September 20, 2012, 01:47:42 pm ---If it's the former the Pi is even worse than I imagined....
--- End quote ---
:stupid
Just... wow.
crippledlemming:
I'm using current source advancemame-0.106.1 for this project. The Pi is an ARM architecture computer vs the i386 or i686 that you may be used to. ARM is a cheaper/low power/mobile architecture not usually used in standalone computing solutions. It is most frequently seen in mobile phones, PDAs, and some lower end tablets. For $25 USD the fact that it can handle any of what I've put it through impresses me.
crippledlemming:
--- Quote from: pinballjim on September 20, 2012, 12:31:30 pm ---Why not use a VGA splitter if you're just mirroring the same output to both displays?
--- End quote ---
After doing some additional research it looks like I might run the risk of damaging my board if I continue with my current adapter:
(from the Pi forums)
Note that adapters like these who do not come with a power supply, but draw power from the PI may work, for some time, but can indeed damage the PI, as its not designed to power such devices through its HDMI port.
In particular the diode D1, near the port is designed for 200mA (and all power to the adapter runs through it) but these devices easily use double that. The power output on a HDMI port is designed only to power a small EEPROM containing the monitors specifications, and such devices draw a maximum of 50mA only.
There have been several reports from users of these devices that they have had burned out D1 Diodes.
Also using it this way may overload your power supply!
Generally speaking, either modify your PI, and use a PSU that can supply the extra 500mA, or only use adapters that come with their own power supply.
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