Main > Raspberry Pi & Dev Board

Raspberry Pi JAMMA

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RetroBorg:
I don't know and I can't run that test at the moment as my monitor has ---steaming pile of meadow muffin--- itself.

Jamesbeat:
correct me if I'm wrong, but it doesn't appear that there is anything inherent in the hardware that makes it safer than a regular pi when it comes to cutting the power.

The ability to cut the power appears to come from the software, in that mame just doesn't write to the sd card all that often.
This is probably why I have never managed to corrupt my card either.

obcd:
it's not only mame that might write to the sd card. The os could do some writes as well.
The /var/log folder is one location where you could expect some writing.
You can use a read only rootfs and still have an additional partition on the sd card that is mounted read / write to store the high scores.
While this might not give a 100% guarantee against corruption, it will already improve things a lot. The next step could be the use of a small usb stick with that read / write partition for the high scores. Such a setup might allow the sd card to be fully read only.
The only other reliable way to turn off the power is with a backup power source that allows the system to proper shutdown before the power is fully removed. This requires a combination of software and hardware to do things properly.
SD cards have their own controller that performs some background tasks like remapping sectors to pages ready for erases. Some brand of cards will corrupt faster than others, depending upon the firmware implemented in those controllers. That's also why they corrupt more frequently than a setup that uses a traditional harddisk.
If you find the Jamma board 2 expensive, simply don't buy it and build your own (cheaper). There is no need to post bad about it simply because you find it 2 expensive.   

Jamesbeat:
I don't know if that last part was directed at me, but if it was I'd like to clarify that I think this board is great.
The price is reasonable for a low quantity custom pcb with a relatively small target market.

There were some people that were hoping that this device would somehow make it safe to pull the plug without fear of corrupting the sd card.
I was merely pointing out that it has no real provision in the hardware (ie backup power) for shutting down the pi correctly on pulling the plug.

opt2not:
I have absolutely no problem with the price personally. I'd gladly pay that price if it can work for my set-up.  $150 USD's is a great price considering those crappy chinese-made multiboards are like $100 after shipping, and they're mostly garbage for emulation.

I really want this to be the all-in-one solution for having the customization of an emulation machine, proper video/audio and controls output for Arcade cabs, at the durability of an arcade PCB. For me, this is almost there barring solving the power-down issue.

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