MAME 0.171 for Raspberry Pi2 – And it’s playable!

[Doozer]

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If you want to give it a try go here DOWNLOAD

[CitrikElektrik]

Well it's the good old mame not groovymame but I think it's a good news. Maybe Calamity will work on a Groovy Arcade port for the Pi in the future ?

[Doozer]

Well it's the good old mame not groovymame but I think it's a good news. Maybe Calamity will work on a Groovy Arcade port for the Pi in the future ?

The only drawback of the PI is to not provide VGA output. The only way to get 15kHz out of it is to use a R2R network on the GPIO pins. The RGB/S signal is then CPU driven.

[CitrikElektrik]

The only drawback of the PI is to not provide VGA output. The only way to get 15kHz out of it is to use a R2R network on the GPIO pins. The RGB/S signal is then CPU driven.

Not necessary ! A HDMI to VGA converter that has a digital to analog converter is enough. Search for one on amazon and check carefully the comments as some cables do not embark a converter. My pal on Neo-Arcadia runs his RPI in 240p using this adapter. However, this is a fixed resolution but he said it already looks pretty good on his cab.

Just the cable and a resolution adjustment and you're good for the 15khz. Port of GM would only bring the pixel perfect. 

[Doozer]

Not necessary ! A HDMI to VGA converter that has a digital to analog converter is enough. Sct. 

It is a good idea but the HDMI output is limited to the HDMI standard resolutions and does not work with the specific arcade modes. It has been verified in the past. Especially because the cheap HDMI to VGA converters support VGA/SVGA/XVGA resolutions.

[CitrikElektrik]

It is a good idea but the HDMI output is limited to the HDMI standard resolutions and does not work with the specific arcade modes. It has been verified in the past. Especially because the cheap HDMI to VGA converters support VGA/SVGA/XVGA resolutions.

Thank you for this information. I was planning to perform the test so it spares me some time. 

But don't you think it could work with this kind of adapter on the GPIO ?
https://github.com/fenlogic/vga666/blob/master/documents/vga_manual.pdf?raw=true

[Doozer]

But don't you think it could work with this kind of adapter on the GPIO ?
https://github.com/fenlogic/vga666/blob/master/documents/vga_manual.pdf?raw=true

Indeed, this adapter is a solution at the cost of some dedicated CPU power. This should not be an issue starting from PI2 due to the number of cores. I see only a drawback in case this new interface is not exposing a compliant DRI for vertical blank.