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How differently do Jamma boards run than MAME Emulations?

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yotsuya:


--- Quote from: jadder on June 09, 2014, 09:28:19 pm ---
--- Quote from: southpaw13 ---Mame is a great reference to try games,but the PCB's are more accurate.  They are 1/60 of a second faster.  No lag!

--- End quote ---
agree here.  if you are someone like steve wiebe playing donkey kong on a 'pro' level, i dont think he would settle for mame especially now he is obviously so used to the pcb.  there's also a guy who's a pro galaxian player and he says he cant play it in mame as it doesnt quite feel the same (i imagine if mame isnt 100% accurate to the pcb, someone like him is going to notice.. unlike us more casual players)


--- Quote from: yotsuya ---Yes, the ACTUAL PCBs will probably run better than MAME Emulations. They may not be more reliable, but they are as the game designers intended.

--- End quote ---
i dont quite agree on the end of the statement. i dont think the guys who designed metal slug or double dragon were very happy when they noticed the hardware couldnt always handle what they were throwing at it, and the games suffered from very noticeable slowdowns. so that's one plus of mame; you can use overclocking and play a large number of games without the unintended slowdown you found on the original pcb's.

--- End quote ---

I just threw that last part of the statement on there to finish a sentence.

jimmer:


--- Quote from: southpaw13 on June 09, 2014, 08:32:16 pm ---They are 1/60 of a second faster. 

--- End quote ---
This is not a general rule. It's a myth which has now been dispelled.
Check out Calamity's work in the groovymame folder if you need proof.

jimmer:


--- Quote from: jadder on June 09, 2014, 09:28:19 pm ---  there's also a guy who's a pro galaxian player and he says he cant play it in mame as it doesnt quite feel the same (i imagine if mame isnt 100% accurate to the pcb, someone like him is going to notice.. unlike us more casual players)

--- End quote ---

I'd be interested to know how much effort the guy put into getting it right on a MAME set up. Galaxian doesn't look like it should be hard to emulate.  That said I'm currently trying to get Galaxian how I like it on my various lcd set-ups, it's proving hard mostly due to the resolution having been tripled by the mame team at some point (anyone got a link to info about that?).

I want it pixel perfect so I've got the choice of 768pixels high which is a bit small on eg 1080 screen  or 1536high on a 1200x1600 (20") which is a bit big.

Groovymame solves these problem for CRT I think.

If you don't have it pixel perfect, say you use MAME default and stretch it vertically to fill a 1080 screen, then you get extra rows and columns of pixels which might be detectable as irregularities in the otherwise smooth trajectories of the chargers.

The above is even before sync problems offer yet more scope for deviations from perfect.



southpaw13:

Groovy Mame is the only one I use, wish it was updated to 153.

jimmer:


--- Quote from: southpaw13 on June 10, 2014, 11:41:14 am ---Groovy Mame is the only one I use, wish it was updated to 153.

--- End quote ---

You should probably get over to the groovymame subforum.

I don't even use it but I've got groovymame0153.

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