Is there a list of games that don't work

[Shieldwolf]

Can anyone play NFL blitz or Crusing USA

I have a 2600 GHZ 3d card and 512 megs of ram and they are too slow to play. What other games are in mame but really can't be played?

[DaveJ-UK]

Cruisn World runs ~ 3-12/57fps in game, 57/57 at menus on my Prescott 3.0 with 2 x 512MB DDR3700.

The bottle neck is the CPU; it only uses about 80MB memory. Mame does not use any hardware acceleration so you may as well be using a cheap 2D card.

I'd be interested to know what 2600 GHz 3D card you have

[Shieldwolf]

this what happens when I post using my phone.

2600ghz processor

radeon 7500 3d card

that should solve confusion.

[MrBond]

Exactly why can't MAME make use of hardware acceleration?  I've wanted to know, and this post just brought it to mind.

[Minwah]

Exactly why can't MAME make use of hardware acceleration?  I've wanted to know, and this post just brought it to mind.

As a rule it is difficult or impossible to use hardware acceleration and retain maximum accuracy.  Software can maintain accuracy, which is MAME's main objective...

[Shieldwolf]

I want to play mr. driller darn it

[Howard_Casto]

Then go to the arcade and bring many quarters.  Mame's purpose isn't so you can get your "warez" fix ya know.  

I hate to just label it that way, but when you are complaining about a series that came out in 1999, what do you expect?

[Shieldwolf]

I'm sorry I actually own Mr driller on my Dreamcast, but I want to play the arcade version and if you can point me to an Arcade in socal that actually has mr driller I will be happy to go there and play.

[Tiger-Heli]

Can anyone play NFL blitz or Crusing USA

I have a 2600 GHZ 3d card and 512 megs of ram and they are too slow to play. What other games are in mame but really can't be played?

Most of the newer and .chd games require a lot of horsepower.

What you might try doing is underclocking the processors on the tilde menu.  I can get near 100% framerate on crusin USA with a Pentium 1.8 Ghz PC with both CPU's underclocked to 10% (although I'm not sure what effect this has on playability).

See http://www.arcadecontrols.org/yabbse/index.php?board=3;action=display;threadid=18170 for details on ways to set MAME up to automatically use a set underclock when games are started.

As far as why the games are so slow - Consider the following - PacMan ran on a 3.07 Mhz CPU (slightly slower than the original IBM PC).  MAME could not play it on a 286 or 386, somewhere between a 486-100 and a Pentium 200, it became playable.  Cruisin is using a 50 Mhz CPU and some of the newer games are basically using roughly a Pentium 200 class CPU in the game itself.

The math isn't this simple, but just on clock speed, crusin is running 16.66 times faster than PacMan so it should require a 200x16.66 = 3.3 Ghz machine to run.  (This does not take into account processor advances beyond clock speed).

As far as why MAME doesn't use hardware acceleration - it's all about accuracy.  In most cases the original games did not use sophisticated polygon drawing routines and 3d optimizations, so for MAME to use them, it would be SIMULATING the game, instead of EMULATING it.

It would be neat to see an emulator which took advantage of modern 3D cards, but it will be less authentic, it will be difficult to come up with, and it will probably be independent of MAME.