some mame games are slow. Reason?

[equlizer]

for example i play wardner on my cab and at the 2nd level it goes to about 50% speed.  This is an older game.  But i can play MK3 and 4 with no slowdowns at all.

So i tried it on my main machine and everything was fine.  My cab is win xp 32bit and my main rig is Win7 64bit. Both machines have 6gig of ram.

[Gray_Area]

google: easyemu

[equlizer]

great link!  but doesnt really answer my question

[Haze]

great link!  but doesnt really answer my question

Might be related to the recent rather stupid changes which have killed performance on things using banking, even relatively light banking.

Level 2 is over 10x slower than the first level here too (just manages to keep over 100% tho)  The 3rd level showing in the attract mode is even slower, and does't.

Use an older version, there is some f*****g awful code going into the MAME core as of late which is causing severe performance issues across the board, even on what SHOULD be simple cases.

(this is just as frustrating for me as a developer because it means I'm having to hack around core functionality, or, in some cases am seeing unavoidable and absolutely awful performance in drivers I'm working on which aren't doing anything especially out of the ordinary)

Aaron might not be in charge anymore, but his legacy of some incredibly *bad* code still lives on.

[Tafoid]

For the record - the bug is acknowledged now.
http://mametesters.org/view.php?id=4485

[equlizer]

Thx for the heads up!

[nsm7arc]

Good Step
Well done