Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
04097 Speed Minor Always Oct 24, 2010, 20:01 Jun 11, 2014, 09:19
Tester M.A.S.H. View Status Public Platform MAME (Self-compiled)
Assigned To AWJ Resolution Fixed OS Windows XP (32-bit)
Status [?] Resolved Driver
Version 0.140 Fixed in Version 0.154 Build Normal
Fixed in Git Commit Github Pull Request #
Summary 04097: All sets in namcos1.c: Performance regression
Description Since MAME 0.139u2 i got a performance regression in all Namco System 1 games.
Best example is World Court (wldcourt), after the game start and pressing
fast forward (Insert) i got only 70 % (340 % before) in the Namco NOTICE screen
and then 650 % in the game (760 % before).
Steps To Reproduce
Additional Information
Github Commit
Flags
Regression Version 0.139u2, 0.142u3
Affected Sets / Systems All sets in namcos1.c
Attached Files
png file icon wldcourt.png (10,568 bytes) Oct 24, 2010, 20:01
Relationships
duplicate of 04485ResolvedHaze All sets in wardner.c: Slowdown due to memory mapping changes 
related to 04404ResolvedHaze  tnzs: Significant negative performance spike after intro sequence 
Notes
2
User avatar
No.06800
Tafoid
Administrator
Oct 24, 2010, 21:50
edited on: Jul 15, 2011, 23:10
Regression was first in r9980, when all the memory changes happened. It was black screen/hang until r10032 when a number of drivers were fixed from regression testing with changes in src\emu\memory.c by Aaron:

Fix logic to re-use exact-matching ranges to force a remap.
Fixed almost all regressions reported.


Further regression in 0.142u3 for all games in the driver - most only effected when starting up the game (low % for several seconds). Boxy Boy stays slow throughout.
User avatar
No.07666
hap
Developer
Aug 3, 2011, 20:39
Ok, the games run ok again now.
But I don't think this report should be closed until the underlying cause is fixed: machine/namcos1.c set_bank is very very very slow