Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
03693 Speed Minor Always Jan 28, 2010, 06:35 Jul 4, 2020, 07:16
Tester pooyan View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS
Status [?] Confirmed Driver psikyo.cpp
Version 0.136u1 Fixed in Version Build
Summary 03693: s1945nj, s1945n: [possible] Slowdown in certain scenarios
Description Please look at 0000.jpg.When these tanks appear,the game runs like slow-motion...

The Arcade doesn't have this problem.
Steps To Reproduce
Additional Information
Flags Possible
Regression Version
Affected Sets / Systems s1945nj, s1945n
Attached Files
jpg file icon 0000.jpg (33,480 bytes) Jan 28, 2010, 06:35
zip file icon state.zip (514,995 bytes) Jan 28, 2010, 07:53
Relationships
There are no relationship linked to this issue.
Notes
7
User avatar
No.05580
pooyan
Tester
Jan 28, 2010, 07:51
OK,here is a state.
User avatar
No.05581
Fujix
Administrator
Jan 28, 2010, 07:58
edited on: Jan 28, 2010, 07:58
OK, I confirmed the slow down occurs there, just only in the s1945jn sets. Other protected and bootleg sets are not affected.

It is not MAME's but in-game slowdown like many cave games.
As you mentioned in your report, since you confirmed it against the arcade version, could we have something to prove that it is same as the s1945jn set?

Thanks.
User avatar
No.05582
pooyan
Tester
Jan 28, 2010, 08:20
Oh,yes, just only in the s1945jn sets..

The arcade version that I played is "s1945j".

Sorry for my mistake.
User avatar
No.05583
etabeta
Developer
Jan 28, 2010, 10:39
shall we mark this as possible until confirmation with a real machine for s1945jn?
User avatar
No.05584
Haze
Senior Tester
Jan 28, 2010, 11:16
edited on: Jan 28, 2010, 11:17
I found that with the bootleg, which is based off this set, I had to invert the vblank flag compared to the main sets. On the bootleg the problem was more severe, all the sprites would go invisible when it slowed down.

I'm not really sure what to make of it tho, the vblank is clearly right for other games, but this set is on different hardware, but I didn't want to make changes outside the scope of the bootleg I was emulating.
User avatar
No.17809
MetalGod
Senior Tester
Jul 4, 2020, 07:11
edited on: Jul 4, 2020, 07:29
Updated rom name (s1945nj). It also happens in s1945n

The bug is in (5:40)

User avatar
No.17810
MetalGod
Senior Tester
Jul 4, 2020, 07:16
edited on: Jul 4, 2020, 07:29
It seems this game changes levels order.