Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
05782 Graphics Minor Always Nov 12, 2014, 23:14 Jul 28, 2019, 15:20
Tester zaxxon View Status Public Platform MAMEUI
Assigned To Resolution Open OS Windows Vista/7 (32-bit)
Status [?] Confirmed Driver system1.cpp
Version 0.155 Fixed in Version Build Normal
Fixed in Git Commit Github Pull Request #
Summary 05782: choplift: misaligned graphics on levels 3 & 4
Description note: the two clone sets 'chopliftbl' and 'chopliftu' do not have this problem:-

for the parent set: choplifter (8751 315-5151):

on level 3, when you are flying the helicopter and scrolling the screen, the large yellow trees graphics become misaligned (see the snapshot picture below). the alignment is ok when the screen is not scrolling. a save state (for mame 0.155) is provided.

here is a video (mame 0.155) showing the level 3 issue:

EDIT: i just noticed the graphics are also misaligned in a similar way on the final level, level 4. (level 4 save state now added below).
i dont know if it is related to the problem, but levels 1 and 2 contain the fancy parallax scrolling ground, but levels 3 and 4 do not.
Steps To Reproduce
Additional Information
Github Commit
Regression Version
Affected Sets / Systems choplift
Attached Files
png file icon choplift.png (27,090 bytes) Nov 12, 2014, 23:14 Uploaded by zaxxon
zip file icon choplift level (6,152 bytes) Nov 13, 2014, 00:31 Uploaded by zaxxon
choplift - save state level 3 (mame 0.155)
zip file icon choplift level (6,804 bytes) Nov 13, 2014, 00:31 Uploaded by zaxxon
choplift - save state level 4 (mame 0.155)
There are no relationship linked to this issue.
User avatar
Nov 13, 2014, 07:31
zaxxon, thank you for the save states. In the future, please take snap shots with the F12 key only as stated in the Rules and Guidelines.

I'll confirm this as I'm seeing the same behavior here.
User avatar
Nov 13, 2014, 10:28
ah ok sorry about that, i will remember for next time
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Senior Tester
Nov 14, 2014, 16:20
edited on: Nov 14, 2014, 16:20
there are reports on MARP that the parent set crashes sometimes too, could be the MCU rom that was hand-repaired (afiak) is still bad.
User avatar
Nov 14, 2014, 22:01
there's some chat about the crash from others (plus a screenshot of the crash) here:
User avatar
Jul 28, 2019, 13:56
edited on: Jul 28, 2019, 13:57
According to Osso, the correct dump of the MCU does not fix the misalignment bug.
Has anyone checked if it happens on real hardware?
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Senior Tester
Jul 28, 2019, 15:20
edited on: Jul 29, 2019, 18:44
I've seen videos on the internet which do not present the issue, but they could be the clones not affected by this bug.