07833: ghoshunt, mouseatk, tickee, tutstomb: Random chance of launching with missing colors

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
07833	Color/Palette	Minor	Sometimes	Jan 1, 2021, 01:40	Jan 1, 2021, 21:41

Tester	jkburks	View Status	Public	Platform	MAME (Official Binary)
Assigned To	AJR	Resolution	Fixed	OS	Windows 10 (64-bit)
Status [?]	Resolved			Driver	misc/tickee.cpp
Version	0.227	Fixed in Version	0.228	Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	07833: ghoshunt, mouseatk, tickee, tutstomb: Random chance of launching with missing colors
Description	These 4 games randomly load with incorrect colors. They appear to be missing red.
Steps To Reproduce	Make a clean test install of 0.226 or 0.227. Launch any of these four games. If they load with correct colors, exit and launch them again from the UI or with shift + F3. I have noticed that you must release the shift key to get the correct hard reset. Sometimes they load with missing colors on the first try, sometimes it takes 10 or more times.
Additional Information	Deleting nvram folders seems to have no affect on the % chance of missing colors. I have had them load with missing colors on the first try before the nvram was created and I have had them load correctly a dozen times, then switch to bad colors, then switch back to correct colors on subsequent tries. This can happen from the command line, the UI, or Shift + F3. I was unable to reproduce this issue with 0.225 or earlier. Mallet Madness & Rapid Fire seem not to be affected. Attached example snaps.
Github Commit

Flags
Regression Version	0.226
Affected Sets / Systems	ghoshunt, mouseatk, tickee, tutstomb

Attached Files	tickee_color.jpg (235,495 bytes) Jan 1, 2021, 01:40 Uploaded by jkburks Examples of missing colors

No.18310 Tafoid Administrator Jan 1, 2021, 02:01	I did see this in testing and mentioned it, but it was random/inconsistently happening. More than likely something requiring initialization is missing.
No.18312 AJR Developer Jan 1, 2021, 04:20	672787fe45e9d508b112293fc59ae99b79b3ce9f is a possible fix for this issue.
No.18314 Robbbert Senior Tester Jan 1, 2021, 12:20	tickee was the only one to misbehave for me, being blue and black. After the patch, it's working, but these days one can never be sure if a bug is truly fixed.
No.18317 Tafoid Administrator Jan 1, 2021, 21:40	In my testing they seem corrected. If they happen to regress again during the next dev period, I will re-open