05617: midnrun, jetwave, waveshrk, windheat and clones: Display 'blanks out' at even intervals.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
05617	Graphics	Major	Always	Jun 28, 2014, 17:10	Jul 3, 2021, 22:10

Tester	MichaelMichael54321	View Status	Public	Platform
Assigned To		Resolution	Fixed	OS
Status [?]	Resolved			Driver	konami/zr107.cpp
Version	0.153	Fixed in Version	0.234	Build
		Fixed in Git Commit		Github Pull Request #

Summary	05617: midnrun, jetwave, waveshrk, windheat and clones: Display 'blanks out' at even intervals.
Description	Every so often the display completely blanks out (usually every 1.5 seconds or so) before redrawing the screen again. This is a regression from previous behaviour and enough to take notice, despite the IMPERFECT GRAPHICS flag. All this is most noticeable when actually running in a race. I also noticed that the flickering happens less often when changing the network ID from 1... (Although Jet Wave/Wave Shark isn't on the ZR107 hardware, it also expresses the same regression)
Steps To Reproduce	1) Load the game by choosing their respective ROM name 2) After initialization, observe the flickering that happens 3) Go into the test mode and change DIP setting of network ID. All 4 options have flickering, but ID 4 flickers less.
Additional Information	Research showing that it starts happening 02/02/13 - 02/03/13 - initial suspects are r20676, r20687. Winding Heat Midnight Run
Github Commit

Flags
Regression Version	0.148u1
Affected Sets / Systems	midnrun, jetwave, waveshrk, windheat and clones

Attached Files

No.19054 MetalGod Senior Tester Jul 3, 2021, 06:29 edited on: Jul 3, 2021, 08:04	According to mameinfo, this issue has been fixed for mame 0.234. I guess by Ville Linde