05600: popeye and clones: Final game resolution output is different at original game

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
05600	Graphics	Trivial	Always	Jun 4, 2014, 19:12	Nov 24, 2019, 23:18

Tester	kamilz	View Status	Public	Platform	MAME (Official Binary)
Assigned To	couriersud	Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	nintendo/popeye.cpp
Version	0.153	Fixed in Version	0.216	Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	05600: popeye and clones: Final game resolution output is different at original game
Description	Game's resolution on Mame 512x448 60Hz Non-Interlaced Original PCB game output 512x448 30Hz Interlaced [15Khz] * * almost confirmed
Steps To Reproduce
Additional Information
Github Commit

Flags	Verified with Original
Regression Version
Affected Sets / Systems	popeye and clones

Attached Files	popeye_01.jpg (191,887 bytes) Jun 4, 2014, 19:12 Uploaded by kamilz PCB Picture, Scanlines visible
	popeye_MainPCB_and_RGB_board.jpg (235,009 bytes) Jun 4, 2014, 19:13 Uploaded by kamilz Game PCB with RGB sub-board
	popeye_zoomedin.jpg (65,615 bytes) Jun 4, 2014, 19:20 Uploaded by kamilz Another pic, zoomed in on popeye and olive

No.10763 haynor666 Tester Jun 4, 2014, 20:12	Maybe it was part of conversion kit.
No.10765 kamilz Tester Jun 4, 2014, 22:35 edited on: Jun 4, 2014, 22:38	Yes, but for an 1982 game, double scan rate is seems unlikely. Also notice RGB board also Nintendo trademark on it, so it is not 3rd party converter unit which may otherwise added later.
No.10766 AWJ Developer Jun 5, 2014, 18:44	It's 448 lines interlaced, same as Spy Hunter. Unfortunately MAME currently doesn't have any way to distinguish between interlaced and progressive resolutions.
No.10769 kamilz Tester Jun 6, 2014, 17:27 edited on: Jun 6, 2014, 17:33	I also think AWJ is right, interlace mode solves 448 lines problem for 15Khz compatibility. But anyway I asked this to that blog's author (that blog pictures here taken from), this is what he says: " >> Hi, Kamilz It's very interesting. At that time, some of Nintendo arcade products had peculiar brightness. Umm,, from my shaky memory, I heard at "2channel" that Popeye's video out put is 512x448 / 15KHz-Interlaced mode. I'm going to investigate it continuously. " I'll update if anything new comes up. PS. I updated report accordingly.
No.17186 couriersud Developer Nov 22, 2019, 23:27	From commit comments: - There are now three rendering modes selectable via machine config: - false progressive: same as before. - Interlaced (scanline skip): only the current field is drawn with the other field's scanlines blacked. This gives the same flickering impression as interlaced display. - Interlaced (bitmap): Bitmap is constructed from odd and even fields. Result is comparable to PAL/NTSC videos played back on progressive displays without additional processing. Whilst not perfect the interlaced display is now documented. Closing this.
No.17188 couriersud Developer Nov 22, 2019, 23:30	Document interlaced display by adding two interlaced modes. See previous comment.
No.17207 ICEknight Tester Nov 24, 2019, 23:18 edited on: Nov 24, 2019, 23:22	That's a great addition but, rather than being selectable via machine config in this particular case, shouldn't it be a global option since there's many systems which use it? Also, perhaps "false progressive" shouldn't be MAME's default, since that's not how interlaced games looked.