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Viewing Issue Advanced Details
ID | Category [?] | Severity [?] | Reproducibility | Date Submitted | Last Update |
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01085 | Color/Palette | Minor | Have not tried | Feb 9, 2008, 12:52 | Feb 11, 2010, 08:37 |
Tester | Fujix | View Status | Public | Platform | |
Assigned To | Resolution | Duplicate | OS | ||
Status [?] | Closed | Driver | |||
Version | 0.108u1 | Fixed in Version | Build | ||
Fixed in Git Commit | Github Pull Request # | ||||
Summary | 01085: NES-based games.: Wrong colors. | ||||
Description |
Wrong colors. Zaphod Updated: The duck hunt nes cpu is the same one as the playchoice 10 one, amd both of these can be used to RGB-mod a real NES. So all VS games that use the same palette as pc-10 driver (duck Hunt and some others) can be pronounced accurate. Games that use alternate plaettes need testing with real boards, and probably analysation of the signals to check that misconfigured monitor settings aren't to blame for the discrepancies. |
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Steps To Reproduce | |||||
Additional Information | |||||
Github Commit | |||||
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Regression Version | |||||
Affected Sets / Systems | NES-based games. | ||||
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Notes
8
No.01011
Fujix Administrator
May 20, 2008, 09:20
edited on: May 20, 2008, 09:36 |
Added a screenshot of VS Scoccer from an auction. |
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No.01013
Tafoid Administrator
May 20, 2008, 11:27
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Attached a shot from 0.125u1 to compare of that game. Seems very close.. |
No.01014
Fujix Administrator
May 20, 2008, 18:54
edited on: May 22, 2008, 18:20 |
Added other shots. According to a technical site, the VSNES system outputs inverted RGB signals for negative signal monitors, and we have to use a polarity reversal circuit to get correct color display on a normal CRT. The only exception is VS. Tennis. It outputs normal signals. I guess the handling of the special signals may not be perfect in MAME. |
No.01016
etabeta Developer
May 20, 2008, 21:06
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well, red seems off in both, but in different ways... |
No.01113
NekoEd Senior Tester
May 28, 2008, 13:28
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Heh, IIRC, palleting has always been a big issue with NES emulation... nobody ever seems to get it quite right and nobody ever seems to be happy with anything they come up with... though in this case it's definitely pretty far off, especially the VS Super Mario Bros one. |
No.01385
Kold666 Developer
Jun 25, 2008, 21:45
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Fujix, the inverted signals are not special. They are only inverted for use with the crappy sanyo monitors mounted on nintendo cabinets. The colours are just inverted so that for example 0 is maximum intensity. It's only a different standard but the principle is the same of the positive RGB. with a simple circuit you can reverse again the negative rgb colours On Mario pcb you don't need to invert the signals because there is a jumper on the board to use the inverted colours stored on the PROM |
No.01386
Kold666 Developer
Jun 25, 2008, 21:46
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All nintendo pcbs have inverted colours, even the early ones. |
No.05703
Fujix Administrator
Feb 11, 2010, 08:35
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This report has been merged with 00803. |