03756: gradius2, gradius2a, gradius2b, vulcan, vulcana, vulcanb: Graphics glitch on demo screen as the Heros screen is display

- As of 0.139u2, some drivers and options show "16-bit EEPROM set with 8-bit data". Check 4030.
- Haze is calling for mixing issues with *SINGLE* VDP games in toaplan2.c. Check 4044.

Viewing Issue Advanced Details [ Jump to Notes ]

[ View Source: twin16.c ]

Category [?]

Severity [?]

Reproducibility

Date Submitted

Last Update

03756

Graphics

Minor

Always

2010-02-28 05:22

2010-09-02 19:22

Tester

gamestone

View Status

Public

Assigned To

Platform

MAME (Official Binary)

Priority

normal

Resolution

Bugs That Aren't Bugs

Windows XP (32-bit)

Status [?]

Resolved

Driver

twin16.c

Projection

None

Version

0.136

ETA

None

Fixed in Version

Build

Normal

Summary

03756: gradius2, gradius2a, gradius2b, vulcan, vulcana, vulcanb: Graphics glitch on demo screen as the Heros screen is display

Description

Title screen loops through three different stages, stage 1, stage 3 and stage 6, with the heros screens and history intro in between each stage.

Stage 6 Maximum Speed - when Vic Viper crashes into the Big Core MkII laser the stars turn into squares as the Ranking Screen is displayed, this does not happen on my Japanese Gradius II GOFER no Yabou arcade PCB.

Steps To Reproduce

Watch the title loop demo until stage 6 is shown (third stage shown in the demo) .

Additional Information

Flags

Verified with Original

Regression Version

Affected Sets

gradius2, gradius2a, gradius2b, vulcan, vulcana, vulcanb

Old BugID

Attached Files

shot.png (21,861 bytes) 2010-02-28 05:22

gradius_ii_gofer_no_yabou.avi (10,394,340 bytes) 2010-02-28 20:58

Relationships

Notes
(05796) Haze (Senior Tester) 2010-02-28 14:11	sure this isn't just a gamma issue, ie, if you turn the brightness etc. right up on your original arcade monitor you might be able to see them too? it's not so common with Konami games, but with Capcom ones this kind of 'issue' is present in the majority of their titles simply because the developers assumed that a colour which was close to black would be seen as black on an original monitor.

(05797) gamestone (Tester) 2010-02-28 16:05	You are correct, after turning the brightness and contrast up all the way the squares are present. I've recorded a very short video show the arcade version has this glitch also. http://www.gamestone.co.uk/mame/gradius_ii_gofer_no_yabou.avi I guess as my PC monitor is much better than the old arcade monitor which makes it look much worse in MAME.

(05798) Haze (Senior Tester) 2010-02-28 18:28 edited on: 2010-02-28 18:29	thanks, this should be attached to the report for future reference :-) and yes, colour reproduction is much better on modern PC monitors which is why artifacts like this are more obvious under emulation.

(06672) robiza (Developer) 2010-09-02 18:29	BTANB