Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06892 Graphics Minor Always Feb 27, 2018, 09:10 Apr 16, 2023, 15:07
Tester ICEknight View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS
Status [?] Acknowledged Driver
Version 0.194 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary MESS-specific 06892: pico and clones: Colored borders are cropped
Description MAME isn't rendering the full output of the Sega Pico and crops the borders that can be seen on real hardware.
Steps To Reproduce A year at Pooh's Corner (poohcorn) will show a colored border right at the intro screen:
Additional Information MAME already renders the full display output for systems such as the PC Engine or ZX Spectrum, so it would be consistent to not crop them for the Pico and other related systems (Mega Drive, etc).
Github Commit
Flags Verified with Original
Regression Version
Affected Sets / Systems pico and clones
Attached Files
related to 08425Acknowledged  smspal, sms1pal: Wrong aspect ratio 
User avatar
Senior Tester
Feb 28, 2018, 19:00
I guess it should be an option at least, the problem is most people consider the borders being present to be a bug, so we probably need to cater for both.
User avatar
Mar 11, 2018, 20:26
edited on: Apr 16, 2023, 20:42
It's been pointed out at MAMEWorld that VS Excitebike is missing a colored border at the bottom, so this may also extend to NES-based hardware as well:

See also:
User avatar
Mar 28, 2018, 02:09
Mega Drive should at least have the border as a display option (e.g. via the artwork system) similar to the 304-wide Neo-Geo games, if it's there on the real thing e.g. when messing with the horizontal hold on a CRT TV it should at least be possible to show it in MAME. Same goes for NTSC NES games where the top 16 pixels aren't normally seen.

The (unrelated) Excitebike border problem (the border around the Nintendo logo on the wall, not the screen itself) is most likely just a video timing bug, Super Mario 3 had similar problems with the HUD on older emulators which used exactly 60Hz instead of 59.94 or thereabouts.