Difference between revisions of "Earthworm Jim/Bugs"
From Sega Retro
m (Sprite zooming hardware issues) |
|||
| Line 16: | Line 16: | ||
*{{LinkYoutube|video=8ORqaMouVWY|title=YouTube video showing the bug in action}} | *{{LinkYoutube|video=8ORqaMouVWY|title=YouTube video showing the bug in action}} | ||
| + | }} | ||
| + | |||
| + | ==Master System version== | ||
| + | ===Sprite zooming hardware issues=== | ||
| + | {{Bug | ||
| + | | image=EarthwormJim SMS BR bugs scaling1.jpeg | ||
| + | | caption=[[Master System II]] | ||
| + | | image2=EarthwormJim SMS BR bugs scaling2.jpeg | ||
| + | | caption2=[[Master System]] | ||
| + | | image3=EarthwormJim SMS BR bugs scaling3.jpeg | ||
| + | | caption3=[[Power Base Converter]] | ||
| + | | desc=The [[Master System]] version of ''Earthworm Jim'' was programmed with the revised [[Master System II]] in mind; in particular, the game utilizes the revision's sprite zooming functionality (doubling the pixel size of artwork) to display its HUD.{{ref|https://web.archive.org/web/20230903090024/https://nicole.express/2021/i-am-the-mark-iii.html}} | ||
| + | |||
| + | Earlier revisions of the Master System support a bugged implementation of sprite zooming, resulting in only the first four (out of eight) sprites on a given scanline being zoomed properly. The remaining four will be zoomed horizontally, but not vertically. The [[Mega Drive]]'s backwards compatibility mode (when played through the [[Power Base Converter]]) lacks sprite zooming altogether, and only displays portions of the HUD at half the intended size.{{ref|https://web.archive.org/web/20230903090024/https://nicole.express/2021/i-am-the-mark-iii.html}} | ||
}} | }} | ||
Latest revision as of 04:02, 3 September 2023
- Back to: Earthworm Jim.
Contents
Mega Drive version
Sound driver hardware issues
The GEMS sound driver used by Earthworm Jim functions improperly on Mega Drive hardware that has a discrete YM2612, most notably on Model 1 units. On these systems, the music and sound effects have noticeable stutter. This bug doesn't occur when played on newer revisions of the hardware.
Not fixed in any version.
Floating after death in Buttville
In Buttville, reach Queen Slug-for-a-Butt and bring Jim's health down to a low-enough percentage (at least 40% on the Normal difficulty), have Jim lose all his remaining health by touching the spikes surrounding the Queen, then kill her by whipping her before Jim's health drops to 0% so that Jim dies during the Queen's death cutscene. When the level restarts, Jim will be in an odd state where he'll move through the floor and be unable to fall downwards, though he can still interact with platforms.
If the last checkpoint reached was the one after the Queen's tail, it is still possible for the player to reach the Queen and kill her to finish the game while in the glitched state. Jim can be moved to the left, while carefully using the Snot platforms to put him in a position where he is able to whip the Queen.
Not fixed in any version.
Master System version
Sprite zooming hardware issues
The Master System version of Earthworm Jim was programmed with the revised Master System II in mind; in particular, the game utilizes the revision's sprite zooming functionality (doubling the pixel size of artwork) to display its HUD.[1]
Earlier revisions of the Master System support a bugged implementation of sprite zooming, resulting in only the first four (out of eight) sprites on a given scanline being zoomed properly. The remaining four will be zoomed horizontally, but not vertically. The Mega Drive's backwards compatibility mode (when played through the Power Base Converter) lacks sprite zooming altogether, and only displays portions of the HUD at half the intended size.[1]
Not fixed in any version.
References
- ↑ 1.0 1.1 https://nicole.express/2021/i-am-the-mark-iii.html (Wayback Machine: 2023-09-03 09:00)
| Earthworm Jim | |
|---|---|
|
Main page | Comparisons | Maps | Hidden content | Bugs | Development | Magazine articles | Video coverage | Reception | Promotional material | Region coding | Technical information | Bootlegs  | |
