Bugs in games

[drhelius]

• Ankoku Densetsu (Legendary Axe II): hangs. [BROKEN]
• Aoi Blink: no input, bad sound, off by one scroll line. [BROKEN]
• Appare Gateball: no sound. [PLAYABLE]
• Blazing Lazers: graphics corruption second part first level. [BROKEN]
• Bodycon Quest II: BG one frame should be disable in intro (burst mode?). [PLAYABLE]
• Cratermaze: BG not aligned with sprites in intro (bad scroll X). [PLAYABLE]
• Cyber Knigth: Corrupted graphics. [BROKEN]
• Davis Cup Tennis: Corrupted graphics. [BROKEN]
• Doraemon Meikyuu Daisakusen: BG not aligned with sprites in intro (same as Cratermaze). [PLAYABLE]
• Dungeon Explorer: Broken sprites and collisions. [BROKEN]
• Fighting Run: bad sprites (2bpp?). [BROKEN]
• Gaia no Monshou: BG graphics corruption. [BROKEN]
• Gomola Speed: BG corrupted left 8 pixels. [PLAYABLE]
• Kikikai-kai: broken. [BROKEN]
• Kore ga Pro Yakyuu '89: no image. [BROKEN]
• Kore ga Pro Yakyuu '90: no image. [BROKEN]
• Lady Sword: No sprites. [BROKEN]
• Momotarou Densetsu Gaiden - Dai-1-shuu: Bad BG line during title screen. [PLAYABLE]
• Necromancer: No sprites. [BROKEN]
• Pachio-kun - Juuban Shoubu: Screen shakes during intro. [PLAYABLE]
• Populous: Graphics corruption. [BROKEN]
• Power Gate: Incorrect scroll X lines. [PLAYABLE]
• Power League: Sprite corruption. [BROKEN]
• R-Type: Flickering in first BG scroll. [PLAYABLE]
• Rabio Lepus Special: no BG, no enemies. [BROKEN]
• Takeda Shingen: BG corruption. [BROKEN]
• TaleSpin: BG corruption. [BROKEN]
• TV Sports Basketball: hangs. [BROKEN]
• TV Sports Hockey: hangs, sprite corruption. [BROKEN]
• Valkyrie no Densetsu: hangs during intro. [BROKEN]
• Volfied: No sprites. [BROKEN]
• World Circuit: bad logic. [BROKEN]
• World Class Baseball: Sprite corruption. [BROKEN]
• Xevious: minor sprite corruption during intro. [PLAYABLE]

[jbrandwood]

You may find some of the these test examples useful for figuring out some of the VDC's timing intricacies that can cause glithches in games ... https://github.com/pce-devel/huc/tree/master/examples/asm/elmer

[drhelius]

You may find some of the these test examples useful for figuring out some of the VDC's timing intricacies that can cause glithches in games

It definitely helps. Thank you!