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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06868 Graphics Minor Always Feb 6, 2018, 05:55 13 days ago
Tester -Misc Reporters- View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows 10 (64-bit)
Status [?] Acknowledged Driver dkong.cpp
Version 0.194 Fixed in Version Build 64-bit
Summary 06868: dkong: Video rendering is not cycle accurate or accounting for all bus factors.
Description Simply put, the video output for this game, which also effects many different machines' emulated output, alters the way the game is presented on screen at a frame by frame level. A specific and easily visible issue is that the latest version of MAME emulates this scan from right to left instead of from left to right like an actual arcade Donkey Kong does, so the timing information is opposite.

Further details are available as tests were done from MAME recordings, Arcade PCB output sources.
http://donkeykongforum.com/index.php?topic=2055.msg33395#msg33395
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Affected Sets / Systems dkong
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No.14933
smf
Developer
13 days ago
0.196 swaps the orientation to match the default setting for original boards (it's possible to modify an original board to match the previous MAME behaviour http://www.brasington.org/arcade/tech/flip/dk.shtml)

Bus contention is still not emulated, so the screen transitions are still wrong.