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速度解決済み修正済み2015-07-05 07:012015-07-30 02:42
 
テスターsystem11担当者system11ソースrainbow.cpp
バージョン0.163発生バージョン修正バージョン0.164
フラグ実機・資料検証済み
セット jumping, jumpinga
セット詳細
jumping - Jumping (set 1)
jumpinga - Jumping (set 2)
 
概 要クロック分周の間違いにより音程が少し異なる。
詳 細Kazblox asked me to check the clocks on my Jumping PCB since the sound is slightly wrong. After doing so I found:

1) The crystals are wrong (or very likely multiple bootleg variants exist) - the 18.432mhz can also be a 16mhz, which makes little to no difference in-game
2) Above makes no difference because that's the CPU crystal, speeds should be as follows (assume for 16mhz fitted):

68k - 16/2
Z80 - 24/4
YM2203 - 24/8
(for reference) Y3014B - 1Mhz (driven by 2203s)

Using the above clocks and dividers in a test build, MAME sounds correct. Not sure who is going to submit the actual fix. Side note will be dumping the variant I have since while very similar looking, the ROM layout is different - title screen matches jumpinga version.
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