Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06989 Sound Minor Always May 30, 2018, 13:02 May 30, 2018, 14:55
Tester M.A.S.H. View Status Public Platform MAME (Official Binary)
Assigned To cuavas Resolution Fixed OS Windows 10 (64-bit)
Status [?] Resolved Driver champbas.cpp
Version 0.198 Fixed in Version 0.199 Build 64-bit
Summary 06989: champbb2j: AY-3-8910 sound is completely missing
Description The AY-3-8910 sound is completely missing in clone Champion Base Ball Part-2 (Japan).
Only the DAC sound is working!
Steps To Reproduce
Additional Information The parent set Champion Base Ball Part-2 (set 1) uses the address 0x7000 and 0x7001
to write commands to the AY-3-8910 chip, while the clone uses 0x7001 + 0x7002.
See (DASM_champbb2-champbb2j.png) DASM of Champion Base Ball Part-2 (set 1) and clone Champion Base Ball Part-2 (Japan)

- MAME 0.138: Added Champion Base Ball Part-2 (Japan)
- MAME 0.168: The ALPHA-8201 device was added to the driver and Champion Base Ball Part-2 (Japan) that previously locked up at boot is playable.

Discussion on MAME github:
Regression Version  0.138
Affected Sets / Systems champbb2j
Attached Files
png file icon DASM_champbb2-champbb2j.png (11,112 bytes) May 30, 2018, 13:02 Uploaded by M.A.S.H.
There are no relationship linked to this issue.
User avatar
May 30, 2018, 14:32
Try 3f024b8a1d35e8abcf9f54e19ab357de38c66925
User avatar
Senior Tester
May 30, 2018, 14:55
Sound now works!
Compiled with
Many thx!