Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
07720 Sound Minor Always Aug 3, 2020, 21:22 Aug 9, 2020, 23:08
Tester Justin Kerk View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows Vista/7/8 (64-bit)
Status [?] Acknowledged Driver odyssey2.cpp
Version 0.222 Fixed in Version Build 64-bit
Summary MESS-specific 07720: odyssey2 [bees]: Killer Bees speech sounds are too slow
Description After finishing a round in Killer Bees with The Voice module attached, the voice plays a series of sounds, "MORE MORE MORE CHK CHK CHK", as it counts up your score from your remaining bees. On real hardware it says "MORE" more times than in MAME and the CHK sound is more rapid.

Compare at 4:28 in this hardware recording on YouTube:
Steps To Reproduce 1. mame odyssey2 -cart voice -cart2 bees
2. Press Ctrl to start play
3. Move your swarm of white bees around to sting all the running enemies, avoiding the orange bees
Additional Information Spin-off of https://mametesters.org/view.php?id=5103

kevtris had the same issue on his FPGA emulation and fixed it by fixing the SP0256:

<kevtris> there I fixed my SP0256
<kevtris> that fixed killer bees.  it says "more" 4x now and the tick tick tick noise sounds right, and there's a bunch more of them
<kevtris> turns out that it does have a 1 deep FIFO
<kevtris> it takes a small amount of time for LRQ to go low after writing to it
<kevtris> it will stay high on the SECOND write to it, until the first sample is done
Flags Verified with Original
Regression Version
Affected Sets / Systems odyssey2 [bees]
Attached Files
 
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Notes
2
User avatar
No.17865
mahlemiut
Developer
Aug 3, 2020, 21:59
I remember mentioning a similar issue to this relating to some Amstrad CPC games that support the Amstrad SSA-1 speech synth (which is also SP0256 based), which use the fact that SBY and LRQ don't trigger at the same time as a method of auto-detecting the SSA-1.
User avatar
No.17866
Justin Kerk
Developer
Aug 3, 2020, 22:18
Yes and you linked to http://www.cpcwiki.eu/index.php/SP0256_Measured_Timings