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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
09561 Sound Minor Always 22 hours ago 57 minutes ago
Tester 125scratch View Status Public Platform MAME (Official Binary)
Assigned To Resolution Fixed OS Windows (x64)
Status [?] Resolved Driver
Version 0.289 Fixed in Version 0.290GIT Build x64
Fixed in Git Commit cec5236 Github Pull Request #
Summary 09561: spcforce: Sound is too high-pitched, sound CPU clock possibly incorrect
Description PCB footage:


I heard from jadsi that the SN76496s should be clocked at 768 kHz and the 8035 should be clocked at 3.072 MHz, but I'm not sure how accurate that is.
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Affected Sets / Systems spcforce
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3
User avatar
No.24733
hap
Developer
20 hours ago
edited on: 19 hours ago
I don't know who that is, but ok, credit for fix goes to jadsi.
User avatar
No.24736
125scratch
Tester
1 hour ago
Just someone I know on Discord. The pitch is definitely more accurate after the fix, but it seems like the fire sound is still hanging or sustaining sometimes. jadsi had this to say: "I know the 8035 controls how fast the non-60 hz sounds play, and it seemed to be twice as fast as the speed it was meant to be"
User avatar
No.24737
125scratch
Tester
57 minutes ago
He also said he doubts the 8085A is clocked quite as high as 16MHz, so take that how you will.