| ID | Category [?] | Severity [?] | Reproducibility | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 08707 | Sound | Minor | Always | Jul 7, 2023, 17:25 | Jul 7, 2023, 17:39 |
| Tester | hap | View Status | Public | Platform | MAME (Official Binary) |
| Assigned To | hap | Resolution | Fixed | OS | Windows 10/11 (64-bit) |
| Status [?] | Resolved | Driver | |||
| Version | 0.256 | Fixed in Version | 0.257 | Build | 64-bit |
| Fixed in Git Commit | 7d544e7 | Github Pull Request # | |||
| Summary | 08707: msx systems: Konami SCC sample reload is wrong | ||||
| Description |
Konami SCC sample reload is wrong in MAME. I did some hardware tests on my old MSX1, see attachment for .rom files and source code. test1: tests if freq write will reload sample. answer = yes result on MAME: continuous tone result on MSX: beep,beep,beep,beep,... test2: tests if freq<9 sets sample to 0 answer = no result on MAME: squarewave result on MSX: 1 pop and then silence test3: tests if volume is latched same time as sample answer = yes result on MAME: squarewave result on MSX: siren test4: same as test3, except high freq result on both MAME and MSX: silent test5: like test3, but for keyon instead of volume answer = yes result on MAME: squarewave result on MSX: siren (sounds same as test3) |
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| Steps To Reproduce | |||||
| Additional Information | |||||
| Github Commit | |||||
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| Affected Sets / Systems | msx systems | ||||
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Attached Files
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 sccfreqw.zip (6,833 bytes) Jul 7, 2023, 17:25 Uploaded by hap | ||||