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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08542 Timing Minor Always 28 days ago 20 days ago
Tester StHiryu View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows Vista/7/8 (64-bit)
Status [?] Acknowledged Driver
Version 0.251 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 08542: spec128, specpl3e: Some spectrum models are running at wrong speed
Description Some spectrum models (Zx Spectrum 128 and Zx Spectrum +3) are running a little bit faster (50.021154 Hz) than they should, according to this link:

https://worldofspectrum.org/faq/reference/128kreference.htm

"Note that this means that there are 70908 T states per frame, and the '50 Hz' interrupt occurs at 50.01 Hz, as compared with 50.08 Hz on the 48K machine."
Steps To Reproduce Launch one of those spectrum models:
-spec128
-specpl3e
Additional Information
Github Commit
Flags
Regression Version 0.244
Affected Sets / Systems spec128, specpl3e
Attached Files
 
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