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Merge pull request #835 from TomHarte/ErrantScan

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Allows for permitted 1/32nd timing error in `time_multiplier_`.
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Thomas Harte 2020-09-17 18:17:37 -04:00 committed by GitHub
commit 7bb74af478
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1 changed files with 1 additions and 1 deletions
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Outputs/CRT/CRT.cpp
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@ -27,7 +27,7 @@ void CRT::set_new_timing(int cycles_per_line, int height_of_display, Outputs::Di
// 7 microseconds for horizontal retrace and 500 to 750 microseconds for vertical retrace
// in NTSC and PAL TV."
time_multiplier_ = 65535 / cycles_per_line;
time_multiplier_ = 63487 / cycles_per_line; // 63475 = 65535 * 31/32, i.e. the same 1/32 error as below is permitted.
phase_denominator_ = int64_t(cycles_per_line) * int64_t(colour_cycle_denominator) * int64_t(time_multiplier_);
phase_numerator_ = 0;
colour_cycle_numerator_ = int64_t(colour_cycle_numerator);