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Judging by Pompey Pirates Menu 88, vsync should occur a line earlier, ending during line 0.

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This commit is contained in:
Thomas Harte 2020-01-02 20:16:28 -05:00
parent 2f8078db22
commit 42ccf48966
1 changed files with 7 additions and 6 deletions
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13
Machines/Atari/ST/Video.cpp
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@ -267,10 +267,11 @@ void Video::advance(HalfCycles duration) {
next_vertical_.enable = true;
} else if(y_ == vertical_timings.reset_enable) {
next_vertical_.enable = false;
} else if(next_y_ == vertical_timings.height) {
} else if(next_y_ == vertical_timings.height - 2) {
next_vertical_.sync_schedule = VerticalState::SyncSchedule::Begin;
} else if(next_y_ == vertical_timings.height) {
next_y_ = 0;
} else if(next_y_ == 2) {
} else if(y_ == 0) {
next_vertical_.sync_schedule = VerticalState::SyncSchedule::End;
}
}
@ -464,10 +465,10 @@ void Video::write(int address, uint16_t value) {
// Sync mode and pixel mode.
case 0x05:
// Writes to sync mode have a one-cycle delay in effect.
deferrer_.defer(HalfCycles(2), [=] {
// deferrer_.defer(HalfCycles(2), [=] {
sync_mode_ = value;
update_output_mode();
});
// });
break;
case 0x30:
video_mode_ = value;
@ -512,8 +513,8 @@ void Video::update_output_mode() {
video_stream_.set_bpp(output_bpp_);
}
// const int freqs[] = {50, 60, 72};
// printf("%d, %d -> %d [%d %d]\n", x_ / 2, y_, freqs[int(field_frequency_)], horizontal_.enable, vertical_.enable);
const int freqs[] = {50, 60, 72};
printf("%d, %d -> %d [%d %d]\n", x_ / 2, y_, freqs[int(field_frequency_)], horizontal_.enable, vertical_.enable);
}
// MARK: - The shifter