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Add TODO.

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This commit is contained in:
Thomas Harte 2024-10-09 11:48:08 -04:00
parent 0d71724598
commit 7759fb7e68
1 changed files with 3 additions and 1 deletions
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4
Components/6845/CRTC6845.hpp
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@ -262,6 +262,8 @@ template <class BusHandlerT, Personality personality, CursorType cursor_type> cl
}
if(character_reset_history_ & 4 && eom_latched_) {
// TODO: I don't believe the "add 1 for interlaced" test here is accurate; others represent the extra scanline as
// additional state, presumably because adjust total might be reprogrammed at any time.
const auto adjust_length = layout_.vertical.adjust + (layout_.interlace_mode_ != InterlaceMode::Off && odd_field_ ? 1 : 0);
is_in_adjustment_period_ |= adjustment_counter_ != adjust_length;
eof_latched_ |= adjustment_counter_ == adjust_length;
@ -315,10 +317,10 @@ template <class BusHandlerT, Personality personality, CursorType cursor_type> cl
// Vertical display enable.
if(is_first_scanline_) {
line_is_visible_ = true;
odd_field_ = bus_state_.field_count & 1;
} else if(line_is_visible_ && row_counter_ == layout_.vertical.displayed) {
line_is_visible_ = false;
++bus_state_.field_count;
odd_field_ ^= true;
}