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Fixed frame restart when there is no adjustment period.

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Thomas Harte
2017-07-31 22:13:45 -04:00
parent f742fd5d4a
commit ffaa627820
1 changed files with 7 additions and 2 deletions
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9
Components/6845/CRTC6845.hpp
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@@ -98,7 +98,12 @@ template <class T> class CRTC6845 {
// check for entry into the overflow area
if(line_counter_ == registers_[4]) {
is_in_adjustment_period_ = true;
if(registers_[5]) {
is_in_adjustment_period_ = true;
} else {
line_address_ = (uint16_t)((registers_[12] << 8) | registers_[13]);
bus_state_.refresh_address = line_address_;
}
bus_state_.row_address = 0;
line_counter_ = 0;
}
@@ -108,7 +113,7 @@ template <class T> class CRTC6845 {
}
}
bus_state_.display_enable = line_is_visible_ && line_is_visible_;
bus_state_.display_enable = character_is_visible_ && line_is_visible_;
bus_handler_.perform_bus_cycle(bus_state_);
}
}