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Merge pull request #1276 from TomHarte/AppleIIColourText

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Don't disable the colour burst in mixed mode.
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Thomas Harte 2023-12-18 21:53:07 -05:00 committed by GitHub
commit be7e776fa4
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1 changed files with 4 additions and 1 deletions
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5
Machines/Apple/AppleII/Video.hpp
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@ -460,7 +460,10 @@ template <class BusHandler, bool is_iie> class Video: public VideoBase {
}
int second_blank_start;
if(!is_text_mode(graphics_mode(row_+1))) {
// Colour burst is present on all lines of the display if graphics mode is enabled on the top
// portion; therefore use the graphics mode on line 0 rather than the current line, to avoid
// disabling it in mixed modes.
if(!is_text_mode(graphics_mode(0))) {
const int colour_burst_start = std::max(first_sync_column + sync_length + 1, column_);
const int colour_burst_end = std::min(first_sync_column + sync_length + 4, ending_column);
if(colour_burst_end > colour_burst_start) {