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Fix MDA refresh rate

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Also improve monochrome contrast menu option
This commit is contained in:
Cacodemon345
2025-08-24 00:08:00 +06:00
parent 16e6332628
commit f1814d0c65
2 changed files with 6 additions and 3 deletions
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5
src/qt/qt_mainwindow.cpp
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@@ -1985,9 +1985,12 @@ MainWindow::on_actionCGA_PCjr_Tandy_EGA_S_VGA_overscan_triggered()
void
MainWindow::on_actionChange_contrast_for_monochrome_display_triggered()
{
startblit();
vid_cga_contrast ^= 1;
cgapal_rebuild();
for (int i = 0; i < MONITORS_NUM; i++)
cgapal_rebuild_monitor(i);
config_save();
endblit();
}
void

4
src/video/vid_mda.c
View File

@@ -130,8 +130,8 @@ mda_recalctimings(mda_t *mda)
double _dispontime;
double _dispofftime;
double disptime;
disptime = (mda->crtc[MDA_CRTC_HTOTAL] + 1) << 1;
_dispontime = (mda->crtc[MDA_CRTC_HDISP]) << 1;
disptime = (mda->crtc[MDA_CRTC_HTOTAL] + 1);
_dispontime = (mda->crtc[MDA_CRTC_HDISP]);
_dispofftime = disptime - _dispontime;
_dispontime *= MDACONST;
_dispofftime *= MDACONST;