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Fix for mega65-core bug #797, alt palette selection only possible whe… #443

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Merged
merged 1 commit into from
Oct 16, 2025
Merged

Fix for mega65-core bug #797, alt palette selection only possible whe… #443

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15 changes: 9 additions & 6 deletions targets/mega65/vic4.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1479,14 +1479,17 @@ static XEMU_INLINE void vic4_render_char_raster ( void )
enable_bg_paint = 0;
else
enable_bg_paint = 1;
if (SXA_ATTR_BOLD(color_data) && SXA_ATTR_REVERSE(color_data) && !REG_VICIII_ATTRIBS)
used_palette = altpalette; // use the alternate palette from now in the scanline
else
used_palette = palette; // we do this as well, since there can be "double GOTOX" so we want back to "original" palette ...
if (SXA_4BIT_PER_PIXEL(color_data)) // this signals for rowmask [the rowmask itself is color_data & 0xFF]
if (SXA_4BIT_PER_PIXEL(color_data)) { // this signals for rowmask [the rowmask itself is color_data & 0xFF]
draw_mask = (color_data & (1 << char_row)) ? 0xFF : 0x00; // draw_mask is $FF (not masked) _or_ $00 (masked) ~ for the current char_row!
else
} else {
draw_mask = 0xFF;

// palette switches only allowed when rowmask=0
if (SXA_ATTR_BOLD(color_data) && SXA_ATTR_REVERSE(color_data) && !REG_VICIII_ATTRIBS)
used_palette = altpalette; // use the alternate palette from now in the scanline
else
used_palette = palette; // we do this as well, since there can be "double GOTOX" so we want back to "original" palette ...
}
continue;
}
}
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