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Diffstat (limited to 'src/mame/video/snk.cpp')
-rw-r--r--src/mame/video/snk.cpp51
1 files changed, 25 insertions, 26 deletions
diff --git a/src/mame/video/snk.cpp b/src/mame/video/snk.cpp
index b15fe0b0c04..60b51cb4f40 100644
--- a/src/mame/video/snk.cpp
+++ b/src/mame/video/snk.cpp
@@ -28,35 +28,34 @@
/**************************************************************************************/
-PALETTE_INIT_MEMBER(snk_state,tnk3)
+void snk_state::tnk3_palette(palette_device &palette) const
{
- const uint8_t *color_prom = memregion("proms")->base();
- int i;
- int num_colors = 0x400;
+ uint8_t const *const color_prom = memregion("proms")->base();
+ constexpr int num_colors = 0x400;
- for( i=0; i<num_colors; i++ )
+ for (int i = 0; i < num_colors; i++)
{
- int bit0=0,bit1,bit2,bit3,r,g,b;
-
- bit0 = (color_prom[i + 2*num_colors] >> 3) & 0x01;
- bit1 = (color_prom[i] >> 1) & 0x01;
- bit2 = (color_prom[i] >> 2) & 0x01;
- bit3 = (color_prom[i] >> 3) & 0x01;
- r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
-
- bit0 = (color_prom[i + 2*num_colors] >> 2) & 0x01;
- bit1 = (color_prom[i + num_colors] >> 2) & 0x01;
- bit2 = (color_prom[i + num_colors] >> 3) & 0x01;
- bit3 = (color_prom[i] >> 0) & 0x01;
- g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
-
- bit0 = (color_prom[i + 2*num_colors] >> 0) & 0x01;
- bit1 = (color_prom[i + 2*num_colors] >> 1) & 0x01;
- bit2 = (color_prom[i + num_colors] >> 0) & 0x01;
- bit3 = (color_prom[i + num_colors] >> 1) & 0x01;
- b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
-
- palette.set_pen_color(i,rgb_t(r,g,b));
+ int bit0, bit1, bit2, bit3;
+
+ bit0 = BIT(color_prom[i + 2*num_colors], 3);
+ bit1 = BIT(color_prom[i], 1);
+ bit2 = BIT(color_prom[i], 2);
+ bit3 = BIT(color_prom[i], 3);
+ int const r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ bit0 = BIT(color_prom[i + 2*num_colors], 2);
+ bit1 = BIT(color_prom[i + num_colors], 2);
+ bit2 = BIT(color_prom[i + num_colors], 3);
+ bit3 = BIT(color_prom[i], 0);
+ int const g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ bit0 = BIT(color_prom[i + 2*num_colors], 0);
+ bit1 = BIT(color_prom[i + 2*num_colors], 1);
+ bit2 = BIT(color_prom[i + num_colors], 0);
+ bit3 = BIT(color_prom[i + num_colors], 1);
+ int const b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+
+ palette.set_pen_color(i, rgb_t(r, g, b));
}
}