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Diffstat (limited to 'src/mame/video/bking.cpp')
-rw-r--r--src/mame/video/bking.cpp41
1 files changed, 18 insertions, 23 deletions
diff --git a/src/mame/video/bking.cpp b/src/mame/video/bking.cpp
index d39212ad6f2..678482e5d7b 100644
--- a/src/mame/video/bking.cpp
+++ b/src/mame/video/bking.cpp
@@ -30,55 +30,50 @@
***************************************************************************/
-PALETTE_INIT_MEMBER(bking_state, bking)
+void bking_state::bking_palette(palette_device &palette) const
{
const uint8_t *color_prom = memregion("proms")->base();
- static const int resistances_rg[3] = { 220, 390, 820 };
- static const int resistances_b [2] = { 220, 390 };
- double rweights[3], gweights[3], bweights[2];
- int i;
+ static constexpr int resistances_rg[3] = { 220, 390, 820 };
+ static constexpr int resistances_b [2] = { 220, 390 };
- /* compute the color output resistor weights */
+ // compute the color output resistor weights
+ double rweights[3], gweights[3], bweights[2];
compute_resistor_weights(0, 255, -1.0,
3, &resistances_rg[0], rweights, 0, 0,
3, &resistances_rg[0], gweights, 0, 0,
2, &resistances_b[0], bweights, 0, 0);
- for (i = 0; i < palette.entries(); i++)
+ for (int i = 0; i < palette.entries(); i++)
{
uint16_t pen;
- int bit0, bit1, bit2, r, g, b;
+ int bit0, bit1, bit2;
- /* color PROM A7-A8 is the palette select */
- if (i < 0x20)
- /* characters - image bits go to A0-A2 of the color PROM */
+ // color PROM A7-A8 is the palette select
+ if (i < 0x20) // characters - image bits go to A0-A2 of the color PROM
pen = (((i - 0x00) << 4) & 0x180) | ((i - 0x00) & 0x07);
- else if (i < 0x30)
- /* crow - image bits go to A5-A6. */
+ else if (i < 0x30) // crow - image bits go to A5-A6.
pen = (((i - 0x20) << 5) & 0x180) | (((i - 0x20) & 0x03) << 5);
- else if (i < 0x38)
- /* ball #1 - image bit goes to A3 */
+ else if (i < 0x38) // ball #1 - image bit goes to A3
pen = (((i - 0x30) << 6) & 0x180) | (((i - 0x30) & 0x01) << 3);
- else
- /* ball #2 - image bit goes to A4 */
+ else // ball #2 - image bit goes to A4
pen = (((i - 0x38) << 6) & 0x180) | (((i - 0x38) & 0x01) << 4);
- /* red component */
+ // red component
bit0 = (color_prom[pen] >> 0) & 0x01;
bit1 = (color_prom[pen] >> 1) & 0x01;
bit2 = (color_prom[pen] >> 2) & 0x01;
- r = combine_3_weights(rweights, bit0, bit1, bit2);
+ int const r = combine_3_weights(rweights, bit0, bit1, bit2);
- /* green component */
+ // green component
bit0 = (color_prom[pen] >> 3) & 0x01;
bit1 = (color_prom[pen] >> 4) & 0x01;
bit2 = (color_prom[pen] >> 5) & 0x01;
- g = combine_3_weights(gweights, bit0, bit1, bit2);
+ int const g = combine_3_weights(gweights, bit0, bit1, bit2);
- /* blue component */
+ // blue component
bit0 = (color_prom[pen] >> 6) & 0x01;
bit1 = (color_prom[pen] >> 7) & 0x01;
- b = combine_2_weights(gweights, bit0, bit1);
+ int const b = combine_2_weights(gweights, bit0, bit1);
palette.set_pen_color(i, rgb_t(r, g, b));
}