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Diffstat (limited to 'src/mame/video/sonson.cpp')
-rw-r--r--src/mame/video/sonson.cpp34
1 files changed, 16 insertions, 18 deletions
diff --git a/src/mame/video/sonson.cpp b/src/mame/video/sonson.cpp
index d27377b3756..f77f557e669 100644
--- a/src/mame/video/sonson.cpp
+++ b/src/mame/video/sonson.cpp
@@ -41,55 +41,53 @@
***************************************************************************/
-PALETTE_INIT_MEMBER(sonson_state, sonson)
+void sonson_state::sonson_palette(palette_device &palette) const
{
const uint8_t *color_prom = memregion("proms")->base();
- int i;
- /* create a lookup table for the palette */
- for (i = 0; i < 0x20; i++)
+ // create a lookup table for the palette
+ for (int i = 0; i < 0x20; i++)
{
int bit0, bit1, bit2, bit3;
- int r, g, b;
- /* red component */
+ // red component
bit0 = (color_prom[i + 0x20] >> 0) & 0x01;
bit1 = (color_prom[i + 0x20] >> 1) & 0x01;
bit2 = (color_prom[i + 0x20] >> 2) & 0x01;
bit3 = (color_prom[i + 0x20] >> 3) & 0x01;
- r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+ int const r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
- /* green component */
+ // green component
bit0 = (color_prom[i + 0x00] >> 4) & 0x01;
bit1 = (color_prom[i + 0x00] >> 5) & 0x01;
bit2 = (color_prom[i + 0x00] >> 6) & 0x01;
bit3 = (color_prom[i + 0x00] >> 7) & 0x01;
- g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+ int const g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
- /* blue component */
+ // blue component
bit0 = (color_prom[i + 0x00] >> 0) & 0x01;
bit1 = (color_prom[i + 0x00] >> 1) & 0x01;
bit2 = (color_prom[i + 0x00] >> 2) & 0x01;
bit3 = (color_prom[i + 0x00] >> 3) & 0x01;
- b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
+ int const b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
palette.set_indirect_color(i, rgb_t(r, g, b));
}
- /* color_prom now points to the beginning of the lookup table */
+ // color_prom now points to the beginning of the lookup table
color_prom += 0x40;
- /* characters use colors 0-0x0f */
- for (i = 0; i < 0x100; i++)
+ // characters use colors 0-0x0f
+ for (int i = 0; i < 0x100; i++)
{
- uint8_t ctabentry = color_prom[i] & 0x0f;
+ uint8_t const ctabentry = color_prom[i] & 0x0f;
palette.set_pen_indirect(i, ctabentry);
}
- /* sprites use colors 0x10-0x1f */
- for (i = 0x100; i < 0x200; i++)
+ // sprites use colors 0x10-0x1f
+ for (int i = 0x100; i < 0x200; i++)
{
- uint8_t ctabentry = (color_prom[i] & 0x0f) | 0x10;
+ uint8_t const ctabentry = (color_prom[i] & 0x0f) | 0x10;
palette.set_pen_indirect(i, ctabentry);
}
}