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315_5124.cpp: Fix color in SMS1 VDP(315-5124), Add hardware notes (#7855)

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cam900 2021-05-27 01:07:02 +09:00 committed by GitHub
parent 47326ba9b8
commit ec2bec33c2
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1 changed files with 21 additions and 18 deletions
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src/devices/video/315_5124.cpp
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@ -139,32 +139,35 @@ DEFINE_DEVICE_TYPE(SEGA315_5377, sega315_5377_device, "sega315_5377", "Sega 315-
// (reference for VDP colors: http://www.sega-16.com/forum/showthread.php?30530-SMS-VDP-output-levels)
void sega315_5124_device::sega315_5124_palette(palette_device &palette) const
{
static constexpr u8 level[4] = {0,90,173,255};
// blue channel is non-linear, verified from die shot
// reference: https://www.retrorgb.com/sega-master-system-blue-channel-mysteries-further-uncovered.html
static constexpr u8 level[4] = {0,78,160,238};
static constexpr u8 blue_level[4] = {0,98,160,238};
for (int i = 0; i < 64; i++)
{
const u8 r = i & 0x03;
const u8 g = (i & 0x0c) >> 2;
const u8 b = (i & 0x30) >> 4;
palette.set_pen_color(i, level[r], level[g], level[b]);
palette.set_pen_color(i, level[r], level[g], blue_level[b]);
}
// sms and sg1000-mark3 uses a different palette for modes 0 to 3 - see http://www.smspower.org/Development/Palette
// TMS9918 palette
palette.set_pen_color(64+ 0, level[0], level[0], level[0]); // palette.set_pen_color(64+ 0, 0, 0, 0);
palette.set_pen_color(64+ 1, level[0], level[0], level[0]); // palette.set_pen_color(64+ 1, 0, 0, 0);
palette.set_pen_color(64+ 2, level[0], level[2], level[0]); // palette.set_pen_color(64+ 2, 33, 200, 66);
palette.set_pen_color(64+ 3, level[0], level[3], level[0]); // palette.set_pen_color(64+ 3, 94, 220, 120);
palette.set_pen_color(64+ 4, level[0], level[0], level[1]); // palette.set_pen_color(64+ 4, 84, 85, 237);
palette.set_pen_color(64+ 5, level[0], level[0], level[3]); // palette.set_pen_color(64+ 5, 125, 118, 252);
palette.set_pen_color(64+ 6, level[1], level[0], level[0]); // palette.set_pen_color(64+ 6, 212, 82, 77);
palette.set_pen_color(64+ 7, level[0], level[3], level[3]); // palette.set_pen_color(64+ 7, 66, 235, 245);
palette.set_pen_color(64+ 8, level[2], level[0], level[0]); // palette.set_pen_color(64+ 8, 252, 85, 84);
palette.set_pen_color(64+ 9, level[3], level[0], level[0]); // palette.set_pen_color(64+ 9, 255, 121, 120);
palette.set_pen_color(64+10, level[1], level[1], level[0]); // palette.set_pen_color(64+10, 212, 193, 84);
palette.set_pen_color(64+11, level[3], level[3], level[0]); // palette.set_pen_color(64+11, 230, 206, 128);
palette.set_pen_color(64+12, level[0], level[1], level[0]); // palette.set_pen_color(64+12, 33, 176, 59);
palette.set_pen_color(64+13, level[3], level[0], level[3]); // palette.set_pen_color(64+13, 201, 91, 186);
palette.set_pen_color(64+14, level[1], level[1], level[1]); // palette.set_pen_color(64+14, 204, 204, 204);
palette.set_pen_color(64+15, level[3], level[3], level[3]); // palette.set_pen_color(64+15, 255, 255, 255);
palette.set_pen_color(64+ 0, level[0], level[0], blue_level[0]); // palette.set_pen_color(64+ 0, 0, 0, 0);
palette.set_pen_color(64+ 1, level[0], level[0], blue_level[0]); // palette.set_pen_color(64+ 1, 0, 0, 0);
palette.set_pen_color(64+ 2, level[0], level[2], blue_level[0]); // palette.set_pen_color(64+ 2, 33, 200, 66);
palette.set_pen_color(64+ 3, level[0], level[3], blue_level[0]); // palette.set_pen_color(64+ 3, 94, 220, 120);
palette.set_pen_color(64+ 4, level[0], level[0], blue_level[1]); // palette.set_pen_color(64+ 4, 84, 85, 237);
palette.set_pen_color(64+ 5, level[0], level[0], blue_level[3]); // palette.set_pen_color(64+ 5, 125, 118, 252);
palette.set_pen_color(64+ 6, level[1], level[0], blue_level[0]); // palette.set_pen_color(64+ 6, 212, 82, 77);
palette.set_pen_color(64+ 7, level[0], level[3], blue_level[3]); // palette.set_pen_color(64+ 7, 66, 235, 245);
palette.set_pen_color(64+ 8, level[2], level[0], blue_level[0]); // palette.set_pen_color(64+ 8, 252, 85, 84);
palette.set_pen_color(64+ 9, level[3], level[0], blue_level[0]); // palette.set_pen_color(64+ 9, 255, 121, 120);
palette.set_pen_color(64+10, level[1], level[1], blue_level[0]); // palette.set_pen_color(64+10, 212, 193, 84);
palette.set_pen_color(64+11, level[3], level[3], blue_level[0]); // palette.set_pen_color(64+11, 230, 206, 128);
palette.set_pen_color(64+12, level[0], level[1], blue_level[0]); // palette.set_pen_color(64+12, 33, 176, 59);
palette.set_pen_color(64+13, level[3], level[0], blue_level[3]); // palette.set_pen_color(64+13, 201, 91, 186);
palette.set_pen_color(64+14, level[1], level[1], blue_level[1]); // palette.set_pen_color(64+14, 204, 204, 204);
palette.set_pen_color(64+15, level[3], level[3], blue_level[3]); // palette.set_pen_color(64+15, 255, 255, 255);
}