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Merge pull request #4314 from hp9k/nereid_device_palette_interface

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nereid: use device_palette_interface (nw)
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ajrhacker 2018-11-18 22:47:24 -05:00 committed by GitHub
commit e567e10237
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2 changed files with 18 additions and 20 deletions
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31
src/devices/video/nereid.cpp
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@ -11,6 +11,7 @@ DEFINE_DEVICE_TYPE(NEREID, nereid_device, "nereid", "HP Nereid ASIC")
nereid_device::nereid_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, type, tag, owner, clock),
device_palette_interface(mconfig, *this),
m_red(0),
m_green(0),
m_blue(0),
@ -30,8 +31,6 @@ void nereid_device::device_start()
save_item(NAME(m_green));
save_item(NAME(m_blue));
save_item(NAME(m_index));
save_item(NAME(m_video_palette));
save_item(NAME(m_overlay_palette));
save_item(NAME(m_plane_mask));
save_item(NAME(m_overlay_ctl));
save_item(NAME(m_overlay_index));
@ -40,9 +39,8 @@ void nereid_device::device_start()
void nereid_device::device_reset()
{
std::fill(m_video_palette.begin(), m_video_palette.end(), 0);
std::fill(m_overlay_palette.begin(), m_overlay_palette.end(), 0);
for(int i = 0; i < palette_entries(); i++)
set_pen_color(i, rgb_t(0, 0, 0));
m_index = 0;
m_plane_mask = 0;
m_overlay_ctl = 0;
@ -136,20 +134,22 @@ WRITE16_MEMBER(nereid_device::ctrl_w)
const int index = (m_overlay_index >> 1) & 0x3;
LOG("NEREID: set overlay color index %u: rgb_t(%u,%u,%u)\n",
index, m_red, m_green, m_blue);
m_overlay_palette[index] = rgb_t(m_red, m_green, m_blue);
set_pen_color(index | 0x100, rgb_t(m_red, m_green, m_blue));
} else {
LOG("NEREID: set video color index %u: rgb_t(%u,%u,%u)\n",
m_index, m_red, m_green, m_blue);
m_video_palette[m_index] = rgb_t(m_red, m_green, m_blue);
set_pen_color(m_index, rgb_t(m_red, m_green, m_blue));
}
break;
case NEREID_READ_STROBE:
m_red = m_video_palette[m_index].r();
m_green = m_video_palette[m_index].g();
m_blue = m_video_palette[m_index].b();
{
rgb_t tmp = pen_color(m_index);
m_red = tmp.r();
m_green = tmp.g();
m_blue = tmp.b();
break;
}
case NEREID_PLANE_MASK:
m_plane_mask = data;
LOG("W NEREID_PLANE_MASK = %02x\n", m_plane_mask);
@ -180,8 +180,9 @@ rgb_t nereid_device::map_color(uint8_t input, uint8_t ovl)
{
ovl &= m_overlay_ctl;
if (ovl == 0)
return m_video_palette[input & m_plane_mask];
else
return m_overlay_palette[ovl & m_plane_mask];
if (ovl == 0) {
return pen_color(input & m_plane_mask);
} else {
return pen_color((ovl & m_plane_mask) | 0x100);
}
}

7
src/devices/video/nereid.h
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@ -5,7 +5,7 @@
#pragma once
class nereid_device : public device_t
class nereid_device : public device_t, public device_palette_interface
{
public:
nereid_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
@ -19,6 +19,7 @@ protected:
nereid_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
virtual void device_start() override;
virtual void device_reset() override;
virtual u32 palette_entries() const override { return 0x200; }
private:
static constexpr int NEREID_BUSY=1;
@ -38,10 +39,6 @@ private:
static constexpr int NEREID_WRITE_STROBE=0x78;
static constexpr int NEREID_READ_STROBE=0x7c;
std::array<rgb_t, 256> m_video_palette;
std::array<rgb_t, 256> m_overlay_palette;
/* registers */
uint8_t m_red;
uint8_t m_green;