static WRITE16_HANDLER( video_regs_w )
{
pzletime_state *state = space->machine().driver_data<pzletime_state>();
int i;
COMBINE_DATA(&state->m_video_regs[offset]);
if (offset == 0)
{
if (state->m_video_regs[0] > 0)
{
for (i = 0; i < 0x300; i++)
{
palette_set_pen_contrast(space->machine(), i, (double)0x8000/(double)state->m_video_regs[0]);
}
}
}
else if (offset == 1)
{
if (state->m_video_regs[1] > 0)
{
for (i = 0x300; i < 32768 + 0x300; i++)
{
palette_set_pen_contrast(space->machine(), i, (double)0x8000/(double)state->m_video_regs[1]);
}
}
}
}
INPUT_PORTS_END
////////////////////
// PALETTE INIT //
////////////////////
void cybiko_state::palette_init()
{
// init palette
for (int i = 0; i < 4; i++)
{
palette_set_color(machine(), i, RGB_WHITE);
#ifndef HD66421_BRIGHTNESS_DOES_NOT_WORK
palette_set_pen_contrast(machine(), i, 1.0 * i / (4 - 1));
#endif
}
}
UINT32 hd66421_device::update_screen(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
pen_t pen[4];
_logerror( 1, ("video_update_hd66421\n"));
// update palette
for (int i = 0; i < 4; i++)
{
double bright;
int temp;
temp = 31 - (m_reg[LCD_REG_COLOR_1 + i] - m_reg[LCD_REG_CONTRAST] + 0x03);
if (temp < 0) temp = 0;
if (temp > 31) temp = 31;
bright = 1.0 * temp / 31;
pen[i] = i;
#ifdef HD66421_BRIGHTNESS_DOES_NOT_WORK
palette_set_color(machine(), pen[i], 255 * bright, 255 * bright, 255 * bright);
#else
palette_set_pen_contrast(machine(), pen[i], bright);
#endif
}
// draw bitmap (bottom to top)
if (m_reg[0] & LCD_R0_DISP)
{
int x, y;
x = 0;
y = HD66421_HEIGHT - 1;
for (int i = 0; i < HD66421_RAM_SIZE; i++)
{
plot_pixel(bitmap, x++, y, pen[(readbyte(i) >> 6) & 3]);
plot_pixel(bitmap, x++, y, pen[(readbyte(i) >> 4) & 3]);
plot_pixel(bitmap, x++, y, pen[(readbyte(i) >> 2) & 3]);
plot_pixel(bitmap, x++, y, pen[(readbyte(i) >> 0) & 3]);
if (x >= HD66421_WIDTH)
{
x = 0;
y = y - 1;
}
}
}
