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/***************************************************************************
lviv.c
Functions to emulate the video hardware of PK-01 Lviv.
Krzysztof Strzecha
***************************************************************************/
#include "emu.h"
#include "includes/lviv.h"
const unsigned char lviv_palette[8*3] =
{
0x00, 0x00, 0x00,
0x00, 0x00, 0xa4,
0x00, 0xa4, 0x00,
0x00, 0xa4, 0xa4,
0xa4, 0x00, 0x00,
0xa4, 0x00, 0xa4,
0xa4, 0xa4, 0x00,
0xa4, 0xa4, 0xa4
};
PALETTE_INIT_MEMBER(lviv_state, lviv)
{
int i;
for ( i = 0; i < sizeof(lviv_palette) / 3; i++ ) {
m_palette->set_pen_color(i, lviv_palette[i*3], lviv_palette[i*3+1], lviv_palette[i*3+2]);
}
}
void lviv_state::lviv_update_palette(UINT8 pal)
{
m_colortable[0][0] = 0;
m_colortable[0][1] = 0;
m_colortable[0][2] = 0;
m_colortable[0][3] = 0;
m_colortable[0][0] |= (((pal>>3)&0x01) == ((pal>>4)&0x01)) ? 0x04 : 0x00;
m_colortable[0][0] |= ((pal>>5)&0x01) ? 0x02 : 0x00;
m_colortable[0][0] |= (((pal>>2)&0x01) == ((pal>>6)&0x01)) ? 0x01 : 0x00;
m_colortable[0][1] |= ((pal&0x01) == ((pal>>4)&0x01)) ? 0x04 : 0x00;
m_colortable[0][1] |= ((pal>>5)&0x01) ? 0x02 : 0x00;
m_colortable[0][1] |= ((pal>>6)&0x01) ? 0x00 : 0x01;
m_colortable[0][2] |= ((pal>>4)&0x01) ? 0x04 : 0x00;
m_colortable[0][2] |= ((pal>>5)&0x01) ? 0x00 : 0x02;
m_colortable[0][2] |= ((pal>>6)&0x01) ? 0x01 : 0x00;
m_colortable[0][3] |= ((pal>>4)&0x01) ? 0x00 : 0x04;
m_colortable[0][3] |= (((pal>>1)&0x01) == ((pal>>5)&0x01)) ? 0x02 : 0x00;
m_colortable[0][3] |= ((pal>>6)&0x01) ? 0x01 : 0x00;
}
void lviv_state::video_start()
{
}
UINT32 lviv_state::screen_update_lviv(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int x,y;
int pen;
UINT8 data;
for (y=0; y<256; y++)
for (x=0; x<256; x+=4)
{
data = m_video_ram[y*64+x/4];
pen = m_colortable[0][((data & 0x08) >> 3) | ((data & 0x80) >> (3+3))];
bitmap.pix16(y, x + 0) = pen;
pen = m_colortable[0][((data & 0x04) >> 2) | ((data & 0x40) >> (2+3))];
bitmap.pix16(y, x + 1) = pen;
pen = m_colortable[0][((data & 0x02) >> 1) | ((data & 0x20) >> (1+3))];
bitmap.pix16(y, x + 2) = pen;
pen = m_colortable[0][((data & 0x01) >> 0) | ((data & 0x10) >> (0+3))];
bitmap.pix16(y, x + 3) = pen;
}
return 0;
}
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