/******************************************************************************
Video Hardware for Nichibutsu Mahjong series.
Driver by Takahiro Nogi <nogi@kt.rim.or.jp> 1999/11/05 -
Special thanks to Tatsuyuki Satoh
******************************************************************************/
#include "emu.h"
#include "includes/nbmj9195.h"
static void nbmj9195_vramflip(running_machine &machine, int vram);
static void nbmj9195_gfxdraw(running_machine &machine, int vram);
/******************************************************************************
******************************************************************************/
READ8_HANDLER( nbmj9195_palette_r )
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
return state->m_palette[offset];
}
WRITE8_HANDLER( nbmj9195_palette_w )
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
int r, g, b;
state->m_palette[offset] = data;
if (offset & 1)
{
offset &= 0x1fe;
r = ((state->m_palette[offset + 0] & 0x0f) >> 0);
g = ((state->m_palette[offset + 0] & 0xf0) >> 4);
b = ((state->m_palette[offset + 1] & 0x0f) >> 0);
palette_set_color_rgb(space->machine(), (offset >> 1), pal4bit(r), pal4bit(g), pal4bit(b));
}
}
READ8_HANDLER( nbmj9195_nb22090_palette_r )
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
return state->m_nb22090_palette[offset];
}
WRITE8_HANDLER( nbmj9195_nb22090_palette_w )
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
int r, g, b;
int offs_h, offs_l;
state->m_nb22090_palette[offset] = data;
offs_h = (offset / 0x0300);
offs_l = (offset & 0x00ff);
r = state->m_nb22090_palette[(0x000 + (offs_h * 0x300) + offs_l)];
g = state->m_nb22090_palette[(0x100 + (offs_h * 0x300) + offs_l)];
b = state->m_nb22090_palette[(0x200 + (offs_h * 0x300) + offs_l)];
palette_set_color(space->machine(), ((offs_h * 0x100) + offs_l), MAKE_RGB(r, g, b));
}
/******************************************************************************
******************************************************************************/
static int nbmj9195_blitter_r(address_space *space, int offset, int vram)
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
int ret;
UINT8 *GFXROM = space->machine().region("gfx1")->base();
switch (offset)
{
case 0x00: ret = 0xfe | ((state->m_nb19010_busyflag & 0x01) ^ 0x01); break; // NB19010 Busy Flag
case 0x01: ret = GFXROM[state->m_blitter_src_addr[vram]]; break; // NB19010 GFX-ROM Read
default: ret = 0xff; break;
}
return ret;
}
static void nbmj9195_blitter_w(address_space *space, int offset, int data, int vram)
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
int new_line;
switch (offset)
{
case 0x00: state->m_blitter_direction_x[vram] = (data & 0x01) ? 1 : 0;
state->m_blitter_direction_y[vram] = (data & 0x02) ? 1 : 0;
state->m_clutmode[vram] = (data & 0x04) ? 1 : 0;
// if (data & 0x08) popmessage("Unknown GFX Flag!! (0x08)");
state->m_transparency[vram] = (data & 0x10) ? 1 : 0;
// if (data & 0x20) popmessage("Unknown GFX Flag!! (0x20)");
state->m_flipscreen[vram] = (data & 0x40) ? 0 : 1;
state->m_dispflag[vram] = (data & 0x80) ? 1 : 0;
nbmj9195_vramflip(space->machine(), vram);
break;
case 0x01: state->m_scrollx[vram] = (state->m_scrollx[vram] & 0x0100) | data; break;
case 0x02: state->m_scrollx[vram] = (state->m_scrollx[vram] & 0x00ff) | ((data << 8) & 0x0100);
new_line = space->machine().primary_screen->vpos();
if (state->m_flipscreen[vram])
{
for ( ; state->m_scanline[vram] < new_line; state->m_scanline[vram]++)
state->m_scrollx_raster[vram][state->m_scanline[vram]] = (((-state->m_scrollx[vram]) - 0x4e) & 0x1ff) << 1;
}
else
{
for ( ; state->m_scanline[vram] < new_line; state->m_scanline[vram]++)
state->m_scrollx_raster[vram][(state->m_scanline[vram] ^ 0x1ff)] = (((-state->m_scrollx[vram]) - 0x4e) & 0x1ff) << 1;
}
break;
case 0x03: state->m_scrolly[vram] = (state->m_scrolly[vram] & 0x0100) | data; break;
case 0x04: state->m_scrolly[vram] = (state->m_scrolly[vram] & 0x00ff) | ((data << 8) & 0x0100); break;
case 0x05: state->m_blitter_src_addr[vram] = (state->m_blitter_src_addr[vram] & 0xffff00) | data; break;
case 0x06: state->m_blitter_src_addr[vram] = (state->m_blitter_src_addr[vram] & 0xff00ff) | (data << 8); break;
case 0x07: state->m_blitter_src_addr[vram] = (state->m_blitter_src_addr[vram] & 0x00ffff) | (data << 16); break;
case 0x08: state->m_blitter_sizex[vram] = data; break;
case 0x09: state->m_blitter_sizey[vram] = data; break;
case 0x0a: state->m_blitter_destx[vram] = (state->m_blitter_destx[vram] & 0xff00) | data; break;
case 0x0b: state->m_blitter_destx[vram] = (state->m_blitter_destx[vram] & 0x00ff) | (data << 8); break;
case 0x0c: state->m_blitter_desty[vram] = (state->m_blitter_desty[vram] & 0xff00) | data; break;
case 0x0d: state->m_blitter_desty[vram] = (state->m_blitter_desty[vram] & 0x00ff) | (data << 8);
nbmj9195_gfxdraw(space->machine(), vram);
break;
default: break;
}
}
void nbmj9195_clutsel_w(address_space *space, int data)
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
state->m_clutsel = data;
}
static void nbmj9195_clut_w(address_space *space, int offset, int data, int vram)
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
state->m_clut[vram][((state->m_clutsel & 0xff) * 0x10) + (offset & 0x0f)] = data;
}
void nbmj9195_gfxflag2_w(address_space *space, int data)
{
nbmj9195_state *state = space->machine().driver_data<nbmj9195_state>();
state->m_gfxflag2 = data;
}
/******************************************************************************
******************************************************************************/
static void nbmj9195_vramflip(running_machine &machine, int vram)
{
nbmj9195_state *state = machine.driver_data<nbmj9195_state>();
int x, y;
UINT16 color1, color2;
int width = machine.primary_screen->width();
int height = machine.primary_screen->height();
if (state->m_flipscreen[vram] == state->m_flipscreen_old[vram]) return;
for (y = 0; y < (height / 2); y++)
{
for (x = 0; x < width; x++)
{
color1 = state->m_videoram[vram][(y * width) + x];
color2 = state->m_videoram[vram][((y ^ 0x1ff) * width) + (x ^ 0x3ff)];
state->m_videoram[vram][(y * width) + x] = color2;
state->m_videoram[vram][((y ^ 0x1ff) * width) + (x ^ 0x3ff)] = color1;
}
}
if (state->m_gfxdraw_mode == 2)
{
for (y = 0; y < (height / 2); y++)
{
for (x = 0; x < width; x++)
{
color1 = state->m_videoworkram[vram][(y * width) + x];
color2 = state->m_videoworkram[vram][((y ^ 0x1ff) * width) + (x ^ 0x3ff)];
state->m_videoworkram[vram][(y * width) + x] = color2;
state->m_videoworkram[vram][((y ^ 0x1ff) * width) + (x ^ 0x3ff)] = color1;
}
}
}
state->m_flipscreen_old[vram] = state->m_flipscreen[vram];
state->m_screen_refresh = 1;
}
static void update_pixel(running_machine &machine, int vram, int x, int y)
{
nbmj9195_state *state = machine.driver_data<nbmj9195_state>();
UINT16 color = state->m_videoram[vram][(y * machine.primary_screen->width()) + x];
*BITMAP_ADDR16(state->m_tmpbitmap[vram], y, x) = color;
}
static TIMER_CALLBACK( blitter_timer_callback )
{
nbmj9195_state *state = machine.driver_data<nbmj9195_state>();
state->m_nb19010_busyflag = 1;
}
static void nbmj9195_gfxdraw(running_machine &machine, int vram)
{
nbmj9195_state *state = machine.driver_data<nbmj9195_state>();
UINT8 *GFX = machine.region("gfx1")->base();
int width = machine.primary_screen->width();
int x, y;
int dx1, dx2, dy;
int startx, starty;
int sizex, sizey;
int skipx, skipy;
int ctrx, ctry;
UINT16 color, color1, color2;
int gfxaddr, gfxlen;
state->m_nb19010_busyctr = 0;
if ((state->m_gfxdraw_mode == 2) && (state->m_clutmode[vram]))
{
// NB22090 clut256 mode
state->m_blitter_sizex[vram] = GFX[((state->m_blitter_src_addr[vram] + 0) & 0x00ffffff)];
state->m_blitter_sizey[vram] = GFX[((state->m_blitter_src_addr[vram] + 1) & 0x00ffffff)];
}
if (state->m_blitter_direction_x[vram])
{
startx = state->m_blitter_destx[vram];
sizex = state->m_blitter_sizex[vram];
skipx = 1;
}
else
{
startx = state->m_blitter_destx[vram] + state->m_blitter_sizex[vram];
sizex = state->m_blitter_sizex[vram];
skipx = -1;
}
if (state->m_blitter_direction_y[vram])
{
starty = state->m_blitter_desty[vram];
sizey = state->m_blitter_sizey[vram];
skipy = 1;
}
else
{
starty = state->m_blitter_desty[vram] + state->m_blitter_sizey[vram];
sizey = state->m_blitter_sizey[vram];
skipy = -1;
}
gfxlen = machine.region("gfx1")->bytes();
gfxaddr = ((state->m_blitter_src_addr[vram] + 2) & 0x00ffffff);
for (y = starty, ctry = sizey; ctry >= 0; y += skipy, ctry--)
{
for (x = startx, ctrx = sizex; ctrx >= 0; x += skipx, ctrx--)
{
if ((gfxaddr > (gfxlen - 1)))
{
#ifdef MAME_DEBUG
popmessage("GFXROM ADDR OVER:%08X DX,%d,DY:%d,SX:%d,SY:%d", gfxaddr, startx, starty, sizex,sizey);
logerror("GFXROM ADDR OVER:%08X DX,%d,DY:%d,SX:%d,SY:%d\n", gfxaddr, startx, starty, sizex,sizey);
#endif
gfxaddr &= (gfxlen - 1);
}
color = GFX[gfxaddr++];
dx1 = (2 * x + 0) & 0x3ff;
dx2 = (2 * x + 1) & 0x3ff;
dy = y & 0x1ff;
if (!state->m_flipscreen[vram])
{
dx1 ^= 0x3ff;
dx2 ^= 0x3ff;
dy ^= 0x1ff;
}
if (state->m_blitter_direction_x[vram])
{
// flip
color1 = (color & 0x0f) >> 0;
color2 = (color & 0xf0) >> 4;
}
else
{
// normal
color1 = (color & 0xf0) >> 4;
color2 = (color & 0x0f) >> 0;
}
if ((state->m_gfxdraw_mode == 2) && (state->m_clutmode[vram]))
{
// clut256 mode
if (state->m_gfxflag2 & 0xc0)
{
// clut256 mode 1st(low)
state->m_videoworkram[vram][(dy * width) + dx1] &= 0x00f0;
state->m_videoworkram[vram][(dy * width) + dx1] |= color1 & 0x0f;
state->m_videoworkram[vram][(dy * width) + dx2] &= 0x00f0;
state->m_videoworkram[vram][(dy * width) + dx2] |= color2 & 0x0f;
continue;
}
else
{
// clut256 mode 2nd(high)
state->m_videoworkram[vram][(dy * width) + dx1] &= 0x000f;
state->m_videoworkram[vram][(dy * width) + dx1] |= (color1 & 0x0f) << 4;
state->m_videoworkram[vram][(dy * width) + dx2] &= 0x000f;
state->m_videoworkram[vram][(dy * width) + dx2] |= (color2 & 0x0f) << 4;
state->m_videoworkram[vram][(dy * width) + dx1] += state->m_clut[vram][(state->m_clutsel * 0x10)];
state->m_videoworkram[vram][(dy * width) + dx2] += state->m_clut[vram][(state->m_clutsel * 0x10)];
}
color1 = state->m_videoworkram[vram][(dy * width) + dx1];
color2 = state->m_videoworkram[vram][(dy * width) + dx2];
}
else
{
// clut16 mode
color1 = state->m_clut[vram][(state->m_clutsel * 0x10) + color1];
color2 = state->m_clut[vram][(state->m_clutsel * 0x10) + color2];
}
if (state->m_gfxdraw_mode == 2)
{
color1 |= (0x0100 * vram);
color2 |= (0x0100 * vram);
}
if (((color1 & 0x00ff) != 0x00ff) || (!state->m_transparency[vram]))
{
state->m_videoram[vram][(dy * width) + dx1] = color1;
update_pixel(machine, vram, dx1, dy);
}
if (((color2 & 0x00ff) != 0x00ff) || (!state->m_transparency[vram]))
{
state->m_videoram[vram][(dy * width) + dx2] = color2;
update_pixel(machine, vram, dx2, dy);
}
state->m_nb19010_busyctr++;
}
}
if ((state->m_gfxdraw_mode == 2) && (state->m_clutmode[vram]))
{
// NB22090 clut256 mode
state->m_blitter_src_addr[vram] = gfxaddr;
}
state->m_nb19010_busyflag = 0;
/* 1650ns per count */
machine.scheduler().timer_set(attotime::from_nsec(state->m_nb19010_busyctr * 1650), FUNC(blitter_timer_callback));
}
/******************************************************************************
******************************************************************************/
WRITE8_HANDLER( nbmj9195_blitter_0_w ) { nbmj9195_blitter_w(space, offset, data, 0); }
WRITE8_HANDLER( nbmj9195_blitter_1_w ) { nbmj9195_blitter_w(space, offset, data, 1); }
READ8_HANDLER( nbmj9195_blitter_0_r ) { return nbmj9195_blitter_r(space, offset, 0); }
READ8_HANDLER( nbmj9195_blitter_1_r ) { return nbmj9195_blitter_r(space, offset, 1); }
WRITE8_HANDLER( nbmj9195_clut_0_w ) { nbmj9195_clut_w(space, offset, data, 0); }
WRITE8_HANDLER( nbmj9195_clut_1_w ) { nbmj9195_clut_w(space, offset, data, 1); }
/******************************************************************************
******************************************************************************/
VIDEO_START( nbmj9195_1layer )
{
nbmj9195_state *state = machine.driver_data<nbmj9195_state>();
int width = machine.primary_screen->width();
int height = machine.primary_screen->height();
state->m_tmpbitmap[0] = machine.primary_screen->alloc_compatible_bitmap();
state->m_videoram[0] = auto_alloc_array_clear(machine, UINT16, width * height);
state->m_palette = auto_alloc_array(machine, UINT8, 0x200);
state->m_clut[0] = auto_alloc_array(machine, UINT8, 0x1000);
state->m_scanline[0] = state->m_scanline[1] = SCANLINE_MIN;
state->m_nb19010_busyflag = 1;
state->m_gfxdraw_mode = 0;
}
VIDEO_START( nbmj9195_2layer )
{
nbmj9195_state *state = machine.driver_data<nbmj9195_state>();
int width = machine.primary_screen->width();
int height = machine.primary_screen->height();
state->m_tmpbitmap[0] = machine.primary_screen->alloc_compatible_bitmap();
state->m_tmpbitmap[1] = machine.primary_screen->alloc_compatible_bitmap();
state->m_videoram[0] = auto_alloc_array_clear(machine, UINT16, width * height);
state->m_videoram[1] = auto_alloc_array_clear(machine, UINT16, width * height);
state->m_palette = auto_alloc_array(machine, UINT8, 0x200);
state->m_clut[0] = auto_alloc_array(machine, UINT8, 0x1000);
state->m_clut[1] = auto_alloc_array(machine, UINT8, 0x1000);
state->m_scanline[0] = state->m_scanline[1] = SCANLINE_MIN;
state->m_nb19010_busyflag = 1;
state->m_gfxdraw_mode = 1;
}
VIDEO_START( nbmj9195_nb22090 )
{
nbmj9195_state *state = machine.driver_data<nbmj9195_state>();
int width = machine.primary_screen->width();
int height = machine.primary_screen->height();
state->m_tmpbitmap[0] = machine.primary_screen->alloc_compatible_bitmap();
state->m_tmpbitmap[1] = machine.primary_screen->alloc_compatible_bitmap();
state->m_videoram[0] = auto_alloc_array_clear(machine, UINT16, width * height);
state->m_videoram[1] = auto_alloc_array_clear(machine, UINT16, width * height);
state->m_videoworkram[0] = auto_alloc_array_clear(machine, UINT16, width * height);
state->m_videoworkram[1] = auto_alloc_array_clear(machine, UINT16, width * height);
state->m_nb22090_palette = auto_alloc_array(machine, UINT8, 0xc00);
state->m_clut[0] = auto_alloc_array(machine, UINT8, 0x1000);
state->m_clut[1] = auto_alloc_array(machine, UINT8, 0x1000);
state->m_scanline[0] = state->m_scanline[1] = SCANLINE_MIN;
state->m_nb19010_busyflag = 1;
state->m_gfxdraw_mode = 2;
}
/******************************************************************************
******************************************************************************/
SCREEN_UPDATE( nbmj9195 )
{
nbmj9195_state *state = screen->machine().driver_data<nbmj9195_state>();
int i;
int x, y;
int scrolly[2];
if (state->m_screen_refresh)
{
int width = screen->width();
int height = screen->height();
state->m_screen_refresh = 0;
for (y = 0; y < height; y++)
for (x = 0; x < width; x++)
{
update_pixel(screen->machine(), 0, x, y);
if (state->m_gfxdraw_mode)
update_pixel(screen->machine(), 1, x, y);
}
}
for (i = 0; i < 2; i++)
{
if (state->m_flipscreen[i])
{
for ( ; state->m_scanline[i] < SCANLINE_MAX; state->m_scanline[i]++)
{
state->m_scrollx_raster[i][state->m_scanline[i]] = (((-state->m_scrollx[i]) - 0x4e) & 0x1ff) << 1;
}
scrolly[i] = (-state->m_scrolly[i]) & 0x1ff;
}
else
{
for ( ; state->m_scanline[i] < SCANLINE_MAX; state->m_scanline[i]++)
{
state->m_scrollx_raster[i][(state->m_scanline[i] ^ 0x1ff)] = (((-state->m_scrollx[i]) - 0x4e) & 0x1ff) << 1;
}
scrolly[i] = state->m_scrolly[i] & 0x1ff;
}
state->m_scanline[i] = SCANLINE_MIN;
}
if (state->m_dispflag[0])
// nbmj9195 1layer
copyscrollbitmap(bitmap, state->m_tmpbitmap[0], SCANLINE_MAX, state->m_scrollx_raster[0], 1, &scrolly[0], cliprect);
else
bitmap_fill(bitmap, 0, 0x0ff);
if (state->m_dispflag[1])
{
if (state->m_gfxdraw_mode == 1)
// nbmj9195 2layer
copyscrollbitmap_trans(bitmap, state->m_tmpbitmap[1], SCANLINE_MAX, state->m_scrollx_raster[1], 1, &scrolly[1], cliprect, 0x0ff);
if (state->m_gfxdraw_mode == 2)
// nbmj9195 nb22090 2layer
copyscrollbitmap_trans(bitmap, state->m_tmpbitmap[1], SCANLINE_MAX, state->m_scrollx_raster[1], 1, &scrolly[1], cliprect, 0x1ff);
}
return 0;
}