#include "emu.h"
#include "includes/deniam.h"
static void deniam_common_init( running_machine &machine )
{
deniam_state *state = machine.driver_data<deniam_state>();
int i;
state->m_bg_scrollx_reg = 0x00a4/2;
state->m_bg_scrolly_reg = 0x00a8/2;
state->m_bg_page_reg = 0x00ac/2;
state->m_fg_scrollx_reg = 0x00a2/2;
state->m_fg_scrolly_reg = 0x00a6/2;
state->m_fg_page_reg = 0x00aa/2;
state->m_display_enable = 0;
state->m_coinctrl = 0;
for (i = 0; i < 4; i++)
{
state->m_bg_page[i] = 0;
state->m_fg_page[i] = 0;
}
}
DRIVER_INIT( logicpro )
{
deniam_state *state = machine.driver_data<deniam_state>();
deniam_common_init(machine);
state->m_bg_scrollx_offs = 0x00d;
state->m_bg_scrolly_offs = 0x000;
state->m_fg_scrollx_offs = 0x009;
state->m_fg_scrolly_offs = 0x000;
}
DRIVER_INIT( karianx )
{
deniam_state *state = machine.driver_data<deniam_state>();
deniam_common_init(machine);
state->m_bg_scrollx_offs = 0x10d;
state->m_bg_scrolly_offs = 0x080;
state->m_fg_scrollx_offs = 0x109;
state->m_fg_scrolly_offs = 0x080;
}
/***************************************************************************
Callbacks for the TileMap code
***************************************************************************/
static TILEMAP_MAPPER( scan_pages )
{
/* logical (col,row) -> memory offset */
return (col & 0x3f) + ((row & 0x1f) << 6) + ((col & 0x40) << 5) + ((row & 0x20) << 7);
}
static TILE_GET_INFO( get_bg_tile_info )
{
deniam_state *state = machine.driver_data<deniam_state>();
int page = tile_index >> 11;
UINT16 attr = state->m_videoram[state->m_bg_page[page] * 0x0800 + (tile_index & 0x7ff)];
SET_TILE_INFO(
0,
attr,
(attr & 0x1fc0) >> 6,
0);
}
static TILE_GET_INFO( get_fg_tile_info )
{
deniam_state *state = machine.driver_data<deniam_state>();
int page = tile_index >> 11;
UINT16 attr = state->m_videoram[state->m_fg_page[page] * 0x0800 + (tile_index & 0x7ff)];
SET_TILE_INFO(
0,
attr,
(attr & 0x1fc0) >> 6,
0);
}
static TILE_GET_INFO( get_tx_tile_info )
{
deniam_state *state = machine.driver_data<deniam_state>();
UINT16 attr = state->m_textram[tile_index];
SET_TILE_INFO(
0,
attr & 0xf1ff,
(attr & 0x0e00) >> 9,
0);
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
VIDEO_START( deniam )
{
deniam_state *state = machine.driver_data<deniam_state>();
state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, scan_pages, 8, 8, 128, 64);
state->m_fg_tilemap = tilemap_create(machine, get_fg_tile_info, scan_pages, 8, 8, 128, 64);
state->m_tx_tilemap = tilemap_create(machine, get_tx_tile_info, tilemap_scan_rows, 8, 8, 64, 32);
tilemap_set_transparent_pen(state->m_fg_tilemap, 0);
tilemap_set_transparent_pen(state->m_tx_tilemap, 0);
}
/***************************************************************************
Memory handlers
***************************************************************************/
WRITE16_HANDLER( deniam_videoram_w )
{
deniam_state *state = space->machine().driver_data<deniam_state>();
int page, i;
COMBINE_DATA(&state->m_videoram[offset]);
page = offset >> 11;
for (i = 0; i < 4; i++)
{
if (state->m_bg_page[i] == page)
tilemap_mark_tile_dirty(state->m_bg_tilemap, i * 0x800 + (offset & 0x7ff));
if (state->m_fg_page[i] == page)
tilemap_mark_tile_dirty(state->m_fg_tilemap, i * 0x800 + (offset & 0x7ff));
}
}
WRITE16_HANDLER( deniam_textram_w )
{
deniam_state *state = space->machine().driver_data<deniam_state>();
COMBINE_DATA(&state->m_textram[offset]);
tilemap_mark_tile_dirty(state->m_tx_tilemap, offset);
}
WRITE16_HANDLER( deniam_palette_w )
{
deniam_state *state = space->machine().driver_data<deniam_state>();
int r, g, b;
data = COMBINE_DATA(&state->m_paletteram[offset]);
r = ((data << 1) & 0x1e) | ((data >> 12) & 0x01);
g = ((data >> 3) & 0x1e) | ((data >> 13) & 0x01);
b = ((data >> 7) & 0x1e) | ((data >> 14) & 0x01);
palette_set_color_rgb(space->machine(), offset, pal5bit(r), pal5bit(g), pal5bit(b));
}
READ16_HANDLER( deniam_coinctrl_r )
{
deniam_state *state = space->machine().driver_data<deniam_state>();
return state->m_coinctrl;
}
WRITE16_HANDLER( deniam_coinctrl_w )
{
deniam_state *state = space->machine().driver_data<deniam_state>();
COMBINE_DATA(&state->m_coinctrl);
/* bit 0 is coin counter */
coin_counter_w(space->machine(), 0, state->m_coinctrl & 0x01);
/* bit 6 is display enable (0 freezes screen) */
state->m_display_enable = state->m_coinctrl & 0x20;
/* other bits unknown (unused?) */
}
/***************************************************************************
Display refresh
***************************************************************************/
/*
* Sprite Format
* ------------------
*
* Word | Bit(s) | Use
* -----+-fedcba9876543210-+----------------
* 0 | --------xxxxxxxx | display y start
* 0 | xxxxxxxx-------- | display y end
* 2 | -------xxxxxxxxx | x position
* 2 | ------x--------- | unknown (used in logicpr2, maybe just a bug?)
* 2 | xxxxxx---------- | unused?
* 4 | ---------xxxxxxx | width
* 4 | --------x------- | is this flip y like in System 16?
* 4 | -------x-------- | flip x
* 4 | xxxxxxx--------- | unused?
* 6 | xxxxxxxxxxxxxxxx | ROM address low bits
* 8 | ----------xxxxxx | color
* 8 | --------xx------ | priority
* 8 | ---xxxxx-------- | ROM address high bits
* 8 | xxx------------- | unused? (extra address bits for larger ROMs?)
* a | ---------------- | zoomx like in System 16?
* c | ---------------- | zoomy like in System 16?
* e | ---------------- |
*/
static void draw_sprites( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect )
{
deniam_state *state = machine.driver_data<deniam_state>();
int offs;
UINT8 *gfx = machine.region("gfx2")->base();
for (offs = state->m_spriteram_size / 2 - 8; offs >= 0; offs -= 8)
{
int sx, starty, endy, x, y, start, color, width, flipx, primask;
UINT8 *rom = gfx;
sx = (state->m_spriteram[offs + 1] & 0x01ff) + 16 * 8 - 1;
if (sx >= 512) sx -= 512;
starty = state->m_spriteram[offs + 0] & 0xff;
endy = state->m_spriteram[offs + 0] >> 8;
width = state->m_spriteram[offs + 2] & 0x007f;
flipx = state->m_spriteram[offs + 2] & 0x0100;
if (flipx) sx++;
color = 0x40 + (state->m_spriteram[offs + 4] & 0x3f);
primask = 8;
switch (state->m_spriteram[offs + 4] & 0xc0)
{
case 0x00: primask |= 4 | 2 | 1; break; /* below everything */
case 0x40: primask |= 4 | 2; break; /* below fg and tx */
case 0x80: primask |= 4; break; /* below tx */
case 0xc0: break; /* above everything */
}
start = state->m_spriteram[offs + 3] + ((state->m_spriteram[offs + 4] & 0x1f00) << 8);
rom += 2 * start;
for (y = starty + 1; y <= endy; y++)
{
int drawing = 0;
int i = 0;
rom += 2 * width; /* note that the first line is skipped */
x = 0;
while (i < 512) /* safety check */
{
if (flipx)
{
if ((rom[i] & 0x0f) == 0x0f)
{
if (!drawing) drawing = 1;
else break;
}
else
{
if (rom[i] & 0x0f)
{
if (sx + x >= cliprect->min_x && sx + x <= cliprect->max_x &&
y >= cliprect->min_y && y <= cliprect->max_y)
{
if ((*BITMAP_ADDR8(machine.priority_bitmap, y, sx + x) & primask) == 0)
*BITMAP_ADDR16(bitmap, y, sx + x) = color * 16 + (rom[i] & 0x0f);
*BITMAP_ADDR8(machine.priority_bitmap, y, sx + x) = 8;
}
}
x++;
}
if ((rom[i] & 0xf0) == 0xf0)
{
if (!drawing) drawing = 1;
else break;
}
else
{
if (rom[i] & 0xf0)
{
if (sx + x >= cliprect->min_x && sx + x <= cliprect->max_x &&
y >= cliprect->min_y && y <= cliprect->max_y)
{
if ((*BITMAP_ADDR8(machine.priority_bitmap, y, sx + x) & primask) == 0)
*BITMAP_ADDR16(bitmap, y, sx + x) = color * 16+(rom[i] >> 4);
*BITMAP_ADDR8(machine.priority_bitmap, y, sx + x) = 8;
}
}
x++;
}
i--;
}
else
{
if ((rom[i] & 0xf0) == 0xf0)
{
if (!drawing) drawing = 1;
else break;
}
else
{
if (rom[i] & 0xf0)
{
if (sx + x >= cliprect->min_x && sx + x <= cliprect->max_x &&
y >= cliprect->min_y && y <= cliprect->max_y)
{
if ((*BITMAP_ADDR8(machine.priority_bitmap, y, sx + x) & primask) == 0)
*BITMAP_ADDR16(bitmap, y, sx + x) = color * 16 + (rom[i] >> 4);
*BITMAP_ADDR8(machine.priority_bitmap, y, sx + x) = 8;
}
}
x++;
}
if ((rom[i] & 0x0f) == 0x0f)
{
if (!drawing) drawing = 1;
else break;
}
else
{
if (rom[i] & 0x0f)
{
if (sx + x >= cliprect->min_x && sx + x <= cliprect->max_x &&
y >= cliprect->min_y && y <= cliprect->max_y)
{
if ((*BITMAP_ADDR8(machine.priority_bitmap, y, sx + x) & primask) == 0)
*BITMAP_ADDR16(bitmap, y, sx + x) = color * 16 + (rom[i] & 0x0f);
*BITMAP_ADDR8(machine.priority_bitmap, y, sx + x) = 8;
}
}
x++;
}
i++;
}
}
}
}
}
static void set_bg_page( running_machine &machine, int page, int value )
{
deniam_state *state = machine.driver_data<deniam_state>();
int tile_index;
if (state->m_bg_page[page] != value)
{
state->m_bg_page[page] = value;
for (tile_index = page * 0x800; tile_index < (page + 1) * 0x800; tile_index++)
tilemap_mark_tile_dirty(state->m_bg_tilemap, tile_index);
}
}
static void set_fg_page( running_machine &machine, int page, int value )
{
deniam_state *state = machine.driver_data<deniam_state>();
int tile_index;
if (state->m_fg_page[page] != value)
{
state->m_fg_page[page] = value;
for (tile_index = page * 0x800; tile_index < (page + 1) * 0x800; tile_index++)
tilemap_mark_tile_dirty(state->m_fg_tilemap, tile_index);
}
}
SCREEN_UPDATE( deniam )
{
deniam_state *state = screen->machine().driver_data<deniam_state>();
int bg_scrollx, bg_scrolly, fg_scrollx, fg_scrolly;
int page;
if (!state->m_display_enable)
return 0; /* don't update (freeze display) */
bg_scrollx = state->m_textram[state->m_bg_scrollx_reg] - state->m_bg_scrollx_offs;
bg_scrolly = (state->m_textram[state->m_bg_scrolly_reg] & 0xff) - state->m_bg_scrolly_offs;
page = state->m_textram[state->m_bg_page_reg];
set_bg_page(screen->machine(), 3, (page >>12) & 0x0f);
set_bg_page(screen->machine(), 2, (page >> 8) & 0x0f);
set_bg_page(screen->machine(), 1, (page >> 4) & 0x0f);
set_bg_page(screen->machine(), 0, (page >> 0) & 0x0f);
fg_scrollx = state->m_textram[state->m_fg_scrollx_reg] - state->m_fg_scrollx_offs;
fg_scrolly = (state->m_textram[state->m_fg_scrolly_reg] & 0xff) - state->m_fg_scrolly_offs;
page = state->m_textram[state->m_fg_page_reg];
set_fg_page(screen->machine(), 3, (page >>12) & 0x0f);
set_fg_page(screen->machine(), 2, (page >> 8) & 0x0f);
set_fg_page(screen->machine(), 1, (page >> 4) & 0x0f);
set_fg_page(screen->machine(), 0, (page >> 0) & 0x0f);
tilemap_set_scrollx(state->m_bg_tilemap, 0, bg_scrollx & 0x1ff);
tilemap_set_scrolly(state->m_bg_tilemap, 0, bg_scrolly & 0x0ff);
tilemap_set_scrollx(state->m_fg_tilemap, 0, fg_scrollx & 0x1ff);
tilemap_set_scrolly(state->m_fg_tilemap, 0, fg_scrolly & 0x0ff);
bitmap_fill(screen->machine().priority_bitmap, cliprect, 0);
tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 1);
tilemap_draw(bitmap, cliprect, state->m_fg_tilemap, 0, 2);
tilemap_draw(bitmap, cliprect, state->m_tx_tilemap, 0, 4);
draw_sprites(screen->machine(), bitmap, cliprect);
return 0;
}