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/************************************************************************
Quiz Panicuru Fantasy video hardware
************************************************************************/
#include "emu.h"
#include "includes/quizpani.h"
static TILEMAP_MAPPER( bg_scan )
{
/* logical (col,row) -> memory offset */
return (row & 0x0f) + ((col & 0xff) << 4) + ((row & 0x70) << 8);
}
static TILE_GET_INFO( bg_tile_info )
{
quizpani_state *state = machine.driver_data<quizpani_state>();
int code = state->m_bg_videoram[tile_index];
SET_TILE_INFO(
1,
(code & 0xfff) + (0x1000 * state->m_bgbank),
code >> 12,
0);
}
static TILE_GET_INFO( txt_tile_info )
{
quizpani_state *state = machine.driver_data<quizpani_state>();
int code = state->m_txt_videoram[tile_index];
SET_TILE_INFO(
0,
(code & 0xfff) + (0x1000 * state->m_txtbank),
code >> 12,
0);
}
WRITE16_HANDLER( quizpani_bg_videoram_w )
{
quizpani_state *state = space->machine().driver_data<quizpani_state>();
state->m_bg_videoram[offset] = data;
tilemap_mark_tile_dirty(state->m_bg_tilemap, offset);
}
WRITE16_HANDLER( quizpani_txt_videoram_w )
{
quizpani_state *state = space->machine().driver_data<quizpani_state>();
state->m_txt_videoram[offset] = data;
tilemap_mark_tile_dirty(state->m_txt_tilemap, offset);
}
WRITE16_HANDLER( quizpani_tilesbank_w )
{
quizpani_state *state = space->machine().driver_data<quizpani_state>();
if (ACCESSING_BITS_0_7)
{
if(state->m_txtbank != (data & 0x30)>>4)
{
state->m_txtbank = (data & 0x30)>>4;
tilemap_mark_all_tiles_dirty(state->m_txt_tilemap);
}
if(state->m_bgbank != (data & 3))
{
state->m_bgbank = data & 3;
tilemap_mark_all_tiles_dirty(state->m_bg_tilemap);
}
}
}
VIDEO_START( quizpani )
{
quizpani_state *state = machine.driver_data<quizpani_state>();
state->m_bg_tilemap = tilemap_create(machine, bg_tile_info, bg_scan,16,16,256,32);
state->m_txt_tilemap = tilemap_create(machine, txt_tile_info,bg_scan,16,16,256,32);
tilemap_set_transparent_pen(state->m_txt_tilemap,15);
}
SCREEN_UPDATE( quizpani )
{
quizpani_state *state = screen->machine().driver_data<quizpani_state>();
tilemap_set_scrollx(state->m_bg_tilemap, 0, state->m_scrollreg[0] - 64);
tilemap_set_scrolly(state->m_bg_tilemap, 0, state->m_scrollreg[1] + 16);
tilemap_set_scrollx(state->m_txt_tilemap, 0, state->m_scrollreg[2] - 64);
tilemap_set_scrolly(state->m_txt_tilemap, 0, state->m_scrollreg[3] + 16);
tilemap_draw(bitmap,cliprect,state->m_bg_tilemap,0,0);
tilemap_draw(bitmap,cliprect,state->m_txt_tilemap,0,0);
return 0;
}
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