// license:BSD-3-Clause // copyright-holders:Ernesto Corvi #include "emu.h" #include "includes/mexico86.h" WRITE8_MEMBER(mexico86_state::mexico86_bankswitch_w) { if ((data & 7) > 5) popmessage("Switching to invalid bank!"); membank("bank1")->set_entry(data & 0x07); m_charbank = BIT(data, 5); } uint32_t mexico86_state::screen_update_mexico86(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int offs; int sx, sy, xc, yc; int gfx_num, gfx_attr, gfx_offs; /* Bubble Bobble doesn't have a real video RAM. All graphics (characters */ /* and sprites) are stored in the same memory region, and information on */ /* the background character columns is stored inthe area dd00-dd3f */ bitmap.fill(255, cliprect); sx = 0; /* the score display seems to be outside of the main objectram. */ for (offs = 0x1500; offs < 0x2000; offs += 4) { int height; if (offs >= 0x1800 && offs < 0x1980) continue; if (offs >= 0x19c0) continue; /* skip empty sprites */ /* this is dword aligned so the uint32_t * cast shouldn't give problems */ /* on any architecture */ if (*(uint32_t *)(&m_mainram[offs]) == 0) continue; gfx_num = m_mainram[offs + 1]; gfx_attr = m_mainram[offs + 3]; if (!BIT(gfx_num, 7)) /* 16x16 sprites */ { gfx_offs = ((gfx_num & 0x1f) * 0x80) + ((gfx_num & 0x60) >> 1) + 12; height = 2; } else /* tilemaps (each sprite is a 16x256 column) */ { gfx_offs = ((gfx_num & 0x3f) * 0x80); height = 32; } if ((gfx_num & 0xc0) == 0xc0) /* next column */ sx += 16; else { sx = m_mainram[offs + 2]; //if (gfx_attr & 0x40) sx -= 256; } sy = 256 - height * 8 - (m_mainram[offs + 0]); for (xc = 0; xc < 2; xc++) { for (yc = 0; yc < height; yc++) { int goffs, code, color, flipx, flipy, x, y; goffs = gfx_offs + xc * 0x40 + yc * 0x02; code = m_mainram[goffs] + ((m_mainram[goffs + 1] & 0x07) << 8) + ((m_mainram[goffs + 1] & 0x80) << 4) + (m_charbank << 12); color = ((m_mainram[goffs + 1] & 0x38) >> 3) + ((gfx_attr & 0x02) << 2); flipx = m_mainram[goffs + 1] & 0x40; flipy = 0; //x = sx + xc * 8; x = (sx + xc * 8) & 0xff; y = (sy + yc * 8) & 0xff; m_gfxdecode->gfx(0)->transpen(bitmap,cliprect, code, color, flipx,flipy, x,y,15); } } } return 0; } uint32_t mexico86_state::screen_update_kikikai(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int offs; int sx, sy, yc; int gfx_num, /*gfx_attr,*/ gfx_offs; int height; int goffs, code, color, y; int tx, ty; bitmap.fill(m_palette->black_pen(), cliprect); sx = 0; for (offs = 0x1500; offs < 0x1800; offs += 4) { if (*(uint32_t*)(m_mainram + offs) == 0) continue; ty = m_mainram[offs]; gfx_num = m_mainram[offs + 1]; tx = m_mainram[offs + 2]; //gfx_attr = m_mainram[offs + 3]; if (gfx_num & 0x80) { gfx_offs = ((gfx_num & 0x3f) << 7); height = 32; if (gfx_num & 0x40) sx += 16; else sx = tx; } else { if (!(ty && tx)) continue; gfx_offs = ((gfx_num & 0x1f) << 7) + ((gfx_num & 0x60) >> 1) + 12; height = 2; sx = tx; } sy = 256 - (height << 3) - ty; height <<= 1; for (yc = 0; yc < height; yc += 2) { y = (sy + (yc << 2)) & 0xff; goffs = gfx_offs + yc; code = m_mainram[goffs] + ((m_mainram[goffs + 1] & 0x1f) << 8); color = (m_mainram[goffs + 1] & 0xe0) >> 5; goffs += 0x40; m_gfxdecode->gfx(0)->transpen(bitmap,cliprect, code, color, 0,0, sx&0xff,y,15); code = m_mainram[goffs] + ((m_mainram[goffs + 1] & 0x1f) << 8); color = (m_mainram[goffs + 1] & 0xe0) >> 5; m_gfxdecode->gfx(0)->transpen(bitmap,cliprect, code, color, 0,0, (sx+8)&0xff,y,15); } } return 0; }