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Diffstat (limited to 'src/mame/video/gberet.cpp')
-rw-r--r-- | src/mame/video/gberet.cpp | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/src/mame/video/gberet.cpp b/src/mame/video/gberet.cpp deleted file mode 100644 index 3e09c4626d5..00000000000 --- a/src/mame/video/gberet.cpp +++ /dev/null @@ -1,213 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Nicola Salmoria -#include "emu.h" -#include "includes/gberet.h" - - -/*************************************************************************** - - Convert the color PROMs into a more useable format. - - Green Beret has a 32 bytes palette PROM and two 256 bytes color lookup table - PROMs (one for sprites, one for characters). - The palette PROM is connected to the RGB output, this way: - - bit 7 -- 220 ohm resistor -- BLUE - -- 470 ohm resistor -- BLUE - -- 220 ohm resistor -- GREEN - -- 470 ohm resistor -- GREEN - -- 1 kohm resistor -- GREEN - -- 220 ohm resistor -- RED - -- 470 ohm resistor -- RED - bit 0 -- 1 kohm resistor -- RED - -***************************************************************************/ - -void gberet_state::gberet_palette(palette_device &palette) const -{ - uint8_t const *color_prom = memregion("proms")->base(); - - // create a lookup table for the palette - for (int i = 0; i < 0x20; i++) - { - int bit0, bit1, bit2; - - // red component - bit0 = BIT(color_prom[i], 0); - bit1 = BIT(color_prom[i], 1); - bit2 = BIT(color_prom[i], 2); - int const r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; - - // green component - bit0 = BIT(color_prom[i], 3); - bit1 = BIT(color_prom[i], 4); - bit2 = BIT(color_prom[i], 5); - int const g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; - - // blue component - bit0 = 0; - bit1 = BIT(color_prom[i], 6); - bit2 = BIT(color_prom[i], 7); - int const b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2; - - palette.set_indirect_color(i, rgb_t(r, g, b)); - } - - // color_prom now points to the beginning of the lookup table - color_prom += 0x20; - - for (int i = 0; i < 0x100; i++) - { - uint8_t const ctabentry = (color_prom[i] & 0x0f) | 0x10; - palette.set_pen_indirect(i, ctabentry); - } - - for (int i = 0x100; i < 0x200; i++) - { - uint8_t const ctabentry = color_prom[i] & 0x0f; - palette.set_pen_indirect(i, ctabentry); - } -} - -void gberet_state::gberet_videoram_w(offs_t offset, uint8_t data) -{ - m_videoram[offset] = data; - m_bg_tilemap->mark_tile_dirty(offset); -} - -void gberet_state::gberet_colorram_w(offs_t offset, uint8_t data) -{ - m_colorram[offset] = data; - m_bg_tilemap->mark_tile_dirty(offset); -} - -void gberet_state::gberet_scroll_w(offs_t offset, uint8_t data) -{ - int scroll; - - m_scrollram[offset] = data; - - scroll = m_scrollram[offset & 0x1f] | (m_scrollram[offset | 0x20] << 8); - m_bg_tilemap->set_scrollx(offset & 0x1f, scroll); -} - -void gberet_state::gberet_sprite_bank_w(uint8_t data) -{ - m_spritebank = data; -} - -TILE_GET_INFO_MEMBER(gberet_state::get_bg_tile_info) -{ - int attr = m_colorram[tile_index]; - int code = m_videoram[tile_index] + ((attr & 0x40) << 2); - int color = attr & 0x0f; - int flags = TILE_FLIPYX((attr & 0x30) >> 4); - - tileinfo.group = color; - tileinfo.category = (attr & 0x80) >> 7; - - tileinfo.set(0, code, color, flags); -} - -void gberet_state::video_start() -{ - m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(gberet_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8, 8, 64, 32); - m_bg_tilemap->configure_groups(*m_gfxdecode->gfx(0), 0x10); - m_bg_tilemap->set_scroll_rows(32); -} - -void gberet_state::gberet_draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect ) -{ - int offs; - uint8_t *sr; - - if (m_spritebank & 0x08) - sr = m_spriteram2; - else - sr = m_spriteram; - - for (offs = 0; offs < 0xc0; offs += 4) - { - if (sr[offs + 3]) - { - int attr = sr[offs + 1]; - int code = sr[offs + 0] + ((attr & 0x40) << 2); - int color = attr & 0x0f; - int sx = sr[offs + 2] - 2 * (attr & 0x80); - int sy = sr[offs + 3]; - int flipx = attr & 0x10; - int flipy = attr & 0x20; - - if (flip_screen()) - { - sx = 240 - sx; - sy = 240 - sy; - flipx = !flipx; - flipy = !flipy; - } - - m_gfxdecode->gfx(1)->transmask(bitmap,cliprect, code, color, flipx, flipy, sx, sy, - m_palette->transpen_mask(*m_gfxdecode->gfx(1), color, 0)); - } - } -} - -uint32_t gberet_state::screen_update_gberet(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE | TILEMAP_DRAW_ALL_CATEGORIES, 0); - gberet_draw_sprites(bitmap, cliprect); - m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); - return 0; -} - -/* Green Beret (bootleg) */ - -void gberet_state::gberetb_scroll_w(offs_t offset, uint8_t data) -{ - int scroll = data; - - if (offset) - scroll |= 0x100; - - for (offset = 6; offset < 29; offset++) - m_bg_tilemap->set_scrollx(offset, scroll + 64 - 8); -} - -void gberet_state::gberetb_draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect ) -{ - uint8_t *spriteram = m_spriteram; - int offs; - - for (offs = m_spriteram.bytes() - 4; offs >= 0; offs -= 4) - { - if (spriteram[offs + 1]) - { - int attr = spriteram[offs + 3]; - int code = spriteram[offs] + ((attr & 0x40) << 2); - int color = attr & 0x0f; - int sx = spriteram[offs + 2] - 2 * (attr & 0x80); - int sy = 240 - spriteram[offs + 1]; - int flipx = attr & 0x10; - int flipy = attr & 0x20; - - if (flip_screen()) - { - sx = 240 - sx; - sy = 240 - sy; - flipx = !flipx; - flipy = !flipy; - } - - m_gfxdecode->gfx(1)->transmask(bitmap,cliprect, code, color, flipx, flipy, sx, sy, - m_palette->transpen_mask(*m_gfxdecode->gfx(1), color, 0)); - } - } -} - -uint32_t gberet_state::screen_update_gberetb(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE | TILEMAP_DRAW_ALL_CATEGORIES, 0); - gberetb_draw_sprites(bitmap, cliprect); - m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); - return 0; -} |