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-rw-r--r--src/mame/video/circusc.cpp211
1 files changed, 0 insertions, 211 deletions
diff --git a/src/mame/video/circusc.cpp b/src/mame/video/circusc.cpp
deleted file mode 100644
index fa50b26a0a8..00000000000
--- a/src/mame/video/circusc.cpp
+++ /dev/null
@@ -1,211 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:Nicola Salmoria,Chris Hardy
-/***************************************************************************
-
- video.c
-
- Functions to emulate the video hardware of the machine.
-
-***************************************************************************/
-
-#include "emu.h"
-#include "video/resnet.h"
-#include "includes/circusc.h"
-
-
-/***************************************************************************
-
- Convert the color PROMs into a more useable format.
-
- Circus Charlie has one 32x8 palette PROM and two 256x4 lookup table PROMs
- (one for characters, one for sprites).
- 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 circusc_state::circusc_palette(palette_device &palette) const
-{
- const uint8_t *color_prom = memregion("proms")->base();
- static constexpr int resistances_rg[3] = { 1000, 470, 220 };
- static constexpr int resistances_b [2] = { 470, 220 };
-
- // compute the color output resistor weights
- double rweights[3], gweights[3], bweights[2];
- compute_resistor_weights(0, 255, -1.0,
- 3, &resistances_rg[0], rweights, 0, 0,
- 3, &resistances_rg[0], gweights, 0, 0,
- 2, &resistances_b[0], bweights, 0, 0);
-
- // 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 = combine_weights(rweights, bit0, bit1, bit2);
-
- // green component
- bit0 = BIT(color_prom[i], 3);
- bit1 = BIT(color_prom[i], 4);
- bit2 = BIT(color_prom[i], 5);
- int const g = combine_weights(gweights, bit0, bit1, bit2);
-
- // blue component
- bit0 = BIT(color_prom[i], 6);
- bit1 = BIT(color_prom[i], 7);
- int const b = combine_weights(bweights, bit0, bit1);
-
- palette.set_indirect_color(i, rgb_t(r, g, b));
- }
-
- // color_prom now points to the beginning of the lookup table
- color_prom += 32;
-
- // characters map to the upper 16 palette entries
- for (int i = 0; i < 0x100; i++)
- {
- uint8_t const ctabentry = color_prom[i] & 0x0f;
- palette.set_pen_indirect(i, ctabentry + 0x10);
- }
-
- // sprites map to the lower 16 palette entries
- for (int i = 0x100; i < 0x200; i++)
- {
- uint8_t const ctabentry = color_prom[i] & 0x0f;
- palette.set_pen_indirect(i, ctabentry);
- }
-}
-
-
-
-/***************************************************************************
-
- Callbacks for the TileMap code
-
-***************************************************************************/
-
-TILE_GET_INFO_MEMBER(circusc_state::get_tile_info)
-{
- uint8_t const attr = m_colorram[tile_index];
- tileinfo.category = BIT(attr, 4);
-
- SET_TILE_INFO_MEMBER(
- 0,
- m_videoram[tile_index] + ((attr & 0x20) << 3),
- attr & 0x0f,
- TILE_FLIPYX((attr & 0xc0) >> 6));
-}
-
-
-
-/***************************************************************************
-
- Start the video hardware emulation.
-
-***************************************************************************/
-
-void circusc_state::video_start()
-{
- m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(circusc_state::get_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
-
- m_bg_tilemap->set_scroll_cols(32);
-
- save_item(NAME(m_spritebank));
-}
-
-
-
-/***************************************************************************
-
- Memory handlers
-
-***************************************************************************/
-
-WRITE8_MEMBER(circusc_state::circusc_videoram_w)
-{
- m_videoram[offset] = data;
- m_bg_tilemap->mark_tile_dirty(offset);
-}
-
-WRITE8_MEMBER(circusc_state::circusc_colorram_w)
-{
- m_colorram[offset] = data;
- m_bg_tilemap->mark_tile_dirty(offset);
-}
-
-WRITE_LINE_MEMBER(circusc_state::flipscreen_w)
-{
- flip_screen_set(state);
-}
-
-WRITE_LINE_MEMBER(circusc_state::spritebank_w)
-{
- m_spritebank = state;
-}
-
-
-
-/***************************************************************************
-
- Display refresh
-
-***************************************************************************/
-
-void circusc_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect )
-{
- int offs;
- uint8_t *sr = m_spritebank ? m_spriteram : m_spriteram_2;
-
- for (offs = 0; offs < m_spriteram.bytes(); offs += 4)
- {
- int code = sr[offs + 0] + 8 * (sr[offs + 1] & 0x20);
- int color = sr[offs + 1] & 0x0f;
- int sx = sr[offs + 2];
- int sy = sr[offs + 3];
- int flipx = sr[offs + 1] & 0x40;
- int flipy = sr[offs + 1] & 0x80;
-
- 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 circusc_state::screen_update_circusc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
-{
- int i;
-
- for (i = 0; i < 10; i++)
- m_bg_tilemap->set_scrolly(i, 0);
- for (i = 10; i < 32; i++)
- m_bg_tilemap->set_scrolly(i, *m_scroll);
-
- bitmap.fill(0, cliprect);
- m_bg_tilemap->draw(screen, bitmap, cliprect, 1, 0);
- draw_sprites(bitmap, cliprect);
- m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
- return 0;
-}