#include "emu.h" #include "video/resnet.h" #include "includes/kingobox.h" /*************************************************************************** Convert the color PROMs into a more useable format. King of Boxer has three 256x4 palette PROMs, connected to the RGB output this way: bit 3 -- 180 ohm resistor -- RED/GREEN/BLUE -- 360 ohm resistor -- RED/GREEN/BLUE -- 750 ohm resistor -- RED/GREEN/BLUE bit 0 -- 1.5kohm resistor -- RED/GREEN/BLUE The foreground color code directly goes to the RGB output, this way: bit 5 -- 51 ohm resistor -- RED bit 4 -- 51 ohm resistor -- GREEN bit 3 -- 51 ohm resistor -- BLUE ***************************************************************************/ static void palette_init_common( running_machine &machine, const UINT8 *color_prom, void (*get_rgb_data)(const UINT8 *, int, int *, int *, int *) ) { static const int resistances[4] = { 1500, 750, 360, 180 }; static const int resistances_fg[1] = { 51 }; double rweights[4], gweights[4], bweights[4]; double rweights_fg[1], gweights_fg[1], bweights_fg[1]; int i; /* compute the color output resistor weights */ double scale = compute_resistor_weights(0, 255, -1.0, 1, resistances_fg, rweights_fg, 0, 0, 1, resistances_fg, gweights_fg, 0, 0, 1, resistances_fg, bweights_fg, 0, 0); compute_resistor_weights(0, 255, scale, 4, resistances, rweights, 470, 0, 4, resistances, gweights, 470, 0, 4, resistances, bweights, 470, 0); /* allocate the colortable */ machine.colortable = colortable_alloc(machine, 0x108); for (i = 0; i < 0x100; i++) { int r_data, g_data, b_data; int bit0, bit1, bit2, bit3; int r, g, b; get_rgb_data(color_prom, i, &r_data, &g_data, &b_data); /* red component */ bit0 = (r_data >> 0) & 0x01; bit1 = (r_data >> 1) & 0x01; bit2 = (r_data >> 2) & 0x01; bit3 = (r_data >> 3) & 0x01; r = combine_4_weights(rweights, bit0, bit1, bit2, bit3); /* green component */ bit0 = (g_data >> 0) & 0x01; bit1 = (g_data >> 1) & 0x01; bit2 = (g_data >> 2) & 0x01; bit3 = (g_data >> 3) & 0x01; g = combine_4_weights(gweights, bit0, bit1, bit2, bit3); /* blue component */ bit0 = (b_data >> 0) & 0x01; bit1 = (b_data >> 1) & 0x01; bit2 = (b_data >> 2) & 0x01; bit3 = (b_data >> 3) & 0x01; b = combine_4_weights(bweights, bit0, bit1, bit2, bit3); colortable_palette_set_color(machine.colortable, i, MAKE_RGB(r, g, b)); } /* the foreground chars directly map to primary colors */ for (i = 0x100; i < 0x108; i++) { int r, g, b; /* red component */ r = (((i - 0x100) >> 2) & 0x01) * rweights_fg[0]; /* green component */ g = (((i - 0x100) >> 1) & 0x01) * gweights_fg[0]; /* blue component */ b = (((i - 0x100) >> 0) & 0x01) * bweights_fg[0]; colortable_palette_set_color(machine.colortable, i, MAKE_RGB(r, g, b)); } for (i = 0; i < 0x100; i++) colortable_entry_set_value(machine.colortable, i, i); for (i = 0x101; i < 0x110; i += 2) { UINT16 ctabentry = ((i - 0x101) >> 1) | 0x100; colortable_entry_set_value(machine.colortable, i, ctabentry); } } static void kingofb_get_rgb_data( const UINT8 *color_prom, int i, int *r_data, int *g_data, int *b_data ) { *r_data = color_prom[i + 0x000] & 0x0f; *g_data = color_prom[i + 0x100] & 0x0f; *b_data = color_prom[i + 0x200] & 0x0f; } static void ringking_get_rgb_data( const UINT8 *color_prom, int i, int *r_data, int *g_data, int *b_data ) { *r_data = (color_prom[i + 0x000] >> 4) & 0x0f; *g_data = (color_prom[i + 0x000] >> 0) & 0x0f; *b_data = (color_prom[i + 0x100] >> 0) & 0x0f; } PALETTE_INIT( kingofb ) { palette_init_common(machine, color_prom, kingofb_get_rgb_data); } PALETTE_INIT( ringking ) { palette_init_common(machine, color_prom, ringking_get_rgb_data); } WRITE8_HANDLER( kingofb_videoram_w ) { kingofb_state *state = space->machine().driver_data(); state->m_videoram[offset] = data; tilemap_mark_tile_dirty(state->m_bg_tilemap, offset); } WRITE8_HANDLER( kingofb_colorram_w ) { kingofb_state *state = space->machine().driver_data(); state->m_colorram[offset] = data; tilemap_mark_tile_dirty(state->m_bg_tilemap, offset); } WRITE8_HANDLER( kingofb_videoram2_w ) { kingofb_state *state = space->machine().driver_data(); state->m_videoram2[offset] = data; tilemap_mark_tile_dirty(state->m_fg_tilemap, offset); } WRITE8_HANDLER( kingofb_colorram2_w ) { kingofb_state *state = space->machine().driver_data(); state->m_colorram2[offset] = data; tilemap_mark_tile_dirty(state->m_fg_tilemap, offset); } WRITE8_HANDLER( kingofb_f800_w ) { kingofb_state *state = space->machine().driver_data(); state->m_nmi_enable = data & 0x20; if (state->m_palette_bank != ((data & 0x18) >> 3)) { state->m_palette_bank = (data & 0x18) >> 3; tilemap_mark_all_tiles_dirty(state->m_bg_tilemap); } if (flip_screen_get(space->machine()) != (data & 0x80)) { flip_screen_set(space->machine(), data & 0x80); tilemap_mark_all_tiles_dirty_all(space->machine()); } } static TILE_GET_INFO( get_bg_tile_info ) { kingofb_state *state = machine.driver_data(); int attr = state->m_colorram[tile_index]; int bank = ((attr & 0x04) >> 2) + 2; int code = (tile_index / 16) ? state->m_videoram[tile_index] + ((attr & 0x03) << 8) : 0; int color = ((attr & 0x70) >> 4) + 8 * state->m_palette_bank; SET_TILE_INFO(bank, code, color, 0); } static TILE_GET_INFO( get_fg_tile_info ) { kingofb_state *state = machine.driver_data(); int attr = state->m_colorram2[tile_index]; int bank = (attr & 0x02) >> 1; int code = state->m_videoram2[tile_index] + ((attr & 0x01) << 8); int color = (attr & 0x38) >> 3; SET_TILE_INFO(bank, code, color, 0); } VIDEO_START( kingofb ) { kingofb_state *state = machine.driver_data(); state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_cols_flip_y, 16, 16, 16, 16); state->m_fg_tilemap = tilemap_create(machine, get_fg_tile_info, tilemap_scan_cols_flip_y, 8, 8, 32, 32); tilemap_set_transparent_pen(state->m_fg_tilemap, 0); } static void kingofb_draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect) { kingofb_state *state = machine.driver_data(); UINT8 *spriteram = state->m_spriteram; int offs; for (offs = 0; offs < state->m_spriteram_size; offs += 4) { int roffs, bank, code, color, flipx, flipy, sx, sy; /* the offset into spriteram seems scrambled */ roffs = BITSWAP16(offs,15,14,13,12,11,10,4,7,6,5,9,8,3,2,1,0) ^ 0x3c; if (roffs & 0x200) roffs ^= 0x1c0; bank = (spriteram[roffs + 3] & 0x04) >> 2; code = spriteram[roffs + 2] + ((spriteram[roffs + 3] & 0x03) << 8); color = ((spriteram[roffs + 3] & 0x70) >> 4) + 8 * state->m_palette_bank; flipx = 0; flipy = spriteram[roffs + 3] & 0x80; sx = spriteram[roffs + 1]; sy = spriteram[roffs]; if (flip_screen_get(machine)) { sx = 240 - sx; sy = 240 - sy; flipx = !flipx; flipy = !flipy; } drawgfx_transpen(bitmap, cliprect, machine.gfx[2 + bank], code, color, flipx, flipy, sx, sy, 0); } } SCREEN_UPDATE( kingofb ) { kingofb_state *state = screen->machine().driver_data(); tilemap_set_scrolly(state->m_bg_tilemap, 0, -(*state->m_scroll_y)); tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); kingofb_draw_sprites(screen->machine(), bitmap, cliprect); tilemap_draw(bitmap, cliprect, state->m_fg_tilemap, 0, 0); return 0; } /* Ring King */ static TILE_GET_INFO( ringking_get_bg_tile_info ) { kingofb_state *state = machine.driver_data(); int code = (tile_index / 16) ? state->m_videoram[tile_index] : 0; int color = ((state->m_colorram[tile_index] & 0x70) >> 4) + 8 * state->m_palette_bank; SET_TILE_INFO(4, code, color, 0); } VIDEO_START( ringking ) { kingofb_state *state = machine.driver_data(); state->m_bg_tilemap = tilemap_create(machine, ringking_get_bg_tile_info, tilemap_scan_cols_flip_y, 16, 16, 16, 16); state->m_fg_tilemap = tilemap_create(machine, get_fg_tile_info, tilemap_scan_cols_flip_y, 8, 8, 32, 32); tilemap_set_transparent_pen(state->m_fg_tilemap, 0); } static void ringking_draw_sprites( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect ) { kingofb_state *state = machine.driver_data(); UINT8 *spriteram = state->m_spriteram; int offs; for (offs = 0; offs < state->m_spriteram_size; offs += 4) { int bank = (spriteram[offs + 1] & 0x04) >> 2; int code = spriteram[offs + 3] + ((spriteram[offs + 1] & 0x03) << 8); int color = ((spriteram[offs + 1] & 0x70) >> 4) + 8 * state->m_palette_bank; int flipx = 0; int flipy = (spriteram[offs + 1] & 0x80) ? 0 : 1; int sx = spriteram[offs + 2]; int sy = spriteram[offs]; if (flip_screen_get(machine)) { sx = 240 - sx; sy = 240 - sy; flipx = !flipx; flipy = !flipy; } drawgfx_transpen(bitmap, cliprect, machine.gfx[2 + bank], code, color, flipx, flipy, sx, sy, 0); } } SCREEN_UPDATE( ringking ) { kingofb_state *state = screen->machine().driver_data(); tilemap_set_scrolly(state->m_bg_tilemap, 0, -(*state->m_scroll_y)); tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); ringking_draw_sprites(screen->machine(), bitmap, cliprect); tilemap_draw(bitmap, cliprect, state->m_fg_tilemap, 0, 0); return 0; }