mirror of
https://github.com/holub/mame
synced 2025-05-28 08:33:05 +03:00
State-ized snes_vram too
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cc2e0e6687
commit
ca3b87c537
@ -527,8 +527,11 @@ public:
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DECLARE_WRITE8_MEMBER( snes_oam_write );
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DECLARE_READ8_MEMBER( snes_cgram_read );
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DECLARE_WRITE8_MEMBER( snes_cgram_write );
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DECLARE_READ8_MEMBER( snes_vram_read );
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DECLARE_WRITE8_MEMBER( snes_vram_write );
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UINT16 *m_snes_oam; /* Object Attribute Memory */
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UINT16 *m_snes_cgram; /* Character Graphics RAM */
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UINT16 *m_snes_cgram; /* Palette RAM */
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UINT8 *m_snes_vram; /* Video RAM (TODO: Should be 16-bit, but it's easier this way) */
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};
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@ -130,8 +130,6 @@ enum
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SNES_COLOR_DEPTH_8BPP
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};
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static UINT8 *snes_vram; /* Video RAM (Should be 16-bit, but it's easier this way) */
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/*****************************************
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* snes_get_bgcolor()
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*
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@ -313,8 +311,8 @@ inline void snes_state::snes_draw_tile( UINT8 planes, UINT8 layer, UINT32 tilead
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for (ii = 0; ii < planes / 2; ii++)
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{
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plane[2 * ii + 0] = snes_vram[(tileaddr + 16 * ii + 0) % SNES_VRAM_SIZE];
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plane[2 * ii + 1] = snes_vram[(tileaddr + 16 * ii + 1) % SNES_VRAM_SIZE];
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plane[2 * ii + 0] = m_snes_vram[(tileaddr + 16 * ii + 0) % SNES_VRAM_SIZE];
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plane[2 * ii + 1] = m_snes_vram[(tileaddr + 16 * ii + 1) % SNES_VRAM_SIZE];
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}
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for (ii = x; ii < (x + 8); ii++)
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@ -371,7 +369,7 @@ inline void snes_state::snes_draw_tile( UINT8 planes, UINT8 layer, UINT32 tilead
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* BG drawing theory of each scanline is quite easy: depending on the graphics Mode (0-7), there
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* are up to 4 background layers. Pixels for each BG layer can have two different priorities.
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* Depending on the line and on the BGHOFS and BGVOFS PPU registers, we first determine the tile
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* address in snes_vram (by determining x,y coord and tile size and by calling snes_get_tmap_addr).
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* address in m_snes_vram (by determining x,y coord and tile size and by calling snes_get_tmap_addr).
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* Then, we load the correspondent data and we determine the tile properties: which priority to
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* use, which palette etc. Finally, for each pixel of the tile appearing on screen, we check if
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* the tile priority is higher than the BG/OAM already stored in that pixel for that line. If so
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@ -478,8 +476,8 @@ inline void snes_state::snes_update_line( UINT16 curline, UINT8 layer, UINT8 pri
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case SNES_OPT_MODE6:
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haddr = snes_get_tmap_addr(SNES_BG3, snes_ppu.layer[SNES_BG3].tile_size, snes_ppu.layer[SNES_BG3].tilemap << 9, (opt_x - 8) + ((snes_ppu.layer[SNES_BG3].hoffs & 0x3ff) & ~7), (snes_ppu.layer[SNES_BG3].voffs & 0x3ff));
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vaddr = snes_get_tmap_addr(SNES_BG3, snes_ppu.layer[SNES_BG3].tile_size, snes_ppu.layer[SNES_BG3].tilemap << 9, (opt_x - 8) + ((snes_ppu.layer[SNES_BG3].hoffs & 0x3ff) & ~7), (snes_ppu.layer[SNES_BG3].voffs & 0x3ff) + 8);
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hval = snes_vram[haddr % SNES_VRAM_SIZE] | (snes_vram[(haddr + 1) % SNES_VRAM_SIZE] << 8);
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vval = snes_vram[vaddr % SNES_VRAM_SIZE] | (snes_vram[(vaddr + 1) % SNES_VRAM_SIZE] << 8);
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hval = m_snes_vram[haddr % SNES_VRAM_SIZE] | (m_snes_vram[(haddr + 1) % SNES_VRAM_SIZE] << 8);
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vval = m_snes_vram[vaddr % SNES_VRAM_SIZE] | (m_snes_vram[(vaddr + 1) % SNES_VRAM_SIZE] << 8);
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if (BIT(hval, opt_bit))
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xpos = opt_x + (hval & ~7);
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if (BIT(vval, opt_bit))
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@ -487,7 +485,7 @@ inline void snes_state::snes_update_line( UINT16 curline, UINT8 layer, UINT8 pri
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break;
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case SNES_OPT_MODE4:
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haddr = snes_get_tmap_addr(SNES_BG3, snes_ppu.layer[SNES_BG3].tile_size, snes_ppu.layer[SNES_BG3].tilemap << 9, (opt_x - 8) + ((snes_ppu.layer[SNES_BG3].hoffs & 0x3ff) & ~7), (snes_ppu.layer[SNES_BG3].voffs & 0x3ff));
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hval = snes_vram[haddr % SNES_VRAM_SIZE] | (snes_vram[(haddr + 1) % SNES_VRAM_SIZE] << 8);
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hval = m_snes_vram[haddr % SNES_VRAM_SIZE] | (m_snes_vram[(haddr + 1) % SNES_VRAM_SIZE] << 8);
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if (BIT(hval, opt_bit))
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{
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if (!BIT(hval, 15))
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@ -511,7 +509,7 @@ inline void snes_state::snes_update_line( UINT16 curline, UINT8 layer, UINT8 pri
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ppp = Tile palette. The number of entries in the palette depends on the Mode and the BG.
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cccccccccc = Tile number.
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*/
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tilemap = snes_vram[addr % SNES_VRAM_SIZE] | (snes_vram[(addr + 1) % SNES_VRAM_SIZE] << 8);
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tilemap = m_snes_vram[addr % SNES_VRAM_SIZE] | (m_snes_vram[(addr + 1) % SNES_VRAM_SIZE] << 8);
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vflip = BIT(tilemap, 15);
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hflip = BIT(tilemap, 14);
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priority = BIT(tilemap, 13) ? priority_a : priority_b;
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@ -693,25 +691,25 @@ void snes_state::snes_update_line_mode7( UINT16 curline, UINT8 layer, UINT8 prio
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case 0x01: /* Repeat if outside screen area */
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tx &= 0x3ff;
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ty &= 0x3ff;
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tiled = snes_vram[((((tx >> 3) & 0x7f) + (((ty >> 3) & 0x7f) * 128)) * 2) % SNES_VRAM_SIZE] << 7;
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colour = snes_vram[(tiled + ((tx & 0x07) * 2) + ((ty & 0x07) * 16) + 1) % SNES_VRAM_SIZE];
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tiled = m_snes_vram[((((tx >> 3) & 0x7f) + (((ty >> 3) & 0x7f) * 128)) * 2) % SNES_VRAM_SIZE] << 7;
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colour = m_snes_vram[(tiled + ((tx & 0x07) * 2) + ((ty & 0x07) * 16) + 1) % SNES_VRAM_SIZE];
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break;
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case 0x02: /* Single colour backdrop screen if outside screen area */
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if ((tx >= 0) && (tx < 1024) && (ty >= 0) && (ty < 1024))
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{
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tiled = snes_vram[((((tx >> 3) & 0x7f) + (((ty >> 3) & 0x7f) * 128)) * 2) % SNES_VRAM_SIZE] << 7;
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colour = snes_vram[(tiled + ((tx & 0x07) * 2) + ((ty & 0x07) * 16) + 1) % SNES_VRAM_SIZE];
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tiled = m_snes_vram[((((tx >> 3) & 0x7f) + (((ty >> 3) & 0x7f) * 128)) * 2) % SNES_VRAM_SIZE] << 7;
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colour = m_snes_vram[(tiled + ((tx & 0x07) * 2) + ((ty & 0x07) * 16) + 1) % SNES_VRAM_SIZE];
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}
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else
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colour = 0;
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break;
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case 0x03: /* Character 0x00 repeat if outside screen area */
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if ((tx >= 0) && (tx < 1024) && (ty >= 0) && (ty < 1024))
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tiled = snes_vram[((((tx >> 3) & 0x7f) + (((ty >> 3) & 0x7f) * 128)) * 2) % SNES_VRAM_SIZE] << 7;
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tiled = m_snes_vram[((((tx >> 3) & 0x7f) + (((ty >> 3) & 0x7f) * 128)) * 2) % SNES_VRAM_SIZE] << 7;
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else
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tiled = 0;
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colour = snes_vram[(tiled + ((tx & 0x07) * 2) + ((ty & 0x07) * 16) + 1) % SNES_VRAM_SIZE];
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colour = m_snes_vram[(tiled + ((tx & 0x07) * 2) + ((ty & 0x07) * 16) + 1) % SNES_VRAM_SIZE];
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break;
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}
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@ -1663,7 +1661,7 @@ VIDEO_START( snes )
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memset(&debug_options, 0, sizeof(debug_options));
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#endif
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snes_vram = auto_alloc_array(machine, UINT8, SNES_VRAM_SIZE);
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state->m_snes_vram = auto_alloc_array(machine, UINT8, SNES_VRAM_SIZE);
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state->m_snes_cgram = auto_alloc_array(machine, UINT16, SNES_CGRAM_SIZE/2);
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state->m_snes_oam = auto_alloc_array(machine, UINT16, SNES_OAM_SIZE/2);
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@ -1686,13 +1684,13 @@ VIDEO_START( snes )
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}
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/* Init VRAM */
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memset(snes_vram, 0, SNES_VRAM_SIZE);
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memset(state->m_snes_vram, 0, SNES_VRAM_SIZE);
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/* Init Character Graphics RAM */
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/* Init Palette RAM */
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memset((UINT8 *)state->m_snes_cgram, 0, SNES_CGRAM_SIZE);
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/* Init oam RAM */
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memset(state->m_snes_oam, 0xff, SNES_OAM_SIZE);
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memset((UINT8 *)state->m_snes_oam, 0xff, SNES_OAM_SIZE);
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for (i = 0; i < 6; i++)
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{
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@ -1782,7 +1780,7 @@ VIDEO_START( snes )
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state_save_register_global(machine, snes_ppu.color_modes);
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state_save_register_global(machine, snes_ppu.stat77_flags);
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state_save_register_global_pointer(machine, snes_vram, SNES_VRAM_SIZE);
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state_save_register_global_pointer(machine, state->m_snes_vram, SNES_VRAM_SIZE);
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state_save_register_global_pointer(machine, state->m_snes_cgram, SNES_CGRAM_SIZE/2);
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state_save_register_global_pointer(machine, state->m_snes_oam, SNES_OAM_SIZE/2);
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}
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@ -1881,17 +1879,17 @@ inline UINT32 snes_get_vram_address( running_machine &machine )
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return addr;
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}
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static READ8_HANDLER( snes_vram_read )
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READ8_MEMBER( snes_state::snes_vram_read )
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{
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UINT8 res = 0;
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offset &= 0x1ffff;
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if (snes_ppu.screen_disabled)
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res = snes_vram[offset];
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res = m_snes_vram[offset];
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else
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{
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UINT16 v = space->machine().primary_screen->vpos();
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UINT16 h = space->machine().primary_screen->hpos();
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UINT16 v = machine().primary_screen->vpos();
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UINT16 h = machine().primary_screen->hpos();
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UINT16 ls = (((snes_ram[STAT78] & 0x10) == SNES_NTSC ? 525 : 625) >> 1) - 1;
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if (snes_ppu.interlace == 2)
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@ -1904,32 +1902,32 @@ static READ8_HANDLER( snes_vram_read )
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else if (v == snes_ppu.beam.last_visible_line - 1)
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{
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if (h == 1362)
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res = snes_vram[offset];
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res = m_snes_vram[offset];
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else
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res = 0;
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}
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else
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res = snes_vram[offset];
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res = m_snes_vram[offset];
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}
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return res;
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}
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static WRITE8_HANDLER( snes_vram_write )
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WRITE8_MEMBER( snes_state::snes_vram_write )
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{
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offset &= 0x1ffff;
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if (snes_ppu.screen_disabled)
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snes_vram[offset] = data;
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m_snes_vram[offset] = data;
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else
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{
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UINT16 v = space->machine().primary_screen->vpos();
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UINT16 h = space->machine().primary_screen->hpos();
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UINT16 v = machine().primary_screen->vpos();
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UINT16 h = machine().primary_screen->hpos();
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if (v == 0)
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{
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if (h <= 4)
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snes_vram[offset] = data;
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m_snes_vram[offset] = data;
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else if (h == 6)
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snes_vram[offset] = snes_open_bus_r(space, 0);
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m_snes_vram[offset] = snes_open_bus_r(&space, 0);
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else
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{
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//no write
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@ -1946,10 +1944,10 @@ static WRITE8_HANDLER( snes_vram_write )
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//no write
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}
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else
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snes_vram[offset] = data;
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m_snes_vram[offset] = data;
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}
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else
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snes_vram[offset] = data;
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m_snes_vram[offset] = data;
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}
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}
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@ -2156,8 +2154,8 @@ READ8_HANDLER( snes_ppu_read )
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if (!state->m_vram_fgr_high)
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{
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state->m_vram_read_buffer = snes_vram_read(space, addr);
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state->m_vram_read_buffer |= (snes_vram_read(space, addr + 1) << 8);
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state->m_vram_read_buffer = state->snes_vram_read(*space, addr);
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state->m_vram_read_buffer |= (state->snes_vram_read(*space, addr + 1) << 8);
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state->m_vmadd = (state->m_vmadd + state->m_vram_fgr_increment) & 0xffff;
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}
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@ -2171,8 +2169,8 @@ READ8_HANDLER( snes_ppu_read )
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if (state->m_vram_fgr_high)
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{
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state->m_vram_read_buffer = snes_vram_read(space, addr);
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state->m_vram_read_buffer |= (snes_vram_read(space, addr + 1) << 8);
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state->m_vram_read_buffer = state->snes_vram_read(*space, addr);
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state->m_vram_read_buffer |= (state->snes_vram_read(*space, addr + 1) << 8);
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state->m_vmadd = (state->m_vmadd + state->m_vram_fgr_increment) & 0xffff;
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}
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@ -2402,8 +2400,8 @@ WRITE8_HANDLER( snes_ppu_write )
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UINT32 addr;
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state->m_vmadd = (state->m_vmadd & 0xff00) | (data << 0);
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addr = snes_get_vram_address(space->machine()) << 1;
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state->m_vram_read_buffer = snes_vram_read(space, addr);
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state->m_vram_read_buffer |= (snes_vram_read(space, addr + 1) << 8);
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state->m_vram_read_buffer = state->snes_vram_read(*space, addr);
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state->m_vram_read_buffer |= (state->snes_vram_read(*space, addr + 1) << 8);
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}
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break;
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case VMADDH: /* Address for VRAM read/write (high) */
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@ -2411,14 +2409,14 @@ WRITE8_HANDLER( snes_ppu_write )
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UINT32 addr;
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state->m_vmadd = (state->m_vmadd & 0x00ff) | (data << 8);
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addr = snes_get_vram_address(space->machine()) << 1;
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state->m_vram_read_buffer = snes_vram_read(space, addr);
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state->m_vram_read_buffer |= (snes_vram_read(space, addr + 1) << 8);
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state->m_vram_read_buffer = state->snes_vram_read(*space, addr);
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state->m_vram_read_buffer |= (state->snes_vram_read(*space, addr + 1) << 8);
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}
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break;
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case VMDATAL: /* 2118: Data for VRAM write (low) */
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{
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UINT32 addr = snes_get_vram_address(space->machine()) << 1;
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snes_vram_write(space, addr, data);
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state->snes_vram_write(*space, addr, data);
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if (!state->m_vram_fgr_high)
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state->m_vmadd = (state->m_vmadd + state->m_vram_fgr_increment) & 0xffff;
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@ -2427,7 +2425,7 @@ WRITE8_HANDLER( snes_ppu_write )
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case VMDATAH: /* 2119: Data for VRAM write (high) */
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{
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UINT32 addr = snes_get_vram_address(space->machine()) << 1;
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snes_vram_write(space, addr + 1, data);
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state->snes_vram_write(*space, addr + 1, data);
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if (state->m_vram_fgr_high)
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state->m_vmadd = (state->m_vmadd + state->m_vram_fgr_increment) & 0xffff;
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