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https://github.com/holub/mame
synced 2025-07-06 10:29:38 +03:00
315_5313.cpp : Allow LCM scaling of horizontal resolution
megaplay.cpp : Use LCM of support horizontal resolution in both VDPs 315_5124.cpp : Allow dividing hcounter related to using LCM
This commit is contained in:
cam900
parent
da07c8901b
commit
c1459feacc
@ -204,6 +204,7 @@ sega315_5124_device::sega315_5124_device(const machine_config &mconfig, device_t
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, device_memory_interface(mconfig, *this)
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, device_video_interface(mconfig, *this)
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, device_mixer_interface(mconfig, *this, 2)
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, m_hcounter_divide(1)
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, m_cram_size(cram_size)
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, m_line_timing(line_timing)
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, m_palette_offset(palette_offset)
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@ -361,7 +362,7 @@ u8 sega315_5124_device::vcount_read()
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const int active_scr_start = m_frame_timing[VERTICAL_SYNC] + m_frame_timing[TOP_BLANKING] + m_frame_timing[TOP_BORDER];
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int vpos = screen().vpos();
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if (screen().hpos() < m_line_timing[VCOUNT_CHANGE_HPOS])
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if (screen_hpos() < m_line_timing[VCOUNT_CHANGE_HPOS])
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{
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vpos--;
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if (vpos < 0)
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@ -382,7 +383,7 @@ u8 sega315_5124_device::hcount_read()
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void sega315_5124_device::hcount_latch()
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{
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/* The hcount value returned by the VDP seems to be based on the previous hpos */
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int hclock = screen().hpos() - 1;
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int hclock = screen_hpos() - 1;
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if (hclock < 0)
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hclock += WIDTH;
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@ -677,7 +678,7 @@ void sega315_5124_device::check_pending_flags()
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return some position in the beginning of next line. To ensure the instruction
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will get updated status, here a maximum hpos is set if the timer reports no
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remaining time, what could also occur due to the ahead time of the timeslice. */
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int const hpos = (m_pending_flags_timer->remaining() == attotime::zero) ? (WIDTH - 1) : screen().hpos();
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int const hpos = (m_pending_flags_timer->remaining() == attotime::zero) ? (WIDTH - 1) : screen_hpos();
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if ((m_pending_hint) && hpos >= m_line_timing[HINT_HPOS])
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{
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@ -853,11 +854,11 @@ void sega315_5124_device::control_write(u8 data)
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break;
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case 1:
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set_display_settings();
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if (screen().hpos() <= DISPLAY_DISABLED_HPOS)
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if (screen_hpos() <= DISPLAY_DISABLED_HPOS)
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m_display_disabled = !BIT(m_reg[0x01], 6);
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break;
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case 8:
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if (screen().hpos() <= m_line_timing[XSCROLL_HPOS])
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if (screen_hpos() <= m_line_timing[XSCROLL_HPOS])
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m_reg8copy = m_reg[0x08];
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}
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@ -1303,7 +1304,7 @@ void sega315_5313_mode4_device::sprite_collision(int line, int sprite_col_x)
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// This function is been used to check for sprite collision of
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// the 315-5313 VDP, that occurs before the active screen is
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// drawn, so it must not flag a collision again when drawing.
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if (screen().hpos() < m_draw_time)
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if (screen_hpos() < m_draw_time)
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{
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m_pending_status |= STATUS_SPRCOL;
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m_pending_sprcol_x = m_line_timing[SPRCOL_BASEHPOS];
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@ -55,6 +55,7 @@ public:
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// construction/destruction
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sega315_5124_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
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void set_hcounter_divide(unsigned divide) { m_hcounter_divide = divide; }
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void set_is_pal(bool is_pal) { m_is_pal = is_pal; }
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auto vblank() { return m_vblank_cb.bind(); }
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@ -102,6 +103,7 @@ protected:
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void sega315_5124(address_map &map);
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virtual int screen_hpos() { return screen().hpos() / ((m_hcounter_divide == 0) ? 1 : m_hcounter_divide); }
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void set_display_settings();
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void set_frame_timing();
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virtual void vblank_end(int vpos);
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@ -130,6 +132,7 @@ protected:
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void draw_scanline_mode0(int *line_buffer, int line);
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void check_pending_flags();
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unsigned m_hcounter_divide;
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u8 m_reg[16]; /* All the registers */
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u8 m_status; /* Status register */
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u8 m_pending_status; /* Pending status flags */
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@ -153,6 +153,12 @@ static constexpr u8 line_315_5313_mode4[8] = {
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, 37 /* SPRCOL_BASEHPOS */
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};
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static const unsigned hres[4] = { 256, 256, 320, 320 };
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static const unsigned hres_mul[4] = { 5, 5, 4, 4 };
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inline u8 sega315_5313_device::get_hres() { return (MEGADRIVE_REG0C_RS0 | (MEGADRIVE_REG0C_RS1 << 1)) & 3; }
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int sega315_5313_device::screen_hpos() { return screen().hpos() / (m_lcm_scaling ? hres_mul[get_hres()] : 1); }
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#define MAX_HPOSITION 480
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@ -184,6 +190,7 @@ sega315_5313_device::sega315_5313_device(const machine_config &mconfig, const ch
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, m_scanline_counter(0)
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, m_vblank_flag(0)
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, m_imode(0)
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, m_lcm_scaling(false)
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, m_visible_scanlines(0)
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, m_irq6_scanline(0)
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, m_z80irq_scanline(0)
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@ -334,9 +341,9 @@ void sega315_5313_device::device_start()
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memset(m_palette_lookup.get(), 0x00, 0x40 * 2);
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if (!m_use_alt_timing)
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m_render_bitmap = std::make_unique<bitmap_rgb32>(320, 512); // allocate maximum sizes we're going to use, it's safer.
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m_render_bitmap = std::make_unique<bitmap_rgb32>(1280, 512); // allocate maximum sizes we're going to use, it's safer.
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else
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m_render_line = std::make_unique<u32[]>(320);
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m_render_line = std::make_unique<u32[]>(1280);
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m_render_line_raw = std::make_unique<u16[]>(320);
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@ -348,7 +355,7 @@ void sega315_5313_device::device_start()
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save_pointer(NAME(m_palette_lookup), 0x40);
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save_pointer(NAME(m_render_line_raw), 320);
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if (m_use_alt_timing)
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save_pointer(NAME(m_render_line), 320);
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save_pointer(NAME(m_render_line), 1280);
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m_irq6_on_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(sega315_5313_device::irq6_on_timer_callback), this));
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m_irq4_on_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(sega315_5313_device::irq4_on_timer_callback), this));
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@ -1234,7 +1241,7 @@ u16 sega315_5313_device::get_hposition()
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}
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else
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{
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value4 = screen().hpos();
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value4 = screen_hpos();
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}
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return value4;
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@ -1378,7 +1385,7 @@ void sega315_5313_device::render_spriteline_to_spritebuffer(int scanline)
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int maxpixels = 0;
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u16 base_address = 0;
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const int screenwidth = MEGADRIVE_REG0C_RS0 | (MEGADRIVE_REG0C_RS1 << 1);
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const int screenwidth = get_hres();
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switch (screenwidth & 3)
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{
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@ -1654,14 +1661,15 @@ void sega315_5313_device::render_videoline_to_videobuffer(int scanline)
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int non_window_lastcol;
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const int screenheight = MEGADRIVE_REG01_240_LINE ? 240 : 224;
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struct nametable_t tile;
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unsigned horz = m_lcm_scaling ? hres[get_hres()] : 320;
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/* Clear our Render Buffer */
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for (int x = 0; x < 320; x++)
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for (int x = 0; x < horz; x++)
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{
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m_video_renderline[x] = MEGADRIVE_REG07_BGCOLOUR | 0x20000; // mark as BG
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}
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memset(m_highpri_renderline.get(), 0, 320);
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memset(m_highpri_renderline.get(), 0, horz);
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/* is this line enabled? */
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if (!MEGADRIVE_REG01_DISP_ENABLE)
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@ -1684,7 +1692,7 @@ void sega315_5313_device::render_videoline_to_videobuffer(int scanline)
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const u16 window_down = MEGADRIVE_REG12_WINDOW_DOWN;
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// const u16 window_vpos = MEGADRIVE_REG12_WINDOW_VPOS;
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const int screenwidth = MEGADRIVE_REG0C_RS0 | (MEGADRIVE_REG0C_RS1 << 1);
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const int screenwidth = get_hres();
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switch (screenwidth)
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{
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@ -1977,7 +1985,7 @@ void sega315_5313_device::render_videoline_to_videobuffer(int scanline)
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/* MEGADRIVE_REG0C_SHADOW_HIGLIGHT */
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/* Low Priority Sprites */
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for (int x = 0; x < 320; x++)
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for (int x = 0; x < horz; x++)
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{
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if (!MEGADRIVE_REG0C_SHADOW_HIGLIGHT)
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{
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@ -2020,7 +2028,7 @@ void sega315_5313_device::render_videoline_to_videobuffer(int scanline)
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}
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/* High Priority A+B Tiles */
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for (int x = 0; x < 320; x++)
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for (int x = 0; x < horz; x++)
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{
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if (!MEGADRIVE_REG0C_SHADOW_HIGLIGHT)
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{
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@ -2046,7 +2054,7 @@ void sega315_5313_device::render_videoline_to_videobuffer(int scanline)
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}
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/* High Priority Sprites */
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for (int x = 0; x < 320; x++)
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for (int x = 0; x < horz; x++)
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{
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if (!MEGADRIVE_REG0C_SHADOW_HIGLIGHT)
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{
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@ -2089,6 +2097,8 @@ void sega315_5313_device::render_videobuffer_to_screenbuffer(int scanline)
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{
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const unsigned palette_per_scanline = scanline * 64;
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u32 *lineptr;
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unsigned horz = m_lcm_scaling ? hres[get_hres()] : 320;
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unsigned mul = m_lcm_scaling ? hres_mul[get_hres()] : 1;
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if (!m_use_alt_timing)
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{
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@ -2114,27 +2124,27 @@ void sega315_5313_device::render_videobuffer_to_screenbuffer(int scanline)
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}
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}
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for (int x = 0; x < 320; x++)
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for (int srcx = 0, xx = 0, dstx = 0; srcx < horz; dstx++)
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{
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const u32 dat = m_video_renderline[x];
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const u32 dat = m_video_renderline[srcx];
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const u16 clut = (dat & 0x3f) + palette_per_scanline;
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if (!(dat & 0x20000))
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m_render_line_raw[x] = 0x100;
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m_render_line_raw[srcx] = 0x100;
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else
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m_render_line_raw[x] = 0x000;
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m_render_line_raw[srcx] = 0x000;
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if (!MEGADRIVE_REG0C_SHADOW_HIGLIGHT)
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{
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if (dat & 0x10000)
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{
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lineptr[x] = m_gfx_palette->pen(clut);
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m_render_line_raw[x] |= (dat & 0x3f) | 0x080;
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lineptr[dstx] = m_gfx_palette->pen(clut);
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m_render_line_raw[srcx] |= (dat & 0x3f) | 0x080;
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}
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else
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{
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lineptr[x] = m_gfx_palette->pen(clut);
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m_render_line_raw[x] |= (dat & 0x3f) | 0x040;
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lineptr[dstx] = m_gfx_palette->pen(clut);
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m_render_line_raw[srcx] |= (dat & 0x3f) | 0x040;
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}
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}
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else
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@ -2148,26 +2158,26 @@ void sega315_5313_device::render_videobuffer_to_screenbuffer(int scanline)
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case 0x10000: // (sprite) low priority, no shadow sprite, no highlight = shadow
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case 0x12000: // (sprite) low priority, shadow sprite, no highlight = shadow
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case 0x16000: // (sprite) normal pri, shadow sprite, no highlight = shadow?
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lineptr[x] = m_gfx_palette_shadow->pen(clut);
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m_render_line_raw[x] |= (dat & 0x3f) | 0x000;
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lineptr[dstx] = m_gfx_palette_shadow->pen(clut);
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m_render_line_raw[srcx] |= (dat & 0x3f) | 0x000;
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break;
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case 0x4000: // normal pri, no shadow sprite, no highlight = normal;
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case 0x8000: // low pri, highlight sprite = normal;
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lineptr[x] = m_gfx_palette->pen(clut);
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m_render_line_raw[x] |= (dat & 0x3f) | 0x040;
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lineptr[dstx] = m_gfx_palette->pen(clut);
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m_render_line_raw[srcx] |= (dat & 0x3f) | 0x040;
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break;
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case 0x14000: // (sprite) normal pri, no shadow sprite, no highlight = normal;
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case 0x18000: // (sprite) low pri, highlight sprite = normal;
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lineptr[x] = m_gfx_palette->pen(clut);
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m_render_line_raw[x] |= (dat & 0x3f) | 0x080;
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lineptr[dstx] = m_gfx_palette->pen(clut);
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m_render_line_raw[srcx] |= (dat & 0x3f) | 0x080;
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break;
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case 0x0c000: // normal pri, highlight set = highlight?
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case 0x1c000: // (sprite) normal pri, highlight set = highlight?
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lineptr[x] = m_gfx_palette_hilight->pen(clut);
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m_render_line_raw[x] |= (dat & 0x3f) | 0x0c0;
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lineptr[dstx] = m_gfx_palette_hilight->pen(clut);
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m_render_line_raw[srcx] |= (dat & 0x3f) | 0x0c0;
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break;
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case 0x0a000: // shadow set, highlight set - not possible
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@ -2175,18 +2185,30 @@ void sega315_5313_device::render_videobuffer_to_screenbuffer(int scanline)
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case 0x1a000: // (sprite)shadow set, highlight set - not possible
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case 0x1e000: // (sprite)shadow set, highlight set, normal set, not possible
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default:
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lineptr[x] = m_render_line_raw[x] |= (machine().rand() & 0x3f);
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lineptr[dstx] = m_render_line_raw[srcx] |= (machine().rand() & 0x3f);
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break;
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}
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}
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if (++xx >= mul)
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{
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srcx++;
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xx = 0;
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}
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}
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if (!m_32x_scanline_helper_func.isnull())
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m_32x_scanline_helper_func(scanline);
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if (!m_32x_scanline_func.isnull())
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{
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for (int x = 0; x < 320; x++)
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m_32x_scanline_func(x, m_video_renderline[x] & 0x20000, lineptr[x]);
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for (int srcx = 0, xx = 0, dstx = 0; srcx < horz; dstx++)
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{
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m_32x_scanline_func(srcx, m_video_renderline[srcx] & 0x20000, lineptr[dstx]);
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if (++xx >= mul)
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{
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srcx++;
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xx = 0;
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}
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}
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}
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}
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@ -2280,6 +2302,7 @@ void sega315_5313_device::vdp_handle_eof()
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{
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rectangle visarea;
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int scr_width = 320;
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int scr_mul = 1;
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m_vblank_flag = 0;
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//m_irq6_pending = 0; /* NO! (breaks warlock) */
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@ -2315,19 +2338,14 @@ void sega315_5313_device::vdp_handle_eof()
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m_z80irq_scanline <<= 1;
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}
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switch (MEGADRIVE_REG0C_RS0 | (MEGADRIVE_REG0C_RS1 << 1))
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{
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/* note, add 240 mode + init new timings! */
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case 0: scr_width = 256; break;
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case 1: scr_width = 256; break;
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case 2: scr_width = 320; break;
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case 3: scr_width = 320; break;
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}
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/* note, add 240 mode + init new timings! */
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scr_mul = m_lcm_scaling ? hres_mul[get_hres()] : 1;
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scr_width = hres[get_hres()] * scr_mul;
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// osd_printf_debug("my mode %02x", m_regs[0x0c]);
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visarea.set(0, scr_width - 1, 0, m_visible_scanlines - 1);
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screen().configure(480, m_total_scanlines, visarea, screen().frame_period().attoseconds());
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screen().configure(480 * scr_mul, m_total_scanlines, visarea, screen().frame_period().attoseconds());
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}
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@ -2353,7 +2371,7 @@ TIMER_DEVICE_CALLBACK_MEMBER(sega315_5313_device::megadriv_scanline_timer_callba
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{
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if (param == 0)
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{
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//printf("where are we? %d %d\n", screen().vpos(), screen().hpos());
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//printf("where are we? %d %d\n", screen().vpos(), screen_hpos());
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vdp_handle_eof();
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//vdp_clear_bitmap();
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}
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@ -32,6 +32,7 @@ public:
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auto lv6_irq() { return m_lv6irqline_callback.bind(); }
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auto lv4_irq() { return m_lv4irqline_callback.bind(); }
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void set_lcm_scaling(bool lcm_scaling) { m_lcm_scaling = lcm_scaling; }
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void set_alt_timing(int use_alt_timing) { m_use_alt_timing = use_alt_timing; }
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void set_pal_write_base(int palwrite_base) { m_palwrite_base = palwrite_base; }
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template <typename T> void set_ext_palette(T &&tag) { m_ext_palette.set_tag(std::forward<T>(tag)); }
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@ -116,6 +117,7 @@ protected:
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md_32x_interrupt_delegate m_32x_interrupt_func;
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md_32x_scanline_helper_delegate m_32x_scanline_helper_func;
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virtual int screen_hpos() override;
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private:
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// vdp code defines
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||||
const u8 CODE_DMA() { return m_vdp_code & 0x20; }
|
||||
@ -142,6 +144,7 @@ private:
|
||||
void get_nametable(gfx_element *tile_gfx, u16 tile_base, nametable_t &tile, int vcolumn);
|
||||
inline void draw_tile(nametable_t tile, int start, int end, int &dpos, bool is_fg);
|
||||
|
||||
inline u8 get_hres();
|
||||
int m_command_pending; // 2nd half of command pending..
|
||||
u16 m_command_part1;
|
||||
u16 m_command_part2;
|
||||
@ -159,6 +162,7 @@ private:
|
||||
|
||||
int m_imode;
|
||||
|
||||
bool m_lcm_scaling;
|
||||
int m_visible_scanlines;
|
||||
int m_irq6_scanline;
|
||||
int m_z80irq_scanline;
|
||||
|
||||
@ -632,20 +632,24 @@ uint32_t mplay_state::screen_update_megplay(screen_device &screen, bitmap_rgb32
|
||||
// if it's meant to be stretched we'll have to multiply the entire output x4 for the Genesis VDP and x5 for the SMS VDP to get a common 1280 pixel wide image
|
||||
|
||||
// overlay, only drawn for pixels != 0
|
||||
const u32 width = sega315_5124_device::WIDTH - (sega315_5124_device::LBORDER_START + sega315_5124_device::LBORDER_WIDTH);
|
||||
for (int y = 0; y < 224; y++)
|
||||
{
|
||||
uint32_t* lineptr = &bitmap.pix32(y);
|
||||
uint32_t* srcptr = &m_vdp1->get_bitmap().pix32(y + sega315_5124_device::TBORDER_START + sega315_5124_device::NTSC_224_TBORDER_HEIGHT);
|
||||
uint32_t* srcptr = &m_vdp1->get_bitmap().pix32(y + sega315_5124_device::TBORDER_START + sega315_5124_device::NTSC_224_TBORDER_HEIGHT, sega315_5124_device::LBORDER_START + sega315_5124_device::LBORDER_WIDTH);
|
||||
|
||||
for (int x = 0; x < sega315_5124_device::WIDTH; x++)
|
||||
for (int srcx = 0, xx = 0, dstx = 0; srcx < width; dstx++)
|
||||
{
|
||||
uint32_t src = srcptr[x] & 0xffffff;
|
||||
uint32_t src = srcptr[srcx] & 0xffffff;
|
||||
|
||||
if (src)
|
||||
{
|
||||
if (x>=16)
|
||||
lineptr[x-16] = src;
|
||||
|
||||
lineptr[dstx] = src;
|
||||
}
|
||||
if (++xx >= 5)
|
||||
{
|
||||
srcx++;
|
||||
xx = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -690,15 +694,18 @@ void mplay_state::megaplay(machine_config &config)
|
||||
io2.in_porte_cb().set(FUNC(mplay_state::bios_6404_r));
|
||||
io2.out_porte_cb().set(FUNC(mplay_state::bios_6404_w));
|
||||
|
||||
m_vdp->set_lcm_scaling(true);
|
||||
|
||||
/* New update functions to handle the extra layer */
|
||||
subdevice<screen_device>("megadriv")->set_raw(XTAL(10'738'635)/2, \
|
||||
sega315_5124_device::WIDTH, sega315_5124_device::LBORDER_START + sega315_5124_device::LBORDER_WIDTH, sega315_5124_device::LBORDER_START + sega315_5124_device::LBORDER_WIDTH + 256, \
|
||||
subdevice<screen_device>("megadriv")->set_raw((XTAL(10'738'635) * 5)/2, \
|
||||
sega315_5124_device::WIDTH * 5, (sega315_5124_device::LBORDER_START + sega315_5124_device::LBORDER_WIDTH) * 5, (sega315_5124_device::LBORDER_START + sega315_5124_device::LBORDER_WIDTH + 256) * 5, \
|
||||
sega315_5124_device::HEIGHT_NTSC, sega315_5124_device::TBORDER_START + sega315_5124_device::NTSC_224_TBORDER_HEIGHT, sega315_5124_device::TBORDER_START + sega315_5124_device::NTSC_224_TBORDER_HEIGHT + 224);
|
||||
subdevice<screen_device>("megadriv")->set_screen_update(FUNC(mplay_state::screen_update_megplay));
|
||||
|
||||
// Megaplay has an additional SMS VDP as an overlay
|
||||
SEGA315_5246(config, m_vdp1, MASTER_CLOCK / 5); /* ?? */
|
||||
m_vdp1->set_screen("megadriv");
|
||||
m_vdp1->set_hcounter_divide(5);
|
||||
m_vdp1->set_is_pal(false);
|
||||
m_vdp1->n_int().set_inputline(m_bioscpu, 0);
|
||||
m_vdp1->add_route(ALL_OUTPUTS, "lspeaker", 0.25);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user