scyclone.cpp: more work [David Haywood]
- added sprite colours, basic starfield (rendering isn't correct, eg. no twinkle, uncertain star positions); - documented what is probably a hw collision bit as you can't destroy the large sprites with it off, but if you turn it on all the time then a shot in the corner will cause the game to lock up repeating the explosion sequence over and over; - added preliminary flipscreen support
This commit is contained in:
Ivan Vangelista
GitHub
parent
6eed24165f
commit
432b804f49
@ -12,6 +12,27 @@
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there's an MB14241 near the Sprite ROM
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there's an MB14241 near the Sprite ROM
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1x 8DSW, 1x 4DSW
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1x 8DSW, 1x 4DSW
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there are 11 HM4716AP RAM chips near the main CPU (1 is unmarked, could be different?)
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HM4716AP is 16384 * 1-bit (2048 [0x800] bytes)
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1bpp of video needs 0x3800 bytes
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1bpp video would need 4 of these (with 0x400 bytes leftover)
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2bpp video would need 7 of these
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3bpp video would need 11 of these (with 0x400 bytes leftover)
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mainram is 0x400 bytes (so the leftover in above calc?)
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Notes:
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(to check on hardware)
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the stars scroll backwards when in cocktail mode, the direction changes when the screen
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is flipped but is still reversed compared to upright. We would have no way of knowing
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if we're in cocktail mode without checking the dipswitch, so I think this is a game bug
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furthermore the game seems to set what I believe to be the 'flipscreen' bit for player 2
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even when in 'upright' mode, so it's possible this romset was only really made for a
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cocktail table?
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*/
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*/
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#include "emu.h"
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#include "emu.h"
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@ -26,24 +47,70 @@ class scyclone_state : public driver_device
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public:
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public:
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scyclone_state(const machine_config &mconfig, device_type type, const char *tag)
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scyclone_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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: driver_device(mconfig, type, tag),
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m_mainram(*this, "mainram"),
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//m_vram(*this, "vram"),
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m_maincpu(*this, "maincpu"),
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m_maincpu(*this, "maincpu"),
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m_gfxdecode(*this, "gfxdecode") { }
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m_gfxdecode(*this, "gfxdecode"),
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m_stars(*this, "stars"),
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m_gfx1pal(*this, "gfx1pal"),
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m_palette(*this, "palette")
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{ }
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/* memory pointers */
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DECLARE_WRITE8_MEMBER(vidctrl_w);
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required_shared_ptr<uint8_t> m_mainram;
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DECLARE_WRITE8_MEMBER(scyclone_port06_w);
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DECLARE_WRITE8_MEMBER(sprite_xpos_w);
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DECLARE_WRITE8_MEMBER(sprite_ypos_w);
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DECLARE_WRITE8_MEMBER(sprite_colour_w);
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DECLARE_WRITE8_MEMBER(sprite_tile_w);
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DECLARE_WRITE8_MEMBER(starscroll_w);
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DECLARE_WRITE8_MEMBER(port0e_w);
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DECLARE_WRITE8_MEMBER(port0f_w);
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/* video-related */
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DECLARE_WRITE8_MEMBER(port06_w);
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DECLARE_WRITE8_MEMBER(videomask1_w);
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DECLARE_WRITE8_MEMBER(videomask2_w);
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DECLARE_WRITE8_MEMBER(vram_w);
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DECLARE_READ8_MEMBER(vram_r);
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uint32_t screen_update_scyclone(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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INTERRUPT_GEN_MEMBER(irq);
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CUSTOM_INPUT_MEMBER(collision_r);
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protected:
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virtual void machine_start() override;
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virtual void machine_start() override;
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virtual void machine_reset() override;
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virtual void machine_reset() override;
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virtual void video_start() override;
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virtual void video_start() override;
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uint32_t screen_update_scyclone(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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private:
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required_device<cpu_device> m_maincpu;
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required_device<cpu_device> m_maincpu;
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required_device<gfxdecode_device> m_gfxdecode;
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required_device<gfxdecode_device> m_gfxdecode;
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required_region_ptr<uint8_t> m_stars;
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required_region_ptr<uint8_t> m_gfx1pal;
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required_device<palette_device> m_palette;
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INTERRUPT_GEN_MEMBER(irq);
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/* memory pointers */
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std::unique_ptr<uint8_t[]> m_vram;
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uint8_t m_videowritemask;
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uint8_t m_videowritemask2;
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uint8_t m_sprite_xpos;
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uint8_t m_sprite_ypos;
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uint8_t m_sprite_colour;
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uint8_t m_sprite_tile;
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uint8_t m_starscroll;
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uint8_t m_p0e;
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uint8_t m_p0f;
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uint8_t m_vidctrl;
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uint8_t m_hascollided;
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/* video-related */
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const uint8_t get_sprite_pixel(int x, int y);
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const uint8_t get_bitmap_pixel(int x, int y);
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uint32_t draw_starfield(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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uint32_t draw_bitmap_and_sprite(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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};
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};
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@ -56,25 +123,145 @@ public:
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void scyclone_state::video_start()
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void scyclone_state::video_start()
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{
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{
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m_vram = std::make_unique<uint8_t []>(0x3800*3);
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m_videowritemask = 0x00;
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m_videowritemask2 = 0x00;
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for (int i = 0; i < 8; i++)
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m_palette->set_pen_color(i, rgb_t(pal1bit(i >> 0), pal1bit(i >> 1), pal1bit(i >> 2)));
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for (int i = 0; i < 16; i++)
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{
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uint8_t col = m_gfx1pal[i];
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m_palette->set_pen_color(i+8, rgb_t(pal1bit(col >> 2), pal1bit(col >> 1), pal1bit(col >> 0)));
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}
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}
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}
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uint32_t scyclone_state::screen_update_scyclone(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
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const uint8_t scyclone_state::get_sprite_pixel(int x, int y)
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{
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{
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int count = 0;
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int minx = 0xe0-m_sprite_xpos;
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int miny = 0xe0-m_sprite_ypos;
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int col = m_sprite_colour & 3;
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int code = m_sprite_tile & 7;
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for (int y=0;y<256;y++)
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int maxx = minx + 32;
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int maxy = miny + 32;
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/* if we're not even inside the sprite, return nothing */
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if (x < minx || x >= maxx)
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return 0;
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if (y < miny || y >= maxy)
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return 0;
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int sprx = x-minx;
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int spry = y-miny;
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const uint8_t* srcdata = m_gfxdecode->gfx(0)->get_data(code);
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uint8_t pix = srcdata[spry*32 + sprx] + col*4;
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return pix;
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}
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const uint8_t scyclone_state::get_bitmap_pixel(int x, int y)
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{
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const uint8_t video_data0 = m_vram[(y*32+(x/8))];
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const uint8_t video_data1 = m_vram[(y*32+(x/8))+0x3800];
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const uint8_t video_data2 = m_vram[(y*32+(x/8))+0x3800+0x3800];
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int const bit(x & 0x07);
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const uint8_t plane0(BIT(video_data0, bit));
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const uint8_t plane1(BIT(video_data1, bit));
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const uint8_t plane2(BIT(video_data2, bit));
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const uint8_t pal = plane0 | (plane1<<1) | (plane2<<2);
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return pal;
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}
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uint32_t scyclone_state::draw_starfield(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
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{
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const pen_t *paldata = m_palette->pens();
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// this is not correct, but the first 0x80 bytes of the PROM are blank suggesting that this
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// part is for the non-visible 32 rows at least, so it should be something like this
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// blinking and colours are not understood at all
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for (int strip=0;strip<16;strip++)
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{
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for (int x=0;x<256;x++)
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{
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const uint8_t star = m_stars[((x+m_starscroll) & 0x3f)+(strip*0x40)];
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for (int y=0;y<16;y++)
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{
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const int ypos = (y+16*strip)-32;
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if (ypos>=0 && ypos<256)
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{
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int noclipped = 0;
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if (m_vidctrl & 0x08)
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noclipped = x < 64*3;
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else
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noclipped = x >= 64;
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if (y == star && star != 0 && noclipped)
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bitmap.pix32(ypos, x) = paldata[7];
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else
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bitmap.pix32(ypos, x) = paldata[0];
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}
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}
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}
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}
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return 0;
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}
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uint32_t scyclone_state::draw_bitmap_and_sprite(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
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{
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const pen_t *paldata = m_palette->pens();
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m_hascollided = 0;
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for (int y=0;y<256-32;y++)
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{
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{
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for (int x=0;x<256/8;x++)
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for (int x=0;x<256/8;x++)
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{
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{
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uint8_t video_data = m_mainram[count];
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for (int i=0;i<8;i++)
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for (int i=0;i<8;i++)
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{
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{
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pen_t pen = ((video_data>>i) & 0x01) ? rgb_t::white() : rgb_t::black();
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int realx = 0;
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bitmap.pix32(y, x*8+i) = pen;
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int realy = 0;
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}
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count++;
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if (m_vidctrl & 0x08)
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{
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realx = 255 - ((x*8)+i);
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realy = 255-32-y;
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}
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else
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{
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realx = (x*8)+i;
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realy = y;
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}
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uint8_t pal = get_bitmap_pixel(realx, realy);
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if (pal) bitmap.pix32(y, (x*8)+i) = paldata[pal];
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uint8_t pal2 = get_sprite_pixel(realx, realy);
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if (pal2 & 0x3)
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{
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bitmap.pix32(y, (x*8)+i) = paldata[8+pal2];
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if (pal == 0x7) m_hascollided = 1;
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}
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}
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}
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}
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}
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}
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@ -82,10 +269,23 @@ uint32_t scyclone_state::screen_update_scyclone(screen_device &screen, bitmap_rg
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}
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}
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uint32_t scyclone_state::screen_update_scyclone(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
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{
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draw_starfield(screen,bitmap,cliprect);
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draw_bitmap_and_sprite(screen,bitmap,cliprect);
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//popmessage("%02x %02x %02x %02x %02x %02x %02x", m_sprite_xpos, m_sprite_ypos, m_sprite_colour, m_sprite_tile, m_starscroll, m_p0e, m_p0f);
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return 0;
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}
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static ADDRESS_MAP_START( scyclone_map, AS_PROGRAM, 8, scyclone_state )
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static ADDRESS_MAP_START( scyclone_map, AS_PROGRAM, 8, scyclone_state )
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AM_RANGE(0x0000, 0x2fff) AM_ROM
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AM_RANGE(0x0000, 0x2fff) AM_ROM
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AM_RANGE(0x4000, 0x5fff) AM_RAM AM_SHARE("mainram")
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AM_RANGE(0x4000, 0x43ff) AM_RAM
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AM_RANGE(0x4400, 0x5fff) AM_READWRITE(vram_r,vram_w)
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AM_RANGE(0x6000, 0x60ff) AM_NOP // this just seems to be overflow from the VRAM writes, probably goes nowhere
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ADDRESS_MAP_END
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ADDRESS_MAP_END
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@ -94,17 +294,17 @@ static ADDRESS_MAP_START( scyclone_iomap, AS_IO, 8, scyclone_state )
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AM_RANGE(0x00, 0x00) AM_DEVREAD("mb14241", mb14241_device, shift_result_r) AM_DEVWRITE("mb14241", mb14241_device, shift_count_w)
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AM_RANGE(0x00, 0x00) AM_DEVREAD("mb14241", mb14241_device, shift_result_r) AM_DEVWRITE("mb14241", mb14241_device, shift_count_w)
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AM_RANGE(0x01, 0x01) AM_READ_PORT("IN0") AM_DEVWRITE("mb14241", mb14241_device, shift_data_w)
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AM_RANGE(0x01, 0x01) AM_READ_PORT("IN0") AM_DEVWRITE("mb14241", mb14241_device, shift_data_w)
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AM_RANGE(0x02, 0x02) AM_READ_PORT("IN1")
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AM_RANGE(0x02, 0x02) AM_READ_PORT("IN1")
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AM_RANGE(0x03, 0x03) AM_READ_PORT("DSW0") AM_WRITENOP
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AM_RANGE(0x03, 0x03) AM_READ_PORT("DSW0") AM_WRITE(vidctrl_w)
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AM_RANGE(0x04, 0x04) AM_WRITENOP
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AM_RANGE(0x04, 0x04) AM_WRITE(sprite_xpos_w)
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AM_RANGE(0x05, 0x05) AM_WRITENOP
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AM_RANGE(0x05, 0x05) AM_WRITE(sprite_ypos_w)
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AM_RANGE(0x06, 0x06) AM_WRITE(scyclone_port06_w)
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AM_RANGE(0x06, 0x06) AM_WRITE(port06_w) // possible watchdog or star twinkle related
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AM_RANGE(0x08, 0x08) AM_WRITENOP
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AM_RANGE(0x08, 0x08) AM_WRITE(sprite_colour_w)
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AM_RANGE(0x09, 0x09) AM_WRITENOP
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AM_RANGE(0x09, 0x09) AM_WRITE(sprite_tile_w)
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AM_RANGE(0x0a, 0x0a) AM_WRITENOP
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AM_RANGE(0x0a, 0x0a) AM_WRITE(starscroll_w)
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AM_RANGE(0x0e, 0x0e) AM_WRITENOP
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AM_RANGE(0x0e, 0x0e) AM_WRITE(port0e_w)
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AM_RANGE(0x0f, 0x0f) AM_WRITENOP
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AM_RANGE(0x0f, 0x0f) AM_WRITE(port0f_w)
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AM_RANGE(0x40, 0x40) AM_WRITENOP
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AM_RANGE(0x40, 0x40) AM_WRITE(videomask1_w)
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AM_RANGE(0x80, 0x80) AM_WRITENOP
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AM_RANGE(0x80, 0x80) AM_WRITE(videomask2_w)
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ADDRESS_MAP_END
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ADDRESS_MAP_END
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@ -121,9 +321,18 @@ static ADDRESS_MAP_START( scyclone_sub_iomap, AS_IO, 8, scyclone_state )
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ADDRESS_MAP_END
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ADDRESS_MAP_END
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// appears to be when a white bitmap pixel (col 0x7) collides with a large sprite?
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// if you simply set it to 1 and shoot in the left corner, the game gets stuck
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// but if you have it set to 0 there are no collisions with large objects
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CUSTOM_INPUT_MEMBER(scyclone_state::collision_r)
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{
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return m_hascollided;
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}
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static INPUT_PORTS_START( scyclone )
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static INPUT_PORTS_START( scyclone )
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PORT_START("IN0")
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PORT_START("IN0")
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PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNKNOWN )
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PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
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PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_TILT )
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PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_TILT )
|
||||||
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_START2 )
|
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_START2 )
|
||||||
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_START1 )
|
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_START1 )
|
||||||
@ -133,11 +342,12 @@ static INPUT_PORTS_START( scyclone )
|
|||||||
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY
|
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY
|
||||||
|
|
||||||
PORT_START("IN1")
|
PORT_START("IN1")
|
||||||
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNKNOWN )
|
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, scyclone_state,collision_r, nullptr) // hw collision?
|
||||||
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_UNKNOWN )
|
// maybe these 4 are the 4xdsw bank?
|
||||||
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNKNOWN )
|
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
|
||||||
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNKNOWN )
|
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
|
||||||
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNKNOWN )
|
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
|
||||||
|
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
|
||||||
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL PORT_CONDITION("DSW0",0x04,EQUALS,0x00)
|
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL PORT_CONDITION("DSW0",0x04,EQUALS,0x00)
|
||||||
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_COCKTAIL PORT_CONDITION("DSW0",0x04,EQUALS,0x00)
|
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_COCKTAIL PORT_CONDITION("DSW0",0x04,EQUALS,0x00)
|
||||||
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_COCKTAIL PORT_CONDITION("DSW0",0x04,EQUALS,0x00)
|
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_COCKTAIL PORT_CONDITION("DSW0",0x04,EQUALS,0x00)
|
||||||
@ -151,18 +361,160 @@ static INPUT_PORTS_START( scyclone )
|
|||||||
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("DSW0:3")
|
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("DSW0:3")
|
||||||
PORT_DIPSETTING( 0x00, DEF_STR( Cocktail ) )
|
PORT_DIPSETTING( 0x00, DEF_STR( Cocktail ) )
|
||||||
PORT_DIPSETTING( 0x04, DEF_STR( Upright ) )
|
PORT_DIPSETTING( 0x04, DEF_STR( Upright ) )
|
||||||
PORT_DIPUNKNOWN_DIPLOC( 0x08, 0x00, "DSW0:4" ) // seems to disable collisions
|
PORT_DIPNAME( 0x08, 0x00, "Disable Collision (Buggy!)" ) PORT_DIPLOCATION("DSW0:4") // this causes the game to malfunction, likely leftover debug feature
|
||||||
PORT_DIPUNKNOWN_DIPLOC( 0x10, 0x10, "DSW0:5" )
|
PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
|
||||||
|
PORT_DIPSETTING( 0x08, DEF_STR( On ) )
|
||||||
|
PORT_DIPNAME( 0x10, 0x00, "Show Copyright Date" ) PORT_DIPLOCATION("DSW0:5")
|
||||||
|
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
|
||||||
|
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
|
||||||
PORT_DIPUNKNOWN_DIPLOC( 0x20, 0x20, "DSW0:6" )
|
PORT_DIPUNKNOWN_DIPLOC( 0x20, 0x20, "DSW0:6" )
|
||||||
PORT_DIPUNKNOWN_DIPLOC( 0x40, 0x40, "DSW0:7" )
|
PORT_DIPUNKNOWN_DIPLOC( 0x40, 0x40, "DSW0:7" )
|
||||||
PORT_DIPUNKNOWN_DIPLOC( 0x80, 0x80, "DSW0:8" )
|
PORT_DIPUNKNOWN_DIPLOC( 0x80, 0x80, "DSW0:8" )
|
||||||
INPUT_PORTS_END
|
INPUT_PORTS_END
|
||||||
|
|
||||||
WRITE8_MEMBER(scyclone_state::scyclone_port06_w)
|
READ8_MEMBER(scyclone_state::vram_r)
|
||||||
{
|
{
|
||||||
|
uint8_t ret = 0;
|
||||||
|
// not sure, collisions depend on readback
|
||||||
|
ret |= m_vram[offset];
|
||||||
|
ret |= m_vram[offset+0x3800];
|
||||||
|
ret |= m_vram[offset+0x3800+0x3800];
|
||||||
|
|
||||||
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::vram_w)
|
||||||
|
{
|
||||||
|
// this seems to give good colours for most things?
|
||||||
|
// although the lives appear to be solid pink in video?
|
||||||
|
// CREDIT text looks poor, but seems to be same on real HW?
|
||||||
|
|
||||||
|
#if 0
|
||||||
|
// halves are NOT equal in between level cutscenes
|
||||||
|
// this is used when drawing the pointing stick, need closeup reference
|
||||||
|
|
||||||
|
// 0x40 and 0x80 ports always seem equal tho
|
||||||
|
if ((m_videowritemask & 0xf) != ((m_videowritemask>>4) & 0xf))
|
||||||
|
{
|
||||||
|
printf("m_videowritemask halves not equal %02x\n", m_videowritemask);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((m_videowritemask2 & 0xf) != ((m_videowritemask2>>4) & 0xf))
|
||||||
|
{
|
||||||
|
printf("m_videowritemask2 halves not equal %02x\n", m_videowritemask2);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((m_videowritemask) != (m_videowritemask2))
|
||||||
|
{
|
||||||
|
printf("m_videowritemask != m_videowritemask2 %02x %02x\n", m_videowritemask, m_videowritemask2);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
for (int i=0 ;i<8 ;i++)
|
||||||
|
{
|
||||||
|
uint8_t databit = data & (1<<i);
|
||||||
|
|
||||||
|
uint8_t videowritemask = 0;
|
||||||
|
|
||||||
|
if (i>=6) videowritemask = (m_videowritemask>>4) & 0x0f;
|
||||||
|
else if (i>=4) videowritemask = (m_videowritemask>>0) & 0x0f;
|
||||||
|
if (i>=2) videowritemask = (m_videowritemask2>>4) & 0x0f;
|
||||||
|
else videowritemask = (m_videowritemask2>>0) & 0x0f;
|
||||||
|
|
||||||
|
if (databit)
|
||||||
|
{
|
||||||
|
if (!(videowritemask & 1)) m_vram[offset] |= databit;
|
||||||
|
if (!(videowritemask & 2)) m_vram[offset+0x3800] |= databit;
|
||||||
|
if (!(videowritemask & 4)) m_vram[offset+0x3800+0x3800] |= databit;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
uint8_t nodatabit = (1<<i);
|
||||||
|
|
||||||
|
m_vram[offset] &= ~nodatabit;
|
||||||
|
m_vram[offset+0x3800] &= ~nodatabit;
|
||||||
|
m_vram[offset+0x3800+0x3800] &= ~nodatabit;
|
||||||
|
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::vidctrl_w)
|
||||||
|
{
|
||||||
|
// ---- fa-u
|
||||||
|
// f = flipscreen (always set during player 2 turn, even in upright mode?!)
|
||||||
|
// a = alternates during attract mode, enabled during gameplay
|
||||||
|
// u = unknown but used (set to 1 during gameplay)
|
||||||
|
m_vidctrl = data;
|
||||||
|
|
||||||
|
if (data & 0xf2)
|
||||||
|
{
|
||||||
|
printf("vidctrl_w %02x\n", data);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::sprite_xpos_w)
|
||||||
|
{
|
||||||
|
m_sprite_xpos = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::sprite_ypos_w)
|
||||||
|
{
|
||||||
|
m_sprite_ypos = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::sprite_colour_w)
|
||||||
|
{
|
||||||
|
m_sprite_colour = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::sprite_tile_w)
|
||||||
|
{
|
||||||
|
m_sprite_tile = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::starscroll_w)
|
||||||
|
{
|
||||||
|
m_starscroll = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::port0e_w)
|
||||||
|
{
|
||||||
|
// sound trigger?
|
||||||
|
m_p0e = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::port0f_w)
|
||||||
|
{
|
||||||
|
m_p0f = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::port06_w)
|
||||||
|
{
|
||||||
|
// watchdog?
|
||||||
|
// goes through values 0x06 to 0x01 could also be star related?
|
||||||
|
}
|
||||||
|
|
||||||
|
// these seem to select where the vram writes go
|
||||||
|
// 3 possible planes, probably one 4 bits per 2 pixels?
|
||||||
|
WRITE8_MEMBER(scyclone_state::videomask1_w)
|
||||||
|
{
|
||||||
|
// format seems to be -xxx -xxx
|
||||||
|
m_videowritemask = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
WRITE8_MEMBER(scyclone_state::videomask2_w)
|
||||||
|
{
|
||||||
|
// format seems to be -xxx -xxx
|
||||||
|
m_videowritemask2 = data;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
static const gfx_layout tiles32x32_layout =
|
static const gfx_layout tiles32x32_layout =
|
||||||
{
|
{
|
||||||
32,32,
|
32,32,
|
||||||
@ -175,7 +527,7 @@ static const gfx_layout tiles32x32_layout =
|
|||||||
};
|
};
|
||||||
|
|
||||||
static GFXDECODE_START( scyclone )
|
static GFXDECODE_START( scyclone )
|
||||||
GFXDECODE_ENTRY( "gfx1", 0, tiles32x32_layout, 0, 16 )
|
GFXDECODE_ENTRY( "gfx1", 0, tiles32x32_layout, 8, 4 )
|
||||||
GFXDECODE_END
|
GFXDECODE_END
|
||||||
|
|
||||||
|
|
||||||
@ -186,8 +538,19 @@ void scyclone_state::machine_start()
|
|||||||
|
|
||||||
void scyclone_state::machine_reset()
|
void scyclone_state::machine_reset()
|
||||||
{
|
{
|
||||||
|
m_sprite_xpos = 0;
|
||||||
|
m_sprite_ypos = 0;
|
||||||
|
m_sprite_colour = 0;
|
||||||
|
m_sprite_tile = 0;
|
||||||
|
m_starscroll = 0;
|
||||||
|
m_p0e = 0;
|
||||||
|
m_p0f = 0;
|
||||||
|
|
||||||
|
m_hascollided = 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
INTERRUPT_GEN_MEMBER(scyclone_state::irq)
|
INTERRUPT_GEN_MEMBER(scyclone_state::irq)
|
||||||
{
|
{
|
||||||
// CPU runs in IM0
|
// CPU runs in IM0
|
||||||
@ -198,10 +561,10 @@ INTERRUPT_GEN_MEMBER(scyclone_state::irq)
|
|||||||
static MACHINE_CONFIG_START( scyclone, scyclone_state )
|
static MACHINE_CONFIG_START( scyclone, scyclone_state )
|
||||||
|
|
||||||
/* basic machine hardware */
|
/* basic machine hardware */
|
||||||
MCFG_CPU_ADD("maincpu", Z80, 8000000) // MOSTEK Z80-CPU ? MHz (there's also a 9.987MHz XTAL)
|
MCFG_CPU_ADD("maincpu", Z80, 5000000/2) // MOSTEK Z80-CPU ? MHz (there's also a 9.987MHz XTAL) intermissions seem driven directly by CPU speed for reference
|
||||||
MCFG_CPU_PROGRAM_MAP(scyclone_map)
|
MCFG_CPU_PROGRAM_MAP(scyclone_map)
|
||||||
MCFG_CPU_IO_MAP(scyclone_iomap)
|
MCFG_CPU_IO_MAP(scyclone_iomap)
|
||||||
MCFG_CPU_VBLANK_INT_DRIVER("screen", scyclone_state, irq)
|
MCFG_CPU_VBLANK_INT_DRIVER("screen", scyclone_state, irq)
|
||||||
|
|
||||||
// sound ?
|
// sound ?
|
||||||
MCFG_CPU_ADD("subcpu", Z80, 5000000/2) // LH0080 Z80-CPU SHARP ? MHz (5Mhz XTAL on this sub-pcb)
|
MCFG_CPU_ADD("subcpu", Z80, 5000000/2) // LH0080 Z80-CPU SHARP ? MHz (5Mhz XTAL on this sub-pcb)
|
||||||
@ -216,11 +579,12 @@ static MACHINE_CONFIG_START( scyclone, scyclone_state )
|
|||||||
MCFG_SCREEN_REFRESH_RATE(60)
|
MCFG_SCREEN_REFRESH_RATE(60)
|
||||||
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
|
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
|
||||||
MCFG_SCREEN_SIZE(256, 256)
|
MCFG_SCREEN_SIZE(256, 256)
|
||||||
MCFG_SCREEN_VISIBLE_AREA(0, 256-1, 32, 256-1)
|
MCFG_SCREEN_VISIBLE_AREA(0, 256-1, 0, 256-32-1)
|
||||||
MCFG_SCREEN_UPDATE_DRIVER(scyclone_state, screen_update_scyclone)
|
MCFG_SCREEN_UPDATE_DRIVER(scyclone_state, screen_update_scyclone)
|
||||||
|
MCFG_SCREEN_VIDEO_ATTRIBUTES(VIDEO_ALWAYS_UPDATE) // due to hw collisions
|
||||||
|
|
||||||
MCFG_GFXDECODE_ADD("gfxdecode", "palette", scyclone)
|
MCFG_GFXDECODE_ADD("gfxdecode", "palette", scyclone)
|
||||||
MCFG_PALETTE_ADD("palette", 0x100)
|
MCFG_PALETTE_ADD("palette", 8 + 4*4)
|
||||||
|
|
||||||
/* sound hardware */
|
/* sound hardware */
|
||||||
MCFG_SPEAKER_STANDARD_MONO("mono")
|
MCFG_SPEAKER_STANDARD_MONO("mono")
|
||||||
@ -246,11 +610,15 @@ ROM_START( scyclone )
|
|||||||
ROM_REGION( 0x0800, "gfx1", 0 ) // 32x32x2 sprites?
|
ROM_REGION( 0x0800, "gfx1", 0 ) // 32x32x2 sprites?
|
||||||
ROM_LOAD( "DE01.11C.2716", 0x0000, 0x0800, CRC(bf770730) SHA1(1d0f9235b0618e3f4dd6db47efbdf92e2b00f5f6) )
|
ROM_LOAD( "DE01.11C.2716", 0x0000, 0x0800, CRC(bf770730) SHA1(1d0f9235b0618e3f4dd6db47efbdf92e2b00f5f6) )
|
||||||
|
|
||||||
ROM_REGION( 0x0840, "proms", 0 )
|
ROM_REGION( 0x0400, "gfx1pal", 0 ) // format is 00 xx xx xx 00 xx xx xx 00 xx xx xx 00 xx xx xx (rest of rom unused) so probably 4 palettes for the 2bpp sprites
|
||||||
ROM_LOAD( "DE02.5B.82S137", 0x0000, 0x0400, CRC(fe4b278c) SHA1(c03080ab4d3fb84b8eec7087b925d1a1d8565fcc) )
|
ROM_LOAD( "DE02.5B.82S137", 0x0000, 0x0400, CRC(fe4b278c) SHA1(c03080ab4d3fb84b8eec7087b925d1a1d8565fcc) )
|
||||||
ROM_LOAD( "DE15.3A.82S137", 0x0400, 0x0400, CRC(c2816161) SHA1(2d0e7b4dbdb2af1481a4b7e45b1f9e3640f69aec) )
|
|
||||||
ROM_LOAD( "DE16.4A.82S123", 0x0800, 0x0020, CRC(5178e9c5) SHA1(dd2f81894069282f37feae21c5cfacf50f77dcd5) )
|
ROM_REGION( 0x0840, "stars", 0 ) // probably the starfield bitmap
|
||||||
ROM_LOAD( "DE17.2E.82S123", 0x0820, 0x0020, CRC(3c8572e4) SHA1(c908c4ed99828fff576c3d0963cd8b99edeb993b) )
|
ROM_LOAD( "DE15.3A.82S137", 0x0000, 0x0400, CRC(c2816161) SHA1(2d0e7b4dbdb2af1481a4b7e45b1f9e3640f69aec) )
|
||||||
|
|
||||||
|
ROM_REGION( 0x0040, "proms", 0 )
|
||||||
|
ROM_LOAD( "DE16.4A.82S123", 0x0000, 0x0020, CRC(5178e9c5) SHA1(dd2f81894069282f37feae21c5cfacf50f77dcd5) )
|
||||||
|
ROM_LOAD( "DE17.2E.82S123", 0x0020, 0x0020, CRC(3c8572e4) SHA1(c908c4ed99828fff576c3d0963cd8b99edeb993b) )
|
||||||
ROM_END
|
ROM_END
|
||||||
|
|
||||||
GAME( 1980, scyclone, 0, scyclone, scyclone, driver_device, 0, ROT270, "Taito Corporation", "Space Cyclone", MACHINE_NOT_WORKING | MACHINE_WRONG_COLORS | MACHINE_NO_SOUND )
|
GAME( 1980, scyclone, 0, scyclone, scyclone, driver_device, 0, ROT270, "Taito Corporation", "Space Cyclone", MACHINE_NOT_WORKING | MACHINE_IMPERFECT_COLORS | MACHINE_NO_SOUND )
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user