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zac2650.cpp: Rename driver to zac1b1120.cpp; add XTAL-derived timings and some notes; eliminate spurious 3x scaling of Y-axis

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This commit is contained in:
AJR 2023-07-11 10:48:19 -04:00
parent b61de16bc2
commit acd59988cd
2 changed files with 53 additions and 40 deletions
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3
src/emu/xtal.cpp
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@ -256,6 +256,7 @@ const double XTAL::known_xtals[] = {
15'400'000, /* 15.4_MHz_XTAL DVK KSM */
15'468'480, /* 15.46848_MHz_XTAL Bank Panic h/w, Sega G80 */
15'582'000, /* 15.582_MHz_XTAL Zentec Zephyr */
15'625'000, /* 15.625_MHz_XTAL Zaccaria The Invaders */
15'667'200, /* 15.6672_MHz_XTAL Apple Macintosh */
15'700'000, /* 15.7_MHz_XTAL Motogonki */
15'741'000, /* 15.741_MHz_XTAL DECmate II 80-column display clock */
@ -347,7 +348,7 @@ const double XTAL::known_xtals[] = {
23'961'600, /* 23.9616_MHz_XTAL Osborne 4 (Vixen) */
24'000'000, /* 24_MHz_XTAL Mario, 80's Data East games, 80's Konami games */
24'073'400, /* 24.0734_MHz_XTAL DEC Rainbow 100 */
24'167'829, /* 24.167829MHz_XTAL Neo Geo AES rev. 3-3 and later */
24'167'829, /* 24.167829_MHz_XTAL Neo Geo AES rev. 3-3 and later (~1536x NTSC line rate) */
24'270'000, /* 24.27_MHz_XTAL CIT-101XL */
24'300'000, /* 24.3_MHz_XTAL ADM 36 132-column display clock */
24'576'000, /* 24.576_MHz_XTAL Pole Position h/w, Model 3 CPU board */

90
src/mame/zaccaria/zac2650.cpp → src/mame/zaccaria/zac1b1120.cpp
View File

@ -2,13 +2,16 @@
// copyright-holders: Mike Coates
/*
* Signetics 2650 CPU Games
* Zaccaria 1B1120 hardware (Signetics 2650 based)
*
* Zaccaria - The Invaders
* Sidam - Super Invader Attack
* Zaccaria - Dodgem
*
* mike@the-coates.com
* The IC at location 48 in the upper right corner (lower 4 bits of 256-byte RAM)
* was originally intended to be a battery-backed 5101. However, all known games
* leave the battery unpopulated (Invaders schematics say "OMIT") and place a
* 2101 RAM there instead.
*
*
* TODO: discrete sound
@ -30,10 +33,10 @@
namespace {
class zac2650_state : public driver_device
class zac1b1120_state : public driver_device
{
public:
zac2650_state(const machine_config &mconfig, device_type type, const char *tag) :
zac1b1120_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_s2636(*this, "s2636"),
@ -46,6 +49,7 @@ public:
{ }
void tinvader(machine_config &config);
void dodgem(machine_config &config);
protected:
virtual void video_start() override;
@ -87,19 +91,19 @@ private:
// video
void zac2650_state::videoram_w(offs_t offset, uint8_t data)
void zac1b1120_state::videoram_w(offs_t offset, uint8_t data)
{
m_videoram[offset] = data;
m_bg_tilemap->mark_tile_dirty(offset);
}
uint8_t zac2650_state::s2636_r(offs_t offset)
uint8_t zac1b1120_state::s2636_r(offs_t offset)
{
if (offset != 0xcb) return m_s2636_0_ram[offset];
else return m_collision_sprite;
}
void zac2650_state::s2636_w(offs_t offset, uint8_t data)
void zac1b1120_state::s2636_w(offs_t offset, uint8_t data)
{
m_s2636_0_ram[offset] = data;
m_gfxdecode->gfx(1)->mark_dirty(offset / 8);
@ -110,7 +114,7 @@ void zac2650_state::s2636_w(offs_t offset, uint8_t data)
}
}
uint8_t zac2650_state::port_0_r()
uint8_t zac1b1120_state::port_0_r()
{
return m_1e80->read() - m_collision_background;
}
@ -119,7 +123,7 @@ uint8_t zac2650_state::port_0_r()
/* Check for collision between 2 sprites */
/*****************************************/
int zac2650_state::sprite_collision(int first, int second)
int zac1b1120_state::sprite_collision(int first, int second)
{
int checksum = 0;
const rectangle &visarea = m_screen->visible_area();
@ -127,7 +131,7 @@ int zac2650_state::sprite_collision(int first, int second)
if ((m_s2636_0_ram[first * 0x10 + 10] < 0xf0) && (m_s2636_0_ram[second * 0x10 + 10] < 0xf0))
{
int const fx = (m_s2636_0_ram[first * 0x10 + 10] * 4 )- 22;
int const fy = (m_s2636_0_ram[first * 0x10 + 12] * 3) + 3;
int const fy = m_s2636_0_ram[first * 0x10 + 12] + 1;
int const expand = (first == 1) ? 2 : 1;
// Draw first sprite
@ -155,7 +159,7 @@ int zac2650_state::sprite_collision(int first, int second)
second * 2,
1,
0, 0,
(m_s2636_0_ram[second * 0x10 + 10] * 4) - 22, (m_s2636_0_ram[second * 0x10 + 12] * 3) + 3, 0);
(m_s2636_0_ram[second * 0x10 + 10] * 4) - 22, m_s2636_0_ram[second * 0x10 + 12] + 1, 0);
// Remove fingerprint
@ -180,16 +184,16 @@ int zac2650_state::sprite_collision(int first, int second)
return checksum;
}
TILE_GET_INFO_MEMBER(zac2650_state::get_bg_tile_info)
TILE_GET_INFO_MEMBER(zac1b1120_state::get_bg_tile_info)
{
int const code = m_videoram[tile_index];
tileinfo.set(0, code, 0, 0);
}
void zac2650_state::video_start()
void zac1b1120_state::video_start()
{
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(zac2650_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 24, 24, 32, 32);
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(zac1b1120_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8 * 3, 8, 32, 32);
m_screen->register_screen_bitmap(m_bitmap);
m_screen->register_screen_bitmap(m_spritebitmap);
@ -203,7 +207,7 @@ void zac2650_state::video_start()
save_item(NAME(m_collision_sprite));
}
void zac2650_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect)
void zac1b1120_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
const rectangle &visarea = m_screen->visible_area();
@ -230,7 +234,7 @@ void zac2650_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect
int const spriteno = (offs / 8);
int const expand = ((m_s2636_0_ram[0xc0] & (spriteno * 2)) != 0) ? 2 : 1;
int const bx = (m_s2636_0_ram[offs + 10] * 4) - 22;
int const by = (m_s2636_0_ram[offs + 12] * 3) + 3;
int const by = m_s2636_0_ram[offs + 12] + 1;
// Sprite->Background collision detection
m_gfxdecode->gfx(expand)->transpen(bitmap, cliprect,
@ -270,7 +274,7 @@ void zac2650_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect
// if(sprite_collision(2, 4)) m_collision_sprite |= 0x01; // Not used
}
uint32_t zac2650_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
uint32_t zac1b1120_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
draw_sprites(bitmap, cliprect);
@ -282,18 +286,18 @@ uint32_t zac2650_state::screen_update(screen_device &screen, bitmap_ind16 &bitma
/***********************************************************************************************/
void zac2650_state::main_map(address_map &map)
void zac1b1120_state::main_map(address_map &map)
{
map(0x0000, 0x17ff).rom();
map(0x1800, 0x1bff).ram().w(FUNC(zac2650_state::videoram_w)).share(m_videoram);
map(0x1800, 0x1bff).ram().w(FUNC(zac1b1120_state::videoram_w)).share(m_videoram);
map(0x1c00, 0x1cff).ram();
map(0x1d00, 0x1dff).ram();
map(0x1e80, 0x1e80).r(FUNC(zac2650_state::port_0_r)).w(FUNC(zac2650_state::sound_w));
map(0x1e80, 0x1e80).r(FUNC(zac1b1120_state::port_0_r)).w(FUNC(zac1b1120_state::sound_w));
map(0x1e81, 0x1e81).portr("1E81");
map(0x1e82, 0x1e82).portr("1E82");
map(0x1e85, 0x1e85).portr("1E85"); // Dodgem only
map(0x1e86, 0x1e86).portr("1E86").nopw(); // Dodgem only
map(0x1f00, 0x1fff).rw(FUNC(zac2650_state::s2636_r), FUNC(zac2650_state::s2636_w)).share(m_s2636_0_ram);
map(0x1f00, 0x1fff).rw(FUNC(zac1b1120_state::s2636_r), FUNC(zac1b1120_state::s2636_w)).share(m_s2636_0_ram);
}
static INPUT_PORTS_START( tinvader )
@ -437,7 +441,7 @@ static INPUT_PORTS_START( dodgem )
INPUT_PORTS_END
void zac2650_state::palette(palette_device &palette) const
void zac1b1120_state::palette(palette_device &palette) const
{
palette.set_pen_color(0, rgb_t::black());
palette.set_pen_color(1, rgb_t::white());
@ -470,29 +474,26 @@ static const gfx_layout s2636_character =
};
static GFXDECODE_START( gfx_tinvader )
GFXDECODE_SCALE( "gfx1", 0, gfx_8x8x1, 0, 2, 3, 3 )
GFXDECODE_SCALE( nullptr, 0x1f00, s2636_character, 0, 2, 4, 3 ) // dynamic
GFXDECODE_SCALE( nullptr, 0x1f00, s2636_character, 0, 2, 8, 6 ) // dynamic
GFXDECODE_SCALE( "gfx1", 0, gfx_8x8x1, 0, 2, 3, 1 )
GFXDECODE_SCALE( nullptr, 0x1f00, s2636_character, 0, 2, 4, 1 ) // dynamic
GFXDECODE_SCALE( nullptr, 0x1f00, s2636_character, 0, 2, 8, 2 ) // dynamic
GFXDECODE_END
void zac2650_state::tinvader(machine_config &config)
void zac1b1120_state::tinvader(machine_config &config)
{
// basic machine hardware
s2650_device &maincpu(S2650(config, m_maincpu, 3'800'000 / 4));
maincpu.set_addrmap(AS_PROGRAM, &zac2650_state::main_map);
s2650_device &maincpu(S2650(config, m_maincpu, 15.625_MHz_XTAL / 16));
maincpu.set_addrmap(AS_PROGRAM, &zac1b1120_state::main_map);
maincpu.sense_handler().set(m_screen, FUNC(screen_device::vblank)).invert();
// video hardware
// video hardware (timings generated by an (overclocked) Signetics 2621 PAL Universal Sync Generator; screen refresh measured at 55Hz)
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_refresh_hz(55);
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(1041));
m_screen->set_size(30*24, 32*24);
m_screen->set_visarea(0, 719, 0, 767);
m_screen->set_screen_update(FUNC(zac2650_state::screen_update));
m_screen->set_raw(15.625_MHz_XTAL, 227 * 4, 0, 180 * 4, 312, 0, 256);
m_screen->set_screen_update(FUNC(zac1b1120_state::screen_update));
m_screen->set_palette(m_palette);
GFXDECODE(config, m_gfxdecode, m_palette, gfx_tinvader);
PALETTE(config, m_palette, FUNC(zac2650_state::palette), 4);
PALETTE(config, m_palette, FUNC(zac1b1120_state::palette), 4);
// sound hardware
SPEAKER(config, "mono").front_center();
@ -500,7 +501,18 @@ void zac2650_state::tinvader(machine_config &config)
S2636(config, m_s2636, 0).add_route(ALL_OUTPUTS, "mono", 0.25);
}
void zac2650_state::sound_w(uint8_t data)
void zac1b1120_state::dodgem(machine_config &config)
{
tinvader(config);
// XTAL value is different
m_maincpu->set_clock(14.318181_MHz_XTAL / 16);
m_screen->set_raw(14.318181_MHz_XTAL, 227 * 4, 0, 180 * 4, 312, 0, 256); // TBD: verify refresh rate
// TODO: sound board (different from The Invaders)
}
void zac1b1120_state::sound_w(uint8_t data)
{
// sounds are NOT the same as space invaders
@ -556,6 +568,6 @@ ROM_END
} // anonymous namespace
GAMEL( 1979?, tinv2650, 0, tinvader, tinvader, zac2650_state, empty_init, ROT270, "Zaccaria / Zelco", "The Invaders", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE, layout_tinv2650 )
GAME( 1979?, sia2650, tinv2650, tinvader, sinvader, zac2650_state, empty_init, ROT270, "bootleg (Sidam)", "Super Invader Attack (bootleg of The Invaders)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) // 1980?
GAME( 1979, dodgem, 0, tinvader, dodgem, zac2650_state, empty_init, ROT0, "Zaccaria", "Dodgem", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
GAMEL( 1979?, tinv2650, 0, tinvader, tinvader, zac1b1120_state, empty_init, ROT270, "Zaccaria / Zelco", "The Invaders", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE, layout_tinv2650 )
GAME( 1979?, sia2650, tinv2650, tinvader, sinvader, zac1b1120_state, empty_init, ROT270, "bootleg (Sidam)", "Super Invader Attack (bootleg of The Invaders)", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE ) // 1980?
GAME( 1979, dodgem, 0, dodgem, dodgem, zac1b1120_state, empty_init, ROT0, "Zaccaria", "Dodgem", MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )