mirror of
https://github.com/holub/mame
synced 2025-04-20 15:32:45 +03:00
dogfgt: determine screen refresh rate from pcb video, small cleanup
This commit is contained in:
hap
parent
a249584c49
commit
7784bb5ad6
@ -7,12 +7,19 @@ Acrobatic Dog-Fight / 『バッテン・オハラのスチャラカ空中戦』
|
||||
|
||||
driver by Nicola Salmoria
|
||||
|
||||
TODO:
|
||||
- verify clocks: 1.5MHz AY clocks and 57.44Hz screen refresh rate are
|
||||
certain when compared to PCB video, 16 IRQs per frame is also certain
|
||||
- flipscreen dipswitch, manual says it's on bank 2 #8, probably not
|
||||
readable by software?
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
#include "emu.h"
|
||||
|
||||
#include "cpu/m6502/m6502.h"
|
||||
#include "machine/gen_latch.h"
|
||||
#include "machine/timer.h"
|
||||
#include "sound/ay8910.h"
|
||||
|
||||
#include "emupal.h"
|
||||
@ -82,6 +89,7 @@ private:
|
||||
uint8_t m_scroll[4]{};
|
||||
uint8_t m_lastflip = 0U;
|
||||
uint8_t m_lastpixcolor = 0U;
|
||||
|
||||
static constexpr uint8_t PIXMAP_COLOR_BASE = (16 + 32);
|
||||
static constexpr uint16_t BITMAPRAM_SIZE = 0x6000;
|
||||
|
||||
@ -91,13 +99,15 @@ private:
|
||||
void subirqtrigger_w(uint8_t data);
|
||||
void sub_irqack_w(uint8_t data);
|
||||
void soundcontrol_w(uint8_t data);
|
||||
TIMER_DEVICE_CALLBACK_MEMBER(interrupt);
|
||||
|
||||
void plane_select_w(uint8_t data);
|
||||
uint8_t bitmapram_r(offs_t offset);
|
||||
void internal_bitmapram_w(offs_t offset, uint8_t data);
|
||||
void bitmapram_w(offs_t offset, uint8_t data);
|
||||
void bgvideoram_w(offs_t offset, uint8_t data);
|
||||
void scroll_w(offs_t offset, uint8_t data);
|
||||
void _1800_w(uint8_t data);
|
||||
void control_w(uint8_t data);
|
||||
|
||||
TILE_GET_INFO_MEMBER(get_tile_info);
|
||||
void palette(palette_device &palette) const;
|
||||
@ -180,6 +190,60 @@ void dogfgt_state::video_start()
|
||||
}
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Display refresh
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
void dogfgt_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect)
|
||||
{
|
||||
for (int offs = 0; offs < m_spriteram.bytes(); offs += 4)
|
||||
{
|
||||
if (m_spriteram[offs] & 0x01)
|
||||
{
|
||||
int sx = m_spriteram[offs + 3];
|
||||
int sy = (240 - m_spriteram[offs + 2]) & 0xff;
|
||||
int flipx = m_spriteram[offs] & 0x04;
|
||||
int flipy = m_spriteram[offs] & 0x02;
|
||||
if (flip_screen())
|
||||
{
|
||||
sx = 240 - sx;
|
||||
sy = 240 - sy;
|
||||
flipx = !flipx;
|
||||
flipy = !flipy;
|
||||
}
|
||||
|
||||
m_gfxdecode->gfx(1)->transpen(bitmap, cliprect,
|
||||
m_spriteram[offs + 1] + ((m_spriteram[offs] & 0x30) << 4),
|
||||
(m_spriteram[offs] & 0x08) >> 3,
|
||||
flipx, flipy,
|
||||
sx, sy, 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
uint32_t dogfgt_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
|
||||
{
|
||||
if (m_lastflip != flip_screen() || m_lastpixcolor != m_pixcolor)
|
||||
{
|
||||
m_lastflip = flip_screen();
|
||||
m_lastpixcolor = m_pixcolor;
|
||||
|
||||
for (int offs = 0; offs < BITMAPRAM_SIZE; offs++)
|
||||
internal_bitmapram_w(offs, m_bitmapram[offs]);
|
||||
}
|
||||
|
||||
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
|
||||
|
||||
draw_sprites(bitmap, cliprect);
|
||||
|
||||
copybitmap_trans(bitmap, m_pixbitmap, 0, 0, 0, 0, cliprect, PIXMAP_COLOR_BASE + 8 * m_pixcolor);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Memory handlers
|
||||
@ -248,7 +312,7 @@ void dogfgt_state::scroll_w(offs_t offset, uint8_t data)
|
||||
m_bg_tilemap->set_scrolly(0, m_scroll[2] + 256 * m_scroll[3]);
|
||||
}
|
||||
|
||||
void dogfgt_state::_1800_w(uint8_t data)
|
||||
void dogfgt_state::control_w(uint8_t data)
|
||||
{
|
||||
// bits 0 and 1 are probably text color (not verified because PROM is missing)
|
||||
m_pixcolor = ((data & 0x01) << 1) | ((data & 0x02) >> 1);
|
||||
@ -265,61 +329,6 @@ void dogfgt_state::_1800_w(uint8_t data)
|
||||
}
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Display refresh
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
void dogfgt_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect)
|
||||
{
|
||||
for (int offs = 0; offs < m_spriteram.bytes(); offs += 4)
|
||||
{
|
||||
if (m_spriteram[offs] & 0x01)
|
||||
{
|
||||
int sx = m_spriteram[offs + 3];
|
||||
int sy = (240 - m_spriteram[offs + 2]) & 0xff;
|
||||
int flipx = m_spriteram[offs] & 0x04;
|
||||
int flipy = m_spriteram[offs] & 0x02;
|
||||
if (flip_screen())
|
||||
{
|
||||
sx = 240 - sx;
|
||||
sy = 240 - sy;
|
||||
flipx = !flipx;
|
||||
flipy = !flipy;
|
||||
}
|
||||
|
||||
m_gfxdecode->gfx(1)->transpen(bitmap, cliprect,
|
||||
m_spriteram[offs + 1] + ((m_spriteram[offs] & 0x30) << 4),
|
||||
(m_spriteram[offs] & 0x08) >> 3,
|
||||
flipx, flipy,
|
||||
sx, sy, 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
uint32_t dogfgt_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
|
||||
{
|
||||
if (m_lastflip != flip_screen() || m_lastpixcolor != m_pixcolor)
|
||||
{
|
||||
m_lastflip = flip_screen();
|
||||
m_lastpixcolor = m_pixcolor;
|
||||
|
||||
for (int offs = 0; offs < BITMAPRAM_SIZE; offs++)
|
||||
internal_bitmapram_w(offs, m_bitmapram[offs]);
|
||||
}
|
||||
|
||||
|
||||
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
|
||||
|
||||
draw_sprites(bitmap, cliprect);
|
||||
|
||||
copybitmap_trans(bitmap, m_pixbitmap, 0, 0, 0, 0, cliprect, PIXMAP_COLOR_BASE + 8 * m_pixcolor);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
void dogfgt_state::subirqtrigger_w(uint8_t data)
|
||||
{
|
||||
// bit 0 used but unknown
|
||||
@ -346,6 +355,21 @@ void dogfgt_state::soundcontrol_w(uint8_t data)
|
||||
}
|
||||
|
||||
|
||||
TIMER_DEVICE_CALLBACK_MEMBER(dogfgt_state::interrupt)
|
||||
{
|
||||
const int scanline = param;
|
||||
|
||||
// 16 interrupts per frame
|
||||
if ((scanline & 0xf) == 8 && scanline <= 248)
|
||||
m_maincpu->set_input_line(0, HOLD_LINE);
|
||||
}
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Address maps
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
void dogfgt_state::main_map(address_map &map)
|
||||
{
|
||||
@ -353,7 +377,7 @@ void dogfgt_state::main_map(address_map &map)
|
||||
map(0x0f80, 0x0fdf).writeonly().share(m_spriteram);
|
||||
map(0x1000, 0x17ff).w(FUNC(dogfgt_state::bgvideoram_w)).share(m_bgvideoram);
|
||||
map(0x1800, 0x1800).portr("P1");
|
||||
map(0x1800, 0x1800).w(FUNC(dogfgt_state::_1800_w)); // text color, flip screen & coin counters
|
||||
map(0x1800, 0x1800).w(FUNC(dogfgt_state::control_w));
|
||||
map(0x1810, 0x1810).portr("P2");
|
||||
map(0x1810, 0x1810).w(FUNC(dogfgt_state::subirqtrigger_w));
|
||||
map(0x1820, 0x1820).portr("DSW1");
|
||||
@ -376,6 +400,11 @@ void dogfgt_state::sub_map(address_map &map)
|
||||
}
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Input ports
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
static INPUT_PORTS_START( dogfgt )
|
||||
PORT_START("P1")
|
||||
@ -417,24 +446,14 @@ static INPUT_PORTS_START( dogfgt )
|
||||
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unused ) )
|
||||
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0xc0, 0x00, DEF_STR( Cabinet ) )
|
||||
PORT_DIPSETTING( 0x00, "Upright 1 Player" )
|
||||
PORT_DIPSETTING( 0x80, "Upright 2 Players" )
|
||||
PORT_DIPSETTING( 0x40, DEF_STR( Cocktail ) ) // "Cocktail 1 Player" - IMPOSSIBLE !
|
||||
PORT_DIPSETTING( 0xc0, DEF_STR( Cocktail ) ) // "Cocktail 2 Players"
|
||||
|
||||
|
||||
/* Manual shows:
|
||||
|
||||
Dip #7 TV-Screen
|
||||
OFF Table type
|
||||
ON Up-right type use
|
||||
Dip #8 Control Panel
|
||||
OFF Table type use
|
||||
ON Up-right use
|
||||
|
||||
There is a side note for these two: "Change both together"
|
||||
*/
|
||||
// 2 separate switches for upright/table cabinet, manual says to change both together
|
||||
PORT_DIPNAME( 0x40, 0x00, "Screen" )
|
||||
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
|
||||
PORT_DIPSETTING( 0x40, DEF_STR( Cocktail ) )
|
||||
PORT_DIPNAME( 0x80, 0x00, "Control Panel" )
|
||||
PORT_DIPSETTING( 0x00, DEF_STR( Upright ) )
|
||||
PORT_DIPSETTING( 0x80, DEF_STR( Cocktail ) )
|
||||
|
||||
PORT_START("DSW2")
|
||||
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 )
|
||||
@ -452,18 +471,15 @@ There is a side note for these two: "Change both together"
|
||||
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unused ) )
|
||||
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
|
||||
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("screen")
|
||||
|
||||
/* Manual shows:
|
||||
|
||||
Dip #8 TV-Screen
|
||||
OFF Normal
|
||||
ON Invert
|
||||
*/
|
||||
|
||||
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_CUSTOM ) PORT_VBLANK("screen")
|
||||
INPUT_PORTS_END
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
GFX layouts
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
static const gfx_layout tilelayout =
|
||||
{
|
||||
@ -497,6 +513,11 @@ static GFXDECODE_START( gfx_dogfgt )
|
||||
GFXDECODE_END
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Machine initialization
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
void dogfgt_state::machine_start()
|
||||
{
|
||||
@ -525,21 +546,18 @@ void dogfgt_state::machine_reset()
|
||||
void dogfgt_state::dogfgt(machine_config &config)
|
||||
{
|
||||
// basic machine hardware
|
||||
M6502(config, m_maincpu, 12_MHz_XTAL / 8); // 1.5 MHz ???? divisor not verified
|
||||
M6502(config, m_maincpu, 12_MHz_XTAL / 8); // 1.5MHz?
|
||||
m_maincpu->set_addrmap(AS_PROGRAM, &dogfgt_state::main_map);
|
||||
m_maincpu->set_periodic_int(FUNC(dogfgt_state::irq0_line_hold), attotime::from_hz(16 * 60)); // ? controls music tempo
|
||||
TIMER(config, "scantimer").configure_scanline(FUNC(dogfgt_state::interrupt), "screen", 0, 1);
|
||||
|
||||
M6502(config, m_subcpu, 12_MHz_XTAL / 8); // 1.5 MHz ???? divisor not verified
|
||||
M6502(config, m_subcpu, 12_MHz_XTAL / 8); // 1.5MHz?
|
||||
m_subcpu->set_addrmap(AS_PROGRAM, &dogfgt_state::sub_map);
|
||||
|
||||
config.set_maximum_quantum(attotime::from_hz(6000));
|
||||
|
||||
// video hardware
|
||||
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
|
||||
m_screen->set_refresh_hz(60);
|
||||
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // not accurate
|
||||
m_screen->set_size(32*8, 32*8);
|
||||
m_screen->set_visarea(0*8, 32*8-1, 1*8, 31*8-1);
|
||||
m_screen->set_raw(12_MHz_XTAL / 2, 384, 0, 256, 272, 8, 248); // ~57.44Hz
|
||||
m_screen->set_screen_update(FUNC(dogfgt_state::screen_update));
|
||||
m_screen->set_palette(m_palette);
|
||||
|
||||
@ -551,11 +569,16 @@ void dogfgt_state::dogfgt(machine_config &config)
|
||||
|
||||
GENERIC_LATCH_8(config, m_soundlatch);
|
||||
|
||||
YM2149(config, m_ay[0], 12_MHz_XTAL / 8).add_route(ALL_OUTPUTS, "mono", 0.30); // 1.5 MHz ???? divisor not verified
|
||||
YM2149(config, m_ay[1], 12_MHz_XTAL / 8).add_route(ALL_OUTPUTS, "mono", 0.30); // 1.5 MHz ???? divisor not verified
|
||||
YM2149(config, m_ay[0], 12_MHz_XTAL / 8).add_route(ALL_OUTPUTS, "mono", 0.30); // 1.5MHz
|
||||
YM2149(config, m_ay[1], 12_MHz_XTAL / 8).add_route(ALL_OUTPUTS, "mono", 0.30); // "
|
||||
}
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
ROMs
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
ROM_START( dogfgt )
|
||||
ROM_REGION( 0x10000, "maincpu", 0 )
|
||||
@ -662,6 +685,12 @@ ROM_END
|
||||
} // anonymous namespace
|
||||
|
||||
|
||||
/***************************************************************************
|
||||
|
||||
Game drivers
|
||||
|
||||
***************************************************************************/
|
||||
|
||||
GAME( 1984, dogfgt, 0, dogfgt, dogfgt, dogfgt_state, empty_init, ROT0, "Technos Japan", "Acrobatic Dog-Fight", MACHINE_SUPPORTS_SAVE )
|
||||
GAME( 1985, dogfgtu, dogfgt, dogfgt, dogfgt, dogfgt_state, empty_init, ROT0, "Technos Japan (Data East USA, Inc. license)", "Acrobatic Dog-Fight (USA)", MACHINE_SUPPORTS_SAVE )
|
||||
GAME( 1984, dogfgtj, dogfgt, dogfgt, dogfgt, dogfgt_state, empty_init, ROT0, "Technos Japan", "But-ten Ohara's Suit-Cha Luck-a Dog-Fight (Japan)", MACHINE_SUPPORTS_SAVE )
|
||||
|
||||
@ -464,11 +464,11 @@ TIMER_DEVICE_CALLBACK_MEMBER(renegade_state::interrupt)
|
||||
{
|
||||
int const scanline = param;
|
||||
|
||||
// NMI 8 lines before vsync
|
||||
// NMI: 8 lines before vsync
|
||||
if (scanline == 265)
|
||||
m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
|
||||
|
||||
// IRQ 16 clocks per frame: once every 16 lines, but increases to 24 lines during vblank
|
||||
// IRQ: 16 clocks per frame: once every 16 lines, but increases to 24 lines during vblank
|
||||
// (lines 16,40,56,72,88,104,120,136,152,168,184,200,216,232,248,264)
|
||||
if (scanline == 0x10 || (scanline > 0x20 && (scanline & 0xf) == 8))
|
||||
m_maincpu->set_input_line(0, ASSERT_LINE);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user