diff options
Diffstat (limited to 'src/mame/drivers/sprint4.cpp')
-rw-r--r-- | src/mame/drivers/sprint4.cpp | 97 |
1 files changed, 53 insertions, 44 deletions
diff --git a/src/mame/drivers/sprint4.cpp b/src/mame/drivers/sprint4.cpp index 2b022933895..86eba1f4882 100644 --- a/src/mame/drivers/sprint4.cpp +++ b/src/mame/drivers/sprint4.cpp @@ -79,11 +79,9 @@ TIMER_CALLBACK_MEMBER(sprint4_state::nmi_callback) static_cast<uint8_t>(ioport("LEVER4")->read()) }; - int i; - /* emulation of steering wheels isn't very accurate */ - for (i = 0; i < 4; i++) + for (int i = 0; i < 4; i++) { signed char delta = wheel[i] - m_last_wheel[i]; @@ -120,13 +118,26 @@ TIMER_CALLBACK_MEMBER(sprint4_state::nmi_callback) if (ioport("IN0")->read() & 0x40) m_maincpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE); - timer_set(m_screen->time_until_pos(scanline), TIMER_NMI, scanline); + m_nmi_timer->adjust(m_screen->time_until_pos(scanline), scanline); +} + + +void sprint4_state::machine_start() +{ + m_nmi_timer = timer_alloc(TIMER_NMI); + + save_item(NAME(m_da_latch)); + save_item(NAME(m_steer_FF1)); + save_item(NAME(m_steer_FF2)); + save_item(NAME(m_gear)); + save_item(NAME(m_last_wheel)); + save_item(NAME(m_collision)); } void sprint4_state::machine_reset() { - timer_set(m_screen->time_until_pos(32), TIMER_NMI, 32); + m_nmi_timer->adjust(m_screen->time_until_pos(32), 32); memset(m_steer_FF1, 0, sizeof m_steer_FF1); memset(m_steer_FF2, 0, sizeof m_steer_FF2); @@ -140,96 +151,94 @@ void sprint4_state::machine_reset() } -READ8_MEMBER(sprint4_state::sprint4_wram_r) +READ8_MEMBER(sprint4_state::wram_r) { - uint8_t *videoram = m_videoram; - return videoram[0x380 + offset]; + return m_videoram[0x380 + offset]; } -READ8_MEMBER(sprint4_state::sprint4_analog_r) +READ8_MEMBER(sprint4_state::analog_r) { return (ioport("ANALOG")->read() << (~offset & 7)) & 0x80; } -READ8_MEMBER(sprint4_state::sprint4_coin_r) +READ8_MEMBER(sprint4_state::coin_r) { return (ioport("COIN")->read() << (~offset & 7)) & 0x80; } -READ8_MEMBER(sprint4_state::sprint4_collision_r) +READ8_MEMBER(sprint4_state::collision_r) { return (ioport("COLLISION")->read() << (~offset & 7)) & 0x80; } -READ8_MEMBER(sprint4_state::sprint4_options_r) +READ8_MEMBER(sprint4_state::options_r) { return (ioport("DIP")->read() >> (2 * (offset & 3))) & 3; } -WRITE8_MEMBER(sprint4_state::sprint4_wram_w) +WRITE8_MEMBER(sprint4_state::wram_w) { - uint8_t *videoram = m_videoram; - videoram[0x380 + offset] = data; + m_videoram[0x380 + offset] = data; } -WRITE8_MEMBER(sprint4_state::sprint4_collision_reset_w) +WRITE8_MEMBER(sprint4_state::collision_reset_w) { m_collision[(offset >> 1) & 3] = 0; } -WRITE8_MEMBER(sprint4_state::sprint4_da_latch_w) +WRITE8_MEMBER(sprint4_state::da_latch_w) { m_da_latch = data & 15; } -WRITE8_MEMBER(sprint4_state::sprint4_lamp_w) +WRITE8_MEMBER(sprint4_state::lamp_w) { output().set_led_value((offset >> 1) & 3, offset & 1); } #ifdef UNUSED_FUNCTION -WRITE8_MEMBER(sprint4_state::sprint4_lockout_w) +WRITE8_MEMBER(sprint4_state::lockout_w) { machine().bookkeeping().coin_lockout_global_w(~offset & 1); } #endif -WRITE8_MEMBER(sprint4_state::sprint4_screech_1_w) +WRITE8_MEMBER(sprint4_state::screech_1_w) { m_discrete->write(space, SPRINT4_SCREECH_EN_1, offset & 1); } -WRITE8_MEMBER(sprint4_state::sprint4_screech_2_w) +WRITE8_MEMBER(sprint4_state::screech_2_w) { m_discrete->write(space, SPRINT4_SCREECH_EN_2, offset & 1); } -WRITE8_MEMBER(sprint4_state::sprint4_screech_3_w) +WRITE8_MEMBER(sprint4_state::screech_3_w) { m_discrete->write(space, SPRINT4_SCREECH_EN_3, offset & 1); } -WRITE8_MEMBER(sprint4_state::sprint4_screech_4_w) +WRITE8_MEMBER(sprint4_state::screech_4_w) { m_discrete->write(space, SPRINT4_SCREECH_EN_4, offset & 1); } -WRITE8_MEMBER(sprint4_state::sprint4_bang_w) +WRITE8_MEMBER(sprint4_state::bang_w) { m_discrete->write(space, SPRINT4_BANG_DATA, data & 0x0f); } -WRITE8_MEMBER(sprint4_state::sprint4_attract_w) +WRITE8_MEMBER(sprint4_state::attract_w) { m_discrete->write(space, SPRINT4_ATTRACT_EN, data & 1); } @@ -239,27 +248,27 @@ static ADDRESS_MAP_START( sprint4_cpu_map, AS_PROGRAM, 8, sprint4_state ) ADDRESS_MAP_GLOBAL_MASK(0x3fff) - AM_RANGE(0x0080, 0x00ff) AM_MIRROR(0x700) AM_READWRITE(sprint4_wram_r, sprint4_wram_w) - AM_RANGE(0x0800, 0x0bff) AM_MIRROR(0x400) AM_RAM_WRITE(sprint4_video_ram_w) AM_SHARE("videoram") + AM_RANGE(0x0080, 0x00ff) AM_MIRROR(0x700) AM_READWRITE(wram_r, wram_w) + AM_RANGE(0x0800, 0x0bff) AM_MIRROR(0x400) AM_RAM_WRITE(video_ram_w) AM_SHARE("videoram") - AM_RANGE(0x0000, 0x0007) AM_MIRROR(0x718) AM_READ(sprint4_analog_r) - AM_RANGE(0x0020, 0x0027) AM_MIRROR(0x718) AM_READ(sprint4_coin_r) - AM_RANGE(0x0040, 0x0047) AM_MIRROR(0x718) AM_READ(sprint4_collision_r) - AM_RANGE(0x0060, 0x0063) AM_MIRROR(0x71c) AM_READ(sprint4_options_r) + AM_RANGE(0x0000, 0x0007) AM_MIRROR(0x718) AM_READ(analog_r) + AM_RANGE(0x0020, 0x0027) AM_MIRROR(0x718) AM_READ(coin_r) + AM_RANGE(0x0040, 0x0047) AM_MIRROR(0x718) AM_READ(collision_r) + AM_RANGE(0x0060, 0x0063) AM_MIRROR(0x71c) AM_READ(options_r) AM_RANGE(0x1000, 0x17ff) AM_READ_PORT("IN0") AM_RANGE(0x1800, 0x1fff) AM_READ_PORT("IN1") - AM_RANGE(0x0000, 0x0000) AM_MIRROR(0x71f) AM_WRITE(sprint4_attract_w) - AM_RANGE(0x0020, 0x0027) AM_MIRROR(0x718) AM_WRITE(sprint4_collision_reset_w) - AM_RANGE(0x0040, 0x0041) AM_MIRROR(0x718) AM_WRITE(sprint4_da_latch_w) - AM_RANGE(0x0042, 0x0043) AM_MIRROR(0x718) AM_WRITE(sprint4_bang_w) + AM_RANGE(0x0000, 0x0000) AM_MIRROR(0x71f) AM_WRITE(attract_w) + AM_RANGE(0x0020, 0x0027) AM_MIRROR(0x718) AM_WRITE(collision_reset_w) + AM_RANGE(0x0040, 0x0041) AM_MIRROR(0x718) AM_WRITE(da_latch_w) + AM_RANGE(0x0042, 0x0043) AM_MIRROR(0x718) AM_WRITE(bang_w) AM_RANGE(0x0044, 0x0045) AM_MIRROR(0x718) AM_DEVWRITE("watchdog", watchdog_timer_device, reset_w) - AM_RANGE(0x0060, 0x0067) AM_MIRROR(0x710) AM_WRITE(sprint4_lamp_w) - AM_RANGE(0x0068, 0x0069) AM_MIRROR(0x710) AM_WRITE(sprint4_screech_1_w) - AM_RANGE(0x006a, 0x006b) AM_MIRROR(0x710) AM_WRITE(sprint4_screech_2_w) - AM_RANGE(0x006c, 0x006d) AM_MIRROR(0x710) AM_WRITE(sprint4_screech_3_w) - AM_RANGE(0x006e, 0x006f) AM_MIRROR(0x710) AM_WRITE(sprint4_screech_4_w) + AM_RANGE(0x0060, 0x0067) AM_MIRROR(0x710) AM_WRITE(lamp_w) + AM_RANGE(0x0068, 0x0069) AM_MIRROR(0x710) AM_WRITE(screech_1_w) + AM_RANGE(0x006a, 0x006b) AM_MIRROR(0x710) AM_WRITE(screech_2_w) + AM_RANGE(0x006c, 0x006d) AM_MIRROR(0x710) AM_WRITE(screech_3_w) + AM_RANGE(0x006e, 0x006f) AM_MIRROR(0x710) AM_WRITE(screech_4_w) AM_RANGE(0x2000, 0x27ff) AM_NOP /* diagnostic ROM */ AM_RANGE(0x2800, 0x3fff) AM_ROM @@ -412,8 +421,8 @@ static MACHINE_CONFIG_START( sprint4, sprint4_state ) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, 0, 256, VTOTAL, 0, 224) - MCFG_SCREEN_UPDATE_DRIVER(sprint4_state, screen_update_sprint4) - MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(sprint4_state, screen_vblank_sprint4)) + MCFG_SCREEN_UPDATE_DRIVER(sprint4_state, screen_update) + MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(sprint4_state, screen_vblank)) MCFG_SCREEN_PALETTE("palette") MCFG_GFXDECODE_ADD("gfxdecode", "palette", sprint4) @@ -472,5 +481,5 @@ ROM_START( sprint4a ) ROM_END -GAME( 1977, sprint4, 0, sprint4, sprint4, driver_device, 0, ROT180, "Atari", "Sprint 4 (set 1)", 0 ) /* large cars */ -GAME( 1977, sprint4a, sprint4, sprint4, sprint4, driver_device, 0, ROT180, "Atari", "Sprint 4 (set 2)", 0 ) /* small cars */ +GAME( 1977, sprint4, 0, sprint4, sprint4, driver_device, 0, ROT180, "Atari", "Sprint 4 (set 1)", MACHINE_SUPPORTS_SAVE ) /* large cars */ +GAME( 1977, sprint4a, sprint4, sprint4, sprint4, driver_device, 0, ROT180, "Atari", "Sprint 4 (set 2)", MACHINE_SUPPORTS_SAVE ) /* small cars */ |