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supertnk: Add provisional screen parameters; make interrupt acknowledgment more plausible (nw)

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This commit is contained in:
AJR 2018-10-27 10:05:21 -04:00
parent 7b5e4823fb
commit d6dcb333c9
1 changed files with 16 additions and 18 deletions
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34
src/mame/drivers/supertnk.cpp
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@ -130,8 +130,8 @@ public:
private:
DECLARE_WRITE_LINE_MEMBER(bankswitch_0_w);
DECLARE_WRITE_LINE_MEMBER(bankswitch_1_w);
DECLARE_WRITE8_MEMBER(interrupt_ack_w);
DECLARE_WRITE_LINE_MEMBER(watchdog_enable_w);
DECLARE_WRITE_LINE_MEMBER(interrupt_enable_w);
DECLARE_WRITE_LINE_MEMBER(watchdog_reset_w);
DECLARE_WRITE8_MEMBER(videoram_w);
DECLARE_READ8_MEMBER(videoram_r);
DECLARE_WRITE_LINE_MEMBER(bitplane_select_0_w);
@ -149,6 +149,7 @@ private:
uint8_t m_rom_bank;
uint8_t m_bitplane_select;
pen_t m_pens[NUM_PENS];
bool m_interrupt_enable;
required_device<cpu_device> m_maincpu;
required_device<watchdog_timer_device> m_watchdog;
@ -190,20 +191,22 @@ WRITE_LINE_MEMBER(supertnk_state::bankswitch_1_w)
WRITE_LINE_MEMBER(supertnk_state::vblank_interrupt)
{
if (state)
if (state && m_interrupt_enable)
m_maincpu->set_input_line(INT_9980A_LEVEL4, ASSERT_LINE);
}
WRITE8_MEMBER(supertnk_state::interrupt_ack_w)
WRITE_LINE_MEMBER(supertnk_state::interrupt_enable_w)
{
m_maincpu->set_input_line(INT_9980A_LEVEL4, CLEAR_LINE);
m_interrupt_enable = state;
if (!state)
m_maincpu->set_input_line(INT_9980A_LEVEL4, CLEAR_LINE);
}
WRITE_LINE_MEMBER(supertnk_state::watchdog_enable_w)
WRITE_LINE_MEMBER(supertnk_state::watchdog_reset_w)
{
m_watchdog->watchdog_enable(state);
m_watchdog->watchdog_enable(!state);
}
@ -345,7 +348,6 @@ void supertnk_state::supertnk_io_map(address_map &map)
{
map(0x0000, 0x0000).nopw();
map(0x0400, 0x0407).w("outlatch", FUNC(ls259_device::write_d0));
map(0x0406, 0x0406).w(FUNC(supertnk_state::interrupt_ack_w));
}
@ -449,20 +451,16 @@ MACHINE_CONFIG_START(supertnk_state::supertnk)
outlatch.q_out_cb<1>().set(FUNC(supertnk_state::bitplane_select_1_w));
outlatch.q_out_cb<2>().set(FUNC(supertnk_state::bankswitch_0_w));
outlatch.q_out_cb<4>().set(FUNC(supertnk_state::bankswitch_1_w));
//outlatch.q_out_cb<6>().set(FUNC(supertnk_state::interrupt_enable_w));
outlatch.q_out_cb<7>().set(FUNC(supertnk_state::watchdog_enable_w));
outlatch.q_out_cb<6>().set(FUNC(supertnk_state::watchdog_reset_w)).invert();
outlatch.q_out_cb<7>().set(FUNC(supertnk_state::interrupt_enable_w));
WATCHDOG_TIMER(config, m_watchdog);
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_SIZE(32*8, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 32*8-1)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
MCFG_SCREEN_UPDATE_DRIVER(supertnk_state, screen_update)
MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(*this, supertnk_state, vblank_interrupt))
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_raw(20.79_MHz_XTAL / 4, 330, 0, 32*8, 315, 0, 32*8); // parameters guessed
screen.set_screen_update(FUNC(supertnk_state::screen_update));
screen.screen_vblank().set(FUNC(supertnk_state::vblank_interrupt));
/* audio hardware */
SPEAKER(config, "mono").front_center();