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bit 3 of master CPU controls reset line for slave. Adds start-up sequence but still hangs afterwards.

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This commit is contained in:
angelosa 2015-10-14 19:38:35 +02:00
parent 9069e83f96
commit 70e6da40eb
1 changed files with 8 additions and 6 deletions
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14
src/mame/drivers/cntsteer.c
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@ -451,6 +451,7 @@ WRITE8_MEMBER(cntsteer_state::cntsteer_vregs_w)
break; break;
case 3: m_rotation_sign = (data & 7); case 3: m_rotation_sign = (data & 7);
m_disable_roz = (~data & 0x08); m_disable_roz = (~data & 0x08);
m_maincpu->set_input_line(INPUT_LINE_RESET, data & 8 ? CLEAR_LINE : ASSERT_LINE);
m_scrolly_hi = (data & 0x30) << 4; m_scrolly_hi = (data & 0x30) << 4;
m_scrollx_hi = (data & 0xc0) << 2; m_scrollx_hi = (data & 0xc0) << 2;
break; break;
@ -630,8 +631,8 @@ INTERRUPT_GEN_MEMBER(cntsteer_state::subcpu_vblank_irq)
// That's my best guess so far about how Slave is supposed to stop execution on Master CPU, the lack of any realistic write // That's my best guess so far about how Slave is supposed to stop execution on Master CPU, the lack of any realistic write
// between these operations brings us to this. // between these operations brings us to this.
// Game currently returns error on MIX CPU RAM because halt-ing BACK CPU doesn't happen when it should of course ... // Game currently returns error on MIX CPU RAM because halt-ing BACK CPU doesn't happen when it should of course ...
UINT8 dp_r = (UINT8)device.state().state_int(M6809_DP); // UINT8 dp_r = (UINT8)device.state().state_int(M6809_DP);
m_maincpu->set_input_line(INPUT_LINE_HALT, dp_r ? ASSERT_LINE : CLEAR_LINE); // m_maincpu->set_input_line(INPUT_LINE_HALT, dp_r ? ASSERT_LINE : CLEAR_LINE);
} }
INTERRUPT_GEN_MEMBER(cntsteer_state::sound_interrupt) INTERRUPT_GEN_MEMBER(cntsteer_state::sound_interrupt)
@ -876,7 +877,7 @@ MACHINE_START_MEMBER(cntsteer_state,zerotrgt)
} }
MACHINE_RESET_MEMBER(cntsteer_state,cntsteer) MACHINE_RESET_MEMBER(cntsteer_state,zerotrgt)
{ {
m_flipscreen = 0; m_flipscreen = 0;
m_bg_bank = 0; m_bg_bank = 0;
@ -889,13 +890,14 @@ MACHINE_RESET_MEMBER(cntsteer_state,cntsteer)
m_bg_color_bank = 0; m_bg_color_bank = 0;
m_disable_roz = 0; m_disable_roz = 0;
m_nmimask = 0;
} }
MACHINE_RESET_MEMBER(cntsteer_state,zerotrgt) MACHINE_RESET_MEMBER(cntsteer_state,cntsteer)
{ {
m_nmimask = 0; m_maincpu->set_input_line(INPUT_LINE_RESET, ASSERT_LINE);
MACHINE_RESET_CALL_MEMBER(cntsteer); MACHINE_RESET_CALL_MEMBER(zerotrgt);
} }
static MACHINE_CONFIG_START( cntsteer, cntsteer_state ) static MACHINE_CONFIG_START( cntsteer, cntsteer_state )