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Fixed Counter Steer booting [Angelo Salese]

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* Spotted Slave CPU bus request line;
* Fixed address line swapping for Slave CPU area at 0x2000-0x2fff;

(out-of-whatsnew: needs NMI masking for Slave CPU)
This commit is contained in:
angelosa 2015-09-22 22:29:46 +02:00
parent c574b8d0bf
commit 085082d879
1 changed files with 21 additions and 2 deletions
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23
src/mame/drivers/cntsteer.c
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@ -68,6 +68,7 @@ public:
/* misc */
int m_nmimask; // zerotrgt only
bool m_sub_nmimask; // counter steer only
/* devices */
required_device<cpu_device> m_maincpu;
@ -81,6 +82,7 @@ public:
DECLARE_WRITE8_MEMBER(cntsteer_foreground_vram_w);
DECLARE_WRITE8_MEMBER(cntsteer_foreground_attr_w);
DECLARE_WRITE8_MEMBER(cntsteer_background_w);
DECLARE_READ8_MEMBER(cntsteer_background_mirror_r);
DECLARE_WRITE8_MEMBER(gekitsui_sub_irq_ack);
DECLARE_WRITE8_MEMBER(cntsteer_sound_w);
DECLARE_WRITE8_MEMBER(zerotrgt_ctrl_w);
@ -102,6 +104,7 @@ public:
DECLARE_PALETTE_INIT(zerotrgt);
UINT32 screen_update_cntsteer(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
UINT32 screen_update_zerotrgt(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
INTERRUPT_GEN_MEMBER(subcpu_vblank_irq);
INTERRUPT_GEN_MEMBER(sound_interrupt);
void zerotrgt_draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect );
void cntsteer_draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect );
@ -438,6 +441,9 @@ WRITE8_MEMBER(cntsteer_state::cntsteer_vregs_w)
case 1: m_scrollx = data; break;
case 2: m_bg_bank = (data & 0x01) << 8;
m_bg_color_bank = (data & 6) >> 1;
// TODO: of course this just inibits bus request for master.
m_maincpu->set_input_line(INPUT_LINE_HALT, data & 4 ? CLEAR_LINE : ASSERT_LINE);
m_bg_tilemap->mark_all_dirty();
break;
case 3: m_rotation_sign = (data & 7);
@ -467,6 +473,12 @@ WRITE8_MEMBER(cntsteer_state::cntsteer_background_w)
m_bg_tilemap->mark_tile_dirty(offset);
}
/* checks area 0x2000-0x2fff with this address config. */
READ8_MEMBER(cntsteer_state::cntsteer_background_mirror_r)
{
return m_videoram2[BITSWAP16(offset,15,14,13,12,5,4,3,2,1,0,11,10,9,8,7,6)];
}
/*************************************
*
* CPU comms
@ -585,7 +597,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( cntsteer_cpu2_map, AS_PROGRAM, 8, cntsteer_state )
AM_RANGE(0x0000, 0x0fff) AM_RAM AM_SHARE("share1")
AM_RANGE(0x1000, 0x1fff) AM_RAM_WRITE(cntsteer_background_w) AM_SHARE("videoram2")
AM_RANGE(0x2000, 0x2fff) AM_RAM_WRITE(cntsteer_background_w) AM_SHARE("videoram2")
AM_RANGE(0x2000, 0x2fff) AM_READWRITE(cntsteer_background_mirror_r,cntsteer_background_w)
AM_RANGE(0x3000, 0x3000) AM_READ_PORT("DSW0")
AM_RANGE(0x3001, 0x3001) AM_READ(cntsteer_adx_r)
AM_RANGE(0x3002, 0x3002) AM_READ_PORT("P1")
@ -605,6 +617,13 @@ WRITE8_MEMBER(cntsteer_state::nmimask_w)
m_nmimask = data & 0x80;
}
INTERRUPT_GEN_MEMBER(cntsteer_state::subcpu_vblank_irq)
{
//popmessage("%02x",m_disable_roz);
//if (m_disable_roz == 8)
//device.execute().set_input_line(INPUT_LINE_NMI, PULSE_LINE);
}
INTERRUPT_GEN_MEMBER(cntsteer_state::sound_interrupt)
{
if (!m_nmimask)
@ -879,7 +898,7 @@ static MACHINE_CONFIG_START( cntsteer, cntsteer_state )
MCFG_CPU_ADD("subcpu", M6809, 2000000) /* ? */
MCFG_CPU_PROGRAM_MAP(cntsteer_cpu2_map)
// MCFG_DEVICE_DISABLE()
MCFG_CPU_VBLANK_INT_DRIVER("screen", cntsteer_state, nmi_line_pulse) /* ? */
MCFG_CPU_VBLANK_INT_DRIVER("screen", cntsteer_state, subcpu_vblank_irq) /* ? */
MCFG_CPU_ADD("audiocpu", M6502, 1500000) /* ? */
MCFG_CPU_PROGRAM_MAP(sound_map)