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mirror of https://github.com/holub/mame synced 2025-04-26 18:23:08 +03:00
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Fixed the coin counter; added a note about it, corrected bit 6 of DSW2 (this allows both coins to be recognized), also vblank is active low

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This commit is contained in:
darq 2016-12-08 23:59:51 +01:00
parent d73825f393
commit cc1b8a5fb0
2 changed files with 27 additions and 5 deletions
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27
src/mame/drivers/shootout.cpp
View File

@ -23,7 +23,6 @@
TODO:
- Fix coin counter
- Lots of unmapped memory reads
*******************************************************************************/
@ -69,9 +68,24 @@ WRITE8_MEMBER(shootout_state::flipscreen_w)
flip_screen_set(data & 0x01);
}
/*
This is actually a 'real' counter... the first write is always 0x40, then when a coin is inserted the game starts to count from 0x01,
then it counts from 0x02 to 0x09 but strangely it skips the 'hexadecimal letters'... so from 0x09 it goes to
0x10, 0x11, 0x12, ...0x19, 0x20, and so on...
The game counts up to 0x99, after that, 0x99 is always written...
On the shootoutj and shootoutb sets, it works as above but it counts up to 0x09 instead of 0x99.
*/
WRITE8_MEMBER(shootout_state::coincounter_w)
{
machine().bookkeeping().coin_counter_w(0, data);
if (data != m_ccnt_old_val)
{
// Do a coin pulse
machine().bookkeeping().coin_counter_w(0, 0);
machine().bookkeeping().coin_counter_w(0, 1);
m_ccnt_old_val = data;
}
}
/*******************************************************************************/
@ -182,8 +196,8 @@ static INPUT_PORTS_START( shootout )
PORT_DIPSETTING( 0x20, DEF_STR( Normal ) )
PORT_DIPSETTING( 0x10, DEF_STR( Hard ) )
PORT_DIPSETTING( 0x00, DEF_STR( Very_Hard ) )
PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SPECIAL ) /* this is set when either coin is inserted */
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("screen")
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SPECIAL ) // This needs to be low to allows both coins to be accepted...
PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_CUSTOM ) PORT_VBLANK("screen")
INPUT_PORTS_END
static INPUT_PORTS_START( shootouj )
@ -240,7 +254,10 @@ static GFXDECODE_START( shootout )
GFXDECODE_ENTRY( "gfx3", 0, tile_layout, 0, 16 ) /* tiles */
GFXDECODE_END
void shootout_state::machine_reset ()
{
m_ccnt_old_val = 0x40;
}
static MACHINE_CONFIG_START( shootout, shootout_state )

5
src/mame/includes/shootout.h
View File

@ -29,7 +29,9 @@ public:
tilemap_t *m_background;
tilemap_t *m_foreground;
int m_bFlicker;
int m_ccnt_old_val;
DECLARE_WRITE8_MEMBER(bankswitch_w);
DECLARE_READ8_MEMBER(sound_cpu_command_r);
@ -42,7 +44,10 @@ public:
DECLARE_INPUT_CHANGED_MEMBER(coin_inserted);
DECLARE_DRIVER_INIT(shootout);
virtual void machine_reset() override;
virtual void video_start() override;
DECLARE_PALETTE_INIT(shootout);
TILE_GET_INFO_MEMBER(get_bg_tile_info);