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funkball: Implement timer (actual frequency unknown)

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This commit is contained in:
Aaron Giles 2021-07-15 00:27:31 -07:00
parent 61077d4ffb
commit ad8c8e53eb
1 changed files with 18 additions and 52 deletions
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70
src/mame/drivers/funkball.cpp
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@ -105,17 +105,19 @@ private:
uint32_t m_biu_ctrl_reg[256/4];
uint32_t flashbank_addr;
uint16_t m_latched_timer;
// devices
required_device<voodoo_1_device> m_voodoo;
required_shared_ptr<uint32_t> m_unk_ram;
required_device<address_map_bank_device> m_flashbank;
required_ioport_array<16> m_inputs;
required_ioport_array<14> m_inputs;
void flash_w (offs_t offset, uint32_t data, uint32_t mem_mask = ~0);
// void bios_ram_w(offs_t offset, uint8_t data);
uint8_t in_r(offs_t offset);
uint8_t timer_r(offs_t offset);
uint8_t funkball_config_reg_r();
void funkball_config_reg_w(uint8_t data);
@ -148,6 +150,19 @@ private:
void cx5510_pci_w(int function, int reg, uint32_t data, uint32_t mem_mask);
};
uint8_t funkball_state::timer_r(offs_t offset)
{
if (offset == 0)
{
m_latched_timer = machine().time().as_ticks(20000);
return m_latched_timer >> 8;
}
// the game polls this timer frequently; eat cycles as a cheap speedup
m_maincpu->eat_cycles(500);
return m_latched_timer;
}
void funkball_state::video_start()
{
}
@ -357,7 +372,8 @@ void funkball_state::funkball_io(address_map &map)
map(0x0360, 0x0363).w(FUNC(funkball_state::flash_w));
// map(0x0320, 0x0323).r(FUNC(funkball_state::test_r));
map(0x0360, 0x036f).r(FUNC(funkball_state::in_r)); // inputs
map(0x0360, 0x036d).r(FUNC(funkball_state::in_r)); // inputs
map(0x036e, 0x036f).r(FUNC(funkball_state::timer_r)); // inputs
}
static INPUT_PORTS_START( funkball )
@ -679,56 +695,6 @@ static INPUT_PORTS_START( funkball )
PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_START("IN.14")
PORT_DIPNAME( 0x01, 0x01, "14" )
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_START("IN.15")
PORT_DIPNAME( 0x01, 0x01, "15" )
PORT_DIPSETTING( 0x01, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x02, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x04, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x08, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x10, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x20, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x40, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
PORT_DIPSETTING( 0x80, DEF_STR( Off ) )
PORT_DIPSETTING( 0x00, DEF_STR( On ) )
INPUT_PORTS_END
void funkball_state::machine_start()