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Diffstat (limited to 'src/mess/machine/c64/4tba.c')
-rw-r--r-- | src/mess/machine/c64/4tba.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/mess/machine/c64/4tba.c b/src/mess/machine/c64/4tba.c new file mode 100644 index 00000000000..26ff6db03fb --- /dev/null +++ b/src/mess/machine/c64/4tba.c @@ -0,0 +1,110 @@ +/********************************************************************** + + Starbyte Software Tie Break Adaptor emulation + + http://hitmen.c02.at/html/hardware.html + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +**********************************************************************/ + +#include "4tba.h" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type C64_4TBA = &device_creator<c64_4tba_device>; + + +//------------------------------------------------- +// INPUT_PORTS( c64_4tba ) +//------------------------------------------------- + +static INPUT_PORTS_START( c64_4tba ) + PORT_START("SP2") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_WRITE_LINE_DEVICE_MEMBER(DEVICE_SELF_OWNER, c64_user_port_device, cia_sp2_w) + + PORT_START("PB") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) + + PORT_START("PA2") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) +INPUT_PORTS_END + + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +ioport_constructor c64_4tba_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( c64_4tba ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// c64_4tba_device - constructor +//------------------------------------------------- + +c64_4tba_device::c64_4tba_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, C64_4TBA, "C64 Tie Break Adapter", tag, owner, clock, "c64_4tba", __FILE__), + device_c64_user_port_interface(mconfig, *this), + m_pb(*this, "PB"), + m_pa2(*this, "PA2") +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void c64_4tba_device::device_start() +{ +} + + +//------------------------------------------------- +// c64_pb_r - port B read +//------------------------------------------------- + +UINT8 c64_4tba_device::c64_pb_r(address_space &space, offs_t offset) +{ + return m_pb->read(); +} + + +//------------------------------------------------- +// c64_pb_w - port B write +//------------------------------------------------- + +int c64_4tba_device::c64_pa2_r() +{ + return BIT(m_pa2->read(), 0); +} + + +//------------------------------------------------- +// c64_cnt1_w - CNT 1 write +//------------------------------------------------- + +void c64_4tba_device::c64_cnt1_w(int level) +{ + m_slot->cia_cnt2_w(level); +} |