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3722e8ff14
(MESS) c64: Fixed IDE64 cartridge video corruption. (nw) (MESS) Added paddles and light pen VCS control devices. [Curt Coder]
139 lines
5.2 KiB
C
139 lines
5.2 KiB
C
/**********************************************************************
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Commodore VIC-20 User Port emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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#include "machine/vic20user.h"
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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const device_type VIC20_USER_PORT = &device_creator<vic20_user_port_device>;
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//**************************************************************************
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// CARD INTERFACE
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//**************************************************************************
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//-------------------------------------------------
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// device_vic20_user_port_interface - constructor
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//-------------------------------------------------
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device_vic20_user_port_interface::device_vic20_user_port_interface(const machine_config &mconfig, device_t &device)
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: device_slot_card_interface(mconfig,device)
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{
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m_slot = dynamic_cast<vic20_user_port_device *>(device.owner());
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}
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//-------------------------------------------------
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// ~device_vic20_user_port_interface - destructor
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//-------------------------------------------------
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device_vic20_user_port_interface::~device_vic20_user_port_interface()
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{
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// vic20_user_port_device - constructor
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//-------------------------------------------------
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vic20_user_port_device::vic20_user_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, VIC20_USER_PORT, "VIC-20 user port", tag, owner, clock),
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device_slot_interface(mconfig, *this)
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{
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}
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//-------------------------------------------------
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// vic20_user_port_device - destructor
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//-------------------------------------------------
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vic20_user_port_device::~vic20_user_port_device()
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{
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}
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//-------------------------------------------------
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// device_config_complete - perform any
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// operations now that the configuration is
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// complete
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//-------------------------------------------------
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void vic20_user_port_device::device_config_complete()
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{
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// inherit a copy of the static data
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const vic20_user_port_interface *intf = reinterpret_cast<const vic20_user_port_interface *>(static_config());
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if (intf != NULL)
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{
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*static_cast<vic20_user_port_interface *>(this) = *intf;
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}
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// or initialize to defaults if none provided
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else
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{
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memset(&m_out_cb1_cb, 0, sizeof(m_out_cb1_cb));
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memset(&m_out_cb2_cb, 0, sizeof(m_out_cb2_cb));
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memset(&m_out_reset_cb, 0, sizeof(m_out_reset_cb));
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}
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void vic20_user_port_device::device_start()
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{
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m_cart = dynamic_cast<device_vic20_user_port_interface *>(get_card_device());
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// resolve callbacks
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m_out_light_pen_func.resolve(m_out_light_pen_cb, *this);
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m_out_cb1_func.resolve(m_out_cb1_cb, *this);
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m_out_cb2_func.resolve(m_out_cb2_cb, *this);
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m_out_reset_func.resolve(m_out_reset_cb, *this);
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void vic20_user_port_device::device_reset()
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{
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port_reset_w(ASSERT_LINE);
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port_reset_w(CLEAR_LINE);
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}
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READ8_MEMBER( vic20_user_port_device::pb_r ) { UINT8 data = 0xff; if (m_cart != NULL) data = m_cart->vic20_pb_r(space, offset); return data; }
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WRITE8_MEMBER( vic20_user_port_device::pb_w ) { if (m_cart != NULL) m_cart->vic20_pb_w(space, offset, data); }
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READ_LINE_MEMBER( vic20_user_port_device::joy0_r ) { int state = 1; if (m_cart != NULL) state = m_cart->vic20_joy0_r(); return state; }
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READ_LINE_MEMBER( vic20_user_port_device::joy1_r ) { int state = 1; if (m_cart != NULL) state = m_cart->vic20_joy1_r(); return state; }
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READ_LINE_MEMBER( vic20_user_port_device::joy2_r ) { int state = 1; if (m_cart != NULL) state = m_cart->vic20_joy2_r(); return state; }
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READ_LINE_MEMBER( vic20_user_port_device::light_pen_r ) { int state = 1; if (m_cart != NULL) state = m_cart->vic20_light_pen_r(); return state; }
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READ_LINE_MEMBER( vic20_user_port_device::cassette_switch_r ) { int state = 1; if (m_cart != NULL) state = m_cart->vic20_cassette_switch_r(); return state; }
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WRITE_LINE_MEMBER( vic20_user_port_device::cb1_w ) { if (m_cart != NULL) m_cart->vic20_cb1_w(state); }
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WRITE_LINE_MEMBER( vic20_user_port_device::cb2_w ) { if (m_cart != NULL) m_cart->vic20_cb2_w(state); }
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WRITE_LINE_MEMBER( vic20_user_port_device::atn_w ) { if (m_cart != NULL) m_cart->vic20_atn_w(state); }
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WRITE_LINE_MEMBER( vic20_user_port_device::port_reset_w ) { if (m_cart != NULL) m_cart->vic20_reset_w(state); }
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WRITE_LINE_MEMBER( vic20_user_port_device::light_pen_w ) { m_out_light_pen_func(state); }
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WRITE_LINE_MEMBER( vic20_user_port_device::via_cb1_w ) { m_out_cb1_func(state); }
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WRITE_LINE_MEMBER( vic20_user_port_device::via_cb2_w ) { m_out_cb2_func(state); }
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WRITE_LINE_MEMBER( vic20_user_port_device::reset_w ) { m_out_reset_func(state); }
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