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author | 2012-08-21 10:41:19 +0000 | |
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committer | 2012-08-21 10:41:19 +0000 | |
commit | 7285b359d259b2ae0fdf85096571c386ec8c991a (patch) | |
tree | a027aff57f1a255f9ec6cfd3b68cabe4b6683998 /src/mess/machine/vip_byteio.c | |
parent | 67c425e90757876a6716b7867df30c0149912e74 (diff) |
Merge of MESS sources (no whatsnew)
Diffstat (limited to 'src/mess/machine/vip_byteio.c')
-rw-r--r-- | src/mess/machine/vip_byteio.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/mess/machine/vip_byteio.c b/src/mess/machine/vip_byteio.c new file mode 100644 index 00000000000..b7c4109eb0a --- /dev/null +++ b/src/mess/machine/vip_byteio.c @@ -0,0 +1,132 @@ +/********************************************************************** + + RCA Cosmac VIP Byte Input/Output port emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +**********************************************************************/ + +#include "machine/vip_byteio.h" + + + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type VIP_BYTEIO_PORT = &device_creator<vip_byteio_port_device>; + + + +//************************************************************************** +// CARD INTERFACE +//************************************************************************** + +//------------------------------------------------- +// device_vip_byteio_port_interface - constructor +//------------------------------------------------- + +device_vip_byteio_port_interface::device_vip_byteio_port_interface(const machine_config &mconfig, device_t &device) + : device_slot_card_interface(mconfig,device) +{ + m_slot = dynamic_cast<vip_byteio_port_device *>(device.owner()); +} + + +//------------------------------------------------- +// ~device_vip_byteio_port_interface - destructor +//------------------------------------------------- + +device_vip_byteio_port_interface::~device_vip_byteio_port_interface() +{ +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// vip_byteio_port_device - constructor +//------------------------------------------------- + +vip_byteio_port_device::vip_byteio_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, VIP_BYTEIO_PORT, "VIP byte I/O port", tag, owner, clock), + device_slot_interface(mconfig, *this) +{ +} + + +//------------------------------------------------- +// vip_byteio_port_device - destructor +//------------------------------------------------- + +vip_byteio_port_device::~vip_byteio_port_device() +{ +} + + +//------------------------------------------------- +// device_config_complete - perform any +// operations now that the configuration is +// complete +//------------------------------------------------- + +void vip_byteio_port_device::device_config_complete() +{ + // inherit a copy of the static data + const vip_byteio_port_interface *intf = reinterpret_cast<const vip_byteio_port_interface *>(static_config()); + if (intf != NULL) + { + *static_cast<vip_byteio_port_interface *>(this) = *intf; + } + + // or initialize to defaults if none provided + else + { + memset(&m_out_inst_cb, 0, sizeof(m_out_inst_cb)); + } +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void vip_byteio_port_device::device_start() +{ + m_cart = dynamic_cast<device_vip_byteio_port_interface *>(get_card_device()); + + // resolve callbacks + m_out_inst_func.resolve(m_out_inst_cb, *this); +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void vip_byteio_port_device::device_reset() +{ +} + + +UINT8 vip_byteio_port_device::in_r() { UINT8 data = 0xff; if (m_cart != NULL) data = m_cart->vip_in_r(); return data; } +void vip_byteio_port_device::out_w(UINT8 data) { if (m_cart != NULL) m_cart->vip_out_w(data); } +READ_LINE_MEMBER( vip_byteio_port_device::ef3_r ) { int state = CLEAR_LINE; if (m_cart != NULL) state = m_cart->vip_ef3_r(); return state; } +READ_LINE_MEMBER( vip_byteio_port_device::ef4_r ) { int state = CLEAR_LINE; if (m_cart != NULL) state = m_cart->vip_ef4_r(); return state; } +WRITE_LINE_MEMBER( vip_byteio_port_device::q_w ) { if (m_cart != NULL) m_cart->vip_q_w(state); } + +WRITE_LINE_MEMBER( vip_byteio_port_device::inst_w ) { m_out_inst_func(state); } + + +//------------------------------------------------- +// SLOT_INTERFACE( vip_byteio_cards ) +//------------------------------------------------- + +SLOT_INTERFACE_START( vip_byteio_cards ) + //SLOT_INTERFACE("exp2", VP576_BYTEIO) + SLOT_INTERFACE("ascii", VP620) +SLOT_INTERFACE_END |