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Diffstat (limited to 'src/devices/bus/adamnet/adamnet.cpp')
-rw-r--r-- | src/devices/bus/adamnet/adamnet.cpp | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/src/devices/bus/adamnet/adamnet.cpp b/src/devices/bus/adamnet/adamnet.cpp new file mode 100644 index 00000000000..9407b7fbaf2 --- /dev/null +++ b/src/devices/bus/adamnet/adamnet.cpp @@ -0,0 +1,264 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Coleco ADAMnet bus emulation + +**********************************************************************/ + +#include "adamnet.h" + + + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type ADAMNET = &device_creator<adamnet_device>; +const device_type ADAMNET_SLOT = &device_creator<adamnet_slot_device>; + + + +//************************************************************************** +// DEVICE ADAMNET CARD INTERFACE +//************************************************************************** + +//------------------------------------------------- +// device_adamnet_card_interface - constructor +//------------------------------------------------- + +device_adamnet_card_interface::device_adamnet_card_interface(const machine_config &mconfig, device_t &device) + : device_slot_card_interface(mconfig, device) +{ +} + + +//------------------------------------------------- +// ~device_adamnet_card_interface - destructor +//------------------------------------------------- + +device_adamnet_card_interface::~device_adamnet_card_interface() +{ +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// adamnet_slot_device - constructor +//------------------------------------------------- +adamnet_slot_device::adamnet_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, ADAMNET_SLOT, "ADAMnet slot", tag, owner, clock, "adamnet_slot", __FILE__), + device_slot_interface(mconfig, *this) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void adamnet_slot_device::device_start() +{ + m_bus = machine().device<adamnet_device>(ADAMNET_TAG); + device_adamnet_card_interface *dev = dynamic_cast<device_adamnet_card_interface *>(get_card_device()); + if (dev) m_bus->add_device(get_card_device()); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// adamnet_device - constructor +//------------------------------------------------- + +adamnet_device::adamnet_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, ADAMNET, "ADAMnet bus", tag, owner, clock, "adamnet", __FILE__), + m_txd(1), + m_reset(CLEAR_LINE) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void adamnet_device::device_start() +{ +} + + +//------------------------------------------------- +// device_stop - device-specific stop +//------------------------------------------------- + +void adamnet_device::device_stop() +{ + m_device_list.reset(); +} + + +//------------------------------------------------- +// add_adamnet_card - add ADAMNET card +//------------------------------------------------- + +void adamnet_device::add_device(device_t *target) +{ + daisy_entry *entry = global_alloc(daisy_entry(target)); + + entry->m_interface->m_bus = this; + + m_device_list.append(*entry); +} + + +//------------------------------------------------- +// daisy_entry - constructor +//------------------------------------------------- + +adamnet_device::daisy_entry::daisy_entry(device_t *device) + : m_next(NULL), + m_device(device), + m_interface(NULL), + m_txd(1) +{ + device->interface(m_interface); +} + + +//------------------------------------------------- +// rxd_r - receive data +//------------------------------------------------- + +READ_LINE_MEMBER( adamnet_device::rxd_r ) +{ + int state = m_txd;//1; + + daisy_entry *entry = m_device_list.first(); + + while (entry) + { + state &= entry->m_txd; + + entry = entry->next(); + } + + return state; +} + + +//------------------------------------------------- +// rxd_r - receive data +//------------------------------------------------- + +int adamnet_device::rxd_r(device_t *device) +{ + int state = m_txd; + + daisy_entry *entry = m_device_list.first(); + + while (entry) + { + //if (strcmp(entry->m_device->tag(), device->tag())) + { + state &= entry->m_txd; + } + + entry = entry->next(); + } + + return state; +} + + +//------------------------------------------------- +// txd_w - transmit data +//------------------------------------------------- + +WRITE_LINE_MEMBER( adamnet_device::txd_w ) +{ + if (m_txd != state) + { + m_txd = state; + } +} + + +//------------------------------------------------- +// txd_w - transmit data +//------------------------------------------------- + +void adamnet_device::txd_w(device_t *device, int state) +{ + daisy_entry *entry = m_device_list.first(); + + while (entry) + { + if (!strcmp(entry->m_device->tag(), device->tag())) + { + if (entry->m_txd != state) + { + entry->m_txd = state; + } + break; + } + + entry = entry->next(); + } +} + + +//------------------------------------------------- +// reset_r - bus reset +//------------------------------------------------- + +READ_LINE_MEMBER( adamnet_device::reset_r ) +{ + return m_reset; +} + + +//------------------------------------------------- +// reset_w - bus reset +//------------------------------------------------- + +WRITE_LINE_MEMBER( adamnet_device::reset_w ) +{ + m_reset = state; + + daisy_entry *entry = m_device_list.first(); + + while (entry) + { + entry->m_interface->adamnet_reset_w(state); + + entry = entry->next(); + } +} + + +//------------------------------------------------- +// SLOT_INTERFACE( adamnet_devices ) +//------------------------------------------------- + +// slot devices +#include "ddp.h" +#include "fdc.h" +#include "kb.h" +#include "printer.h" +#include "spi.h" + +SLOT_INTERFACE_START( adamnet_devices ) + SLOT_INTERFACE("ddp", ADAM_DDP) + SLOT_INTERFACE("fdc", ADAM_FDC) + SLOT_INTERFACE("kb", ADAM_KB) + SLOT_INTERFACE("prn", ADAM_PRN) + SLOT_INTERFACE("spi", ADAM_SPI) +SLOT_INTERFACE_END |