diff options
Diffstat (limited to 'src/devices/bus/a800/a8sio.c')
-rw-r--r-- | src/devices/bus/a800/a8sio.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/src/devices/bus/a800/a8sio.c b/src/devices/bus/a800/a8sio.c new file mode 100644 index 00000000000..fd64d077b50 --- /dev/null +++ b/src/devices/bus/a800/a8sio.c @@ -0,0 +1,219 @@ +// license:BSD-3-Clause +// copyright-holders:Wilbert Pol +/*************************************************************************** + + a8sio.h - Atari 8 bit SIO bus interface + + + 1 1 + 2 4 6 8 0 2 + +-----------+ + / o o o o o o \ + / o o o o o o o \ + +-----------------+ + 1 3 5 7 9 1 1 + 1 3 + + 1 - clock in (to computer) + 2 - clock out + 3 - data in + 4 - GND + 5 - data out + 6 - GND + 7 - command (active low) + 8 - motor + 9 - proceed (active low) + 10 - +5V/ready + 11 - audio in + 12 - +12V (A400/A800) + 13 - interrupt (active low) + +***************************************************************************/ + +#include "emu.h" +#include "a8sio.h" +#include "cassette.h" + + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type A8SIO_SLOT = &device_creator<a8sio_slot_device>; + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// a8sio_slot_device - constructor +//------------------------------------------------- +a8sio_slot_device::a8sio_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, A8SIO_SLOT, "Atari 8 bit SIO Slot", tag, owner, clock, "a8sio_slot", __FILE__) + , device_slot_interface(mconfig, *this) +{ +} + +a8sio_slot_device::a8sio_slot_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) : + device_t(mconfig, type, name, tag, owner, clock, shortname, source), + device_slot_interface(mconfig, *this) +{ +} + +void a8sio_slot_device::static_set_a8sio_slot(device_t &device, const char *tag, const char *slottag) +{ + a8sio_slot_device &a8sio_ext = dynamic_cast<a8sio_slot_device &>(device); + a8sio_ext.m_a8sio_tag = tag; + a8sio_ext.m_a8sio_slottag = slottag; +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void a8sio_slot_device::device_start() +{ + device_a8sio_card_interface *dev = dynamic_cast<device_a8sio_card_interface *>(get_card_device()); + + if (dev) + { + device_a8sio_card_interface::static_set_a8sio_tag(*dev, m_a8sio_tag, m_a8sio_slottag); + } +} + + + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type A8SIO = &device_creator<a8sio_device>; + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// a8sio_device - constructor +//------------------------------------------------- + +a8sio_device::a8sio_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, A8SIO, "Atari 8 biot SIO", tag, owner, clock, "a8sio", __FILE__) + , m_out_clock_in_cb(*this) + , m_out_data_in_cb(*this) + , m_out_audio_in_cb(*this) +{ +} + +a8sio_device::a8sio_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) + : device_t(mconfig, type, name, tag, owner, clock, shortname, source) + , m_out_clock_in_cb(*this) + , m_out_data_in_cb(*this) + , m_out_audio_in_cb(*this) +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void a8sio_device::device_start() +{ + // resolve callbacks + m_out_clock_in_cb.resolve_safe(); + m_out_data_in_cb.resolve_safe(); + m_out_audio_in_cb.resolve_safe(); + + // clear slot + m_device = NULL; +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void a8sio_device::device_reset() +{ +} + +device_a8sio_card_interface *a8sio_device::get_a8sio_card() +{ + return m_device; +} + +void a8sio_device::add_a8sio_card(device_a8sio_card_interface *card) +{ + m_device = card; +} + +WRITE_LINE_MEMBER( a8sio_device::clock_in_w ) +{ + m_out_clock_in_cb(state); +} + +WRITE_LINE_MEMBER( a8sio_device::data_in_w ) +{ + m_out_data_in_cb(state); +} + +WRITE_LINE_MEMBER( a8sio_device::motor_w ) +{ + if (m_device) + { + m_device->motor_w(state); + } +} + +WRITE8_MEMBER( a8sio_device::audio_in_w ) +{ + m_out_audio_in_cb(data); +} + + +//************************************************************************** +// DEVICE A8SIO CARD INTERFACE +//************************************************************************** + +//------------------------------------------------- +// device_a8sio_card_interface - constructor +//------------------------------------------------- + +device_a8sio_card_interface::device_a8sio_card_interface(const machine_config &mconfig, device_t &device) + : device_slot_card_interface(mconfig, device) + , m_a8sio(NULL) + , m_a8sio_tag(NULL) +{ +} + + +//------------------------------------------------- +// ~device_a8sio_card_interface - destructor +//------------------------------------------------- + +device_a8sio_card_interface::~device_a8sio_card_interface() +{ +} + +void device_a8sio_card_interface::static_set_a8sio_tag(device_t &device, const char *tag, const char *slottag) +{ + device_a8sio_card_interface &a8sio_card = dynamic_cast<device_a8sio_card_interface &>(device); + a8sio_card.m_a8sio_tag = tag; + a8sio_card.m_a8sio_slottag = slottag; +} + +void device_a8sio_card_interface::set_a8sio_device() +{ + m_a8sio = dynamic_cast<a8sio_device *>(device().machine().device(m_a8sio_tag)); + m_a8sio->add_a8sio_card(this); +} + +WRITE_LINE_MEMBER( device_a8sio_card_interface::motor_w ) +{ + //printf("device_a8sio_card_interface::motor_w %d\n", state); +} + + +SLOT_INTERFACE_START(a8sio_cards) + SLOT_INTERFACE("cassette", A8SIO_CASSETTE) +SLOT_INTERFACE_END |