diff options
Diffstat (limited to 'src/devices/bus/a2bus/a2midi.cpp')
-rw-r--r-- | src/devices/bus/a2bus/a2midi.cpp | 57 |
1 files changed, 49 insertions, 8 deletions
diff --git a/src/devices/bus/a2bus/a2midi.cpp b/src/devices/bus/a2bus/a2midi.cpp index dfd6ce71694..ef19bd4e7e6 100644 --- a/src/devices/bus/a2bus/a2midi.cpp +++ b/src/devices/bus/a2bus/a2midi.cpp @@ -10,23 +10,55 @@ #include "emu.h" #include "a2midi.h" -#include "machine/clock.h" + #include "bus/midi/midi.h" +#include "machine/6840ptm.h" +#include "machine/6850acia.h" +#include "machine/clock.h" +namespace { + /*************************************************************************** PARAMETERS ***************************************************************************/ +#define MIDI_PTM_TAG "midi_ptm" +#define MIDI_ACIA_TAG "midi_acia" + + //************************************************************************** -// GLOBAL VARIABLES +// TYPE DEFINITIONS //************************************************************************** -DEFINE_DEVICE_TYPE(A2BUS_MIDI, a2bus_midi_device, "a2midi", "6850 MIDI card") +class a2bus_midi_device: + public device_t, + public device_a2bus_card_interface +{ +public: + // construction/destruction + a2bus_midi_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); -#define MIDI_PTM_TAG "midi_ptm" -#define MIDI_ACIA_TAG "midi_acia" +protected: + a2bus_midi_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + virtual void device_start() override ATTR_COLD; + virtual void device_reset() override ATTR_COLD; + virtual void device_add_mconfig(machine_config &config) override ATTR_COLD; + + virtual uint8_t read_c0nx(uint8_t offset) override; + virtual void write_c0nx(uint8_t offset, uint8_t data) override; + + required_device<ptm6840_device> m_ptm; + required_device<acia6850_device> m_acia; + +private: + void acia_irq_w(int state); + void ptm_irq_w(int state); + void write_acia_clock(int state); + + bool m_acia_irq, m_ptm_irq; +}; //------------------------------------------------- // device_add_mconfig - add device configuration @@ -117,7 +149,7 @@ void a2bus_midi_device::write_c0nx(uint8_t offset, uint8_t data) } } -WRITE_LINE_MEMBER( a2bus_midi_device::acia_irq_w ) +void a2bus_midi_device::acia_irq_w(int state) { m_acia_irq = state ? true : false; @@ -131,7 +163,7 @@ WRITE_LINE_MEMBER( a2bus_midi_device::acia_irq_w ) } } -WRITE_LINE_MEMBER( a2bus_midi_device::ptm_irq_w ) +void a2bus_midi_device::ptm_irq_w(int state) { m_acia_irq = state ? true : false; @@ -145,8 +177,17 @@ WRITE_LINE_MEMBER( a2bus_midi_device::ptm_irq_w ) } } -WRITE_LINE_MEMBER( a2bus_midi_device::write_acia_clock ) +void a2bus_midi_device::write_acia_clock(int state) { m_acia->write_txc(state); m_acia->write_rxc(state); } + +} // anonymous namespace + + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +DEFINE_DEVICE_TYPE_PRIVATE(A2BUS_MIDI, device_a2bus_card_interface, a2bus_midi_device, "a2midi", "6850 MIDI card") |