diff options
Diffstat (limited to 'src/devices/bus/a2bus/a2midi.h')
-rw-r--r-- | src/devices/bus/a2bus/a2midi.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/a2midi.h b/src/devices/bus/a2bus/a2midi.h new file mode 100644 index 00000000000..f7023eba570 --- /dev/null +++ b/src/devices/bus/a2bus/a2midi.h @@ -0,0 +1,55 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/********************************************************************* + + a2midi.h + + Apple II 6850 MIDI card, as made by Passport, Yamaha, and others. + +*********************************************************************/ + +#ifndef __A2BUS_MIDI__ +#define __A2BUS_MIDI__ + +#include "a2bus.h" +#include "machine/6840ptm.h" +#include "machine/6850acia.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +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 clock); + a2bus_midi_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); + + // optional information overrides + virtual machine_config_constructor device_mconfig_additions() const; + + DECLARE_WRITE_LINE_MEMBER( acia_irq_w ); + DECLARE_WRITE_LINE_MEMBER( ptm_irq_w ); + DECLARE_WRITE_LINE_MEMBER( write_acia_clock ); + +protected: + virtual void device_start(); + virtual void device_reset(); + + virtual UINT8 read_c0nx(address_space &space, UINT8 offset); + virtual void write_c0nx(address_space &space, UINT8 offset, UINT8 data); + + required_device<ptm6840_device> m_ptm; + required_device<acia6850_device> m_acia; + +private: + bool m_acia_irq, m_ptm_irq; +}; + +// device type definition +extern const device_type A2BUS_MIDI; + +#endif /* __A2BUS_MIDI__ */ |