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Diffstat (limited to 'src/devices/bus/a2bus/a2pic.h')
-rw-r--r-- | src/devices/bus/a2bus/a2pic.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/a2pic.h b/src/devices/bus/a2bus/a2pic.h new file mode 100644 index 00000000000..172ec603502 --- /dev/null +++ b/src/devices/bus/a2bus/a2pic.h @@ -0,0 +1,67 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/********************************************************************* + + a2pic.h + + Apple II Parallel Interface Card + +*********************************************************************/ + +#ifndef __A2BUS_PIC__ +#define __A2BUS_PIC__ + +#include "a2bus.h" +#include "bus/centronics/ctronics.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class a2bus_pic_device: + public device_t, + public device_a2bus_card_interface +{ +public: + // construction/destruction + a2bus_pic_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + a2bus_pic_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; + virtual const rom_entry *device_rom_region() const; + virtual ioport_constructor device_input_ports() const; + + required_ioport m_dsw1; + + DECLARE_WRITE_LINE_MEMBER( ack_w ); + +protected: + virtual void device_start(); + virtual void device_reset(); + virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); + + virtual UINT8 read_c0nx(address_space &space, UINT8 offset); + virtual void write_c0nx(address_space &space, UINT8 offset, UINT8 data); + virtual UINT8 read_cnxx(address_space &space, UINT8 offset); + + required_device<centronics_device> m_ctx; + required_device<input_buffer_device> m_ctx_data_in; + required_device<output_latch_device> m_ctx_data_out; + + void start_strobe(); + void clear_strobe(); + +private: + UINT8 *m_rom; + bool m_started; + UINT8 m_ack; + bool m_irqenable; + bool m_autostrobe; + emu_timer *m_timer; +}; + +// device type definition +extern const device_type A2BUS_PIC; + +#endif /* __A2BUS_PIC__ */ |