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-rw-r--r--src/devices/bus/a2bus/a2pic.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/src/devices/bus/a2bus/a2pic.h b/src/devices/bus/a2bus/a2pic.h
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+++ b/src/devices/bus/a2bus/a2pic.h
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+// 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__ */