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-rw-r--r--src/devices/bus/a2bus/corvfdc02.h70
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diff --git a/src/devices/bus/a2bus/corvfdc02.h b/src/devices/bus/a2bus/corvfdc02.h
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+// license:BSD-3-Clause
+// copyright-holders:R. Belmont
+/*********************************************************************
+
+ corvfdc02.h
+
+ Implemention of the Corvus Systems CORVUS02 floppy controller
+
+*********************************************************************/
+
+#ifndef __A2BUS_CORVFDC02__
+#define __A2BUS_CORVFDC02__
+
+#include "emu.h"
+#include "a2bus.h"
+#include "machine/upd765.h"
+#include "formats/imd_dsk.h"
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class a2bus_corvfdc02_device:
+ public device_t,
+ public device_a2bus_card_interface
+{
+public:
+ // construction/destruction
+ a2bus_corvfdc02_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);
+ a2bus_corvfdc02_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const;
+ virtual const rom_entry *device_rom_region() const;
+
+ DECLARE_WRITE_LINE_MEMBER(intrq_w);
+ DECLARE_WRITE_LINE_MEMBER(drq_w);
+
+ DECLARE_FLOPPY_FORMATS(corv_floppy_formats);
+
+protected:
+ virtual void device_start();
+ virtual void device_reset();
+ virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
+
+ // overrides of standard a2bus slot functions
+ 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<upd765a_device> m_fdc;
+ required_device<floppy_connector> m_con1;
+ required_device<floppy_connector> m_con2;
+ required_device<floppy_connector> m_con3;
+ required_device<floppy_connector> m_con4;
+
+private:
+ UINT8 *m_rom;
+ UINT8 m_fdc_local_status, m_fdc_local_command;
+ UINT16 m_bufptr;
+ UINT8 m_buffer[2048]; // 1x6116 SRAM
+ floppy_image_device *m_curfloppy;
+ bool m_in_drq;
+ emu_timer *m_timer;
+};
+
+// device type definition
+extern const device_type A2BUS_CORVFDC02;
+
+#endif /* __A2BUS_CORVFDC02__ */