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+/***************************************************************************
+
+ dgnalpha.h
+
+ Dragon Alpha
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __DGNALPHA__
+#define __DGNALPHA__
+
+
+#include "includes/dragon.h"
+#include "sound/ay8910.h"
+#include "machine/wd17xx.h"
+
+
+
+//**************************************************************************
+// MACROS / CONSTANTS
+//**************************************************************************
+
+/* devices */
+#define PIA2_TAG "pia2"
+#define AY8912_TAG "ay8912"
+#define WD2797_TAG "wd2797"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class dragon_alpha_state : public dragon64_state
+{
+public:
+ dragon_alpha_state(const machine_config &mconfig, device_type type, const char *tag);
+
+ required_device<pia6821_device> m_pia_2;
+ required_device<device_t> m_ay8912;
+ required_device<device_t> m_fdc;
+
+ static const pia6821_interface pia2_config;
+ static const ay8910_interface ay8912_interface;
+ static const wd17xx_interface fdc_interface;
+
+protected:
+ /* driver overrides */
+ virtual void device_start(void);
+ virtual void device_reset(void);
+
+ /* interrupts */
+ virtual bool firq_get_line(void);
+
+ /* PIA1 */
+ virtual DECLARE_READ8_MEMBER( ff20_read );
+ virtual DECLARE_WRITE8_MEMBER( ff20_write );
+
+private:
+ UINT8 m_just_reset;
+
+ /* pia2 */
+ DECLARE_WRITE8_MEMBER( pia2_pa_w );
+ DECLARE_WRITE_LINE_MEMBER( pia2_firq_a );
+ DECLARE_WRITE_LINE_MEMBER( pia2_firq_b );
+
+ /* psg */
+ DECLARE_READ8_MEMBER( psg_porta_read );
+ DECLARE_WRITE8_MEMBER( psg_porta_write );
+
+ /* fdc */
+ DECLARE_WRITE_LINE_MEMBER( fdc_intrq_w );
+ DECLARE_WRITE_LINE_MEMBER( fdc_drq_w );
+
+ /* modem */
+ UINT8 modem_r(offs_t offset);
+ void modem_w(offs_t offset, UINT8 data);
+};
+
+#endif /* __DGNALPHA__ */