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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/*********************************************************************
microdrv.h
MAME interface to the Sinclair Microdrive image abstraction code
*********************************************************************/
#ifndef MAME_DEVICES_IMAGEDEV_MICRODRV_H
#define MAME_DEVICES_IMAGEDEV_MICRODRV_H
#pragma once
#include "magtape.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MDV_1 "mdv1"
#define MDV_2 "mdv2"
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// ======================> microdrive_image_device
class microdrive_image_device : public microtape_image_device
{
public:
// construction/destruction
microdrive_image_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL());
virtual ~microdrive_image_device();
auto comms_out_wr_callback() { return m_write_comms_out.bind(); }
// image-level overrides
virtual image_init_result call_load() override;
virtual void call_unload() override;
virtual bool is_creatable() const noexcept override { return false; }
virtual const char *image_interface() const noexcept override { return "ql_cass"; }
virtual const char *file_extensions() const noexcept override { return "mdv,mdr"; }
// specific implementation
DECLARE_WRITE_LINE_MEMBER( clk_w );
DECLARE_WRITE_LINE_MEMBER( comms_in_w );
DECLARE_WRITE_LINE_MEMBER( erase_w );
DECLARE_WRITE_LINE_MEMBER( read_write_w );
DECLARE_WRITE_LINE_MEMBER( data1_w );
DECLARE_WRITE_LINE_MEMBER( data2_w );
DECLARE_READ_LINE_MEMBER ( data1_r );
DECLARE_READ_LINE_MEMBER ( data2_r );
protected:
// device-level overrides
virtual void device_start() override;
TIMER_CALLBACK_MEMBER(bit_timer);
private:
devcb_write_line m_write_comms_out;
int m_clk;
int m_comms_in;
int m_comms_out;
int m_erase;
int m_read_write;
std::unique_ptr<uint8_t[]> m_left;
std::unique_ptr<uint8_t[]> m_right;
int m_bit_offset;
int m_byte_offset;
emu_timer *m_bit_timer;
};
// device type definition
DECLARE_DEVICE_TYPE(MICRODRIVE, microdrive_image_device)
#endif // MAME_DEVICES_IMAGEDEV_MICRODRV_H
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