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/*********************************************************************
microdrv.h
MESS interface to the Sinclair Microdrive image abstraction code
*********************************************************************/
#pragma once
#ifndef __MICRODRV__
#define __MICRODRV__
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MDV_1 "mdv1"
#define MDV_2 "mdv2"
#define MCFG_MICRODRIVE_ADD(_tag, _config) \
MCFG_DEVICE_ADD(_tag, MICRODRIVE, 0) \
MCFG_DEVICE_CONFIG(_config)
#define MICRODRIVE_CONFIG(_name) \
const microdrive_interface (_name) =
#define MCFG_MICRODRIVE_COMMS_OUT_CALLBACK(_write) \
devcb = µdrive_image_device::set_comms_out_wr_callback(*device, DEVCB2_##_write);
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// ======================> microdrive_interface
struct microdrive_interface
{
const char * m_interface;
device_image_display_info_func m_device_displayinfo;
};
// ======================> microdrive_image_device
class microdrive_image_device : public device_t,
public microdrive_interface,
public device_image_interface
{
public:
// construction/destruction
microdrive_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual ~microdrive_image_device();
template<class _Object> static devcb2_base &set_comms_out_wr_callback(device_t &device, _Object object) { return downcast<microdrive_image_device &>(device).m_write_comms_out.set_callback(object); }
// image-level overrides
virtual bool call_load();
virtual void call_unload();
virtual void call_display_info() { if (m_device_displayinfo) m_device_displayinfo(*this); }
virtual bool call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry) { return load_software(swlist, swname, start_entry); }
virtual iodevice_t image_type() const { return IO_CASSETTE; }
virtual bool is_readable() const { return 1; }
virtual bool is_writeable() const { return 1; }
virtual bool is_creatable() const { return 0; }
virtual bool must_be_loaded() const { return 0; }
virtual bool is_reset_on_load() const { return 0; }
virtual const char *image_interface() const { return "ql_cass"; }
virtual const char *file_extensions() const { return "mdv"; }
virtual const option_guide *create_option_guide() const { return NULL; }
// 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_config_complete();
virtual void device_start();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
private:
devcb2_write_line m_write_comms_out;
int m_clk;
int m_comms_in;
int m_comms_out;
int m_erase;
int m_read_write;
UINT8 *m_left;
UINT8 *m_right;
int m_bit_offset;
int m_byte_offset;
emu_timer *m_bit_timer;
};
// device type definition
extern const device_type MICRODRIVE;
#endif
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