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// license:BSD-3-Clause
// copyright-holders:Nathan Woods
/***************************************************************************
coco_vhd.h
Color Computer Virtual Hard Drives
***************************************************************************/
#ifndef MAME_MACHINE_COCO_VHD_H
#define MAME_MACHINE_COCO_VHD_H
#pragma once
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// ======================> coco_vhd_image_device
class coco_vhd_image_device : public device_t,
public device_image_interface
{
public:
// construction/destruction
template <typename T>
coco_vhd_image_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, T &&cpu_tag)
: coco_vhd_image_device(mconfig, tag, owner, clock)
{
m_cpu.set_tag(std::forward<T>(cpu_tag));
}
coco_vhd_image_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual ~coco_vhd_image_device();
// image-level overrides
virtual image_init_result call_load() override;
virtual bool is_readable() const noexcept override { return true; }
virtual bool is_writeable() const noexcept override { return true; }
virtual bool is_creatable() const noexcept override { return true; }
virtual bool is_reset_on_load() const noexcept override { return false; }
virtual const char *file_extensions() const noexcept override { return "vhd"; }
virtual const char *image_type_name() const noexcept override { return "harddisk"; }
virtual const char *image_brief_type_name() const noexcept override { return "hard"; }
// specific implementation
uint8_t read(offs_t offset);
void write(offs_t offset, uint8_t data);
protected:
// device-level overrides
virtual void device_start() override;
void coco_vhd_readwrite(uint8_t data);
private:
required_device<cpu_device> m_cpu;
address_space * m_cpu_space = nullptr;
uint32_t m_logical_record_number = 0;
uint32_t m_buffer_address = 0;
uint8_t m_status = 0;
};
// device type definition
DECLARE_DEVICE_TYPE(COCO_VHD, coco_vhd_image_device)
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#endif // MAME_MACHINE_COCO_VHD_H
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