// 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 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(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 iodevice_t image_type() const noexcept override { return IO_HARDDISK; } 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 must_be_loaded() const noexcept override { return false; } virtual bool is_reset_on_load() const noexcept override { return false; } virtual const char *file_extensions() const noexcept override { return "vhd"; } // specific implementation DECLARE_READ8_MEMBER(read) { return read(offset); } DECLARE_WRITE8_MEMBER(write) { write(offset, data); } 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 m_cpu; address_space * m_cpu_space; uint32_t m_logical_record_number; uint32_t m_buffer_address; uint8_t m_status; }; // device type definition DECLARE_DEVICE_TYPE(COCO_VHD, coco_vhd_image_device) /*************************************************************************** DEVICE CONFIGURATION MACROS ***************************************************************************/ #endif // MAME_MACHINE_COCO_VHD_H