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/***************************************************************************
atapihle.h
ATAPI High Level Emulation
Copyright Nicola Salmoria and the MAME Team.
Visit http://mamedev.org for licensing and usage restrictions.
***************************************************************************/
#pragma once
#ifndef __ATAPIHLE_H__
#define __ATAPIHLE_H__
#include "atahle.h"
#include "scsihle.h"
class atapi_hle_device : public ata_hle_device
{
public:
atapi_hle_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock,const char *shortname, const char *source);
enum
{
ATAPI_INTERRUPT_REASON_CD = 0x01, // 1 = command, 0 = data
ATAPI_INTERRUPT_REASON_IO = 0x02, // 1 = to host, 0 = to device
ATAPI_INTERRUPT_REASON_REL = 0x04, // 1 = bus release
ATAPI_INTERRUPT_REASON_TAG = 0xf8 // command tag
};
enum packet_command_length_t
{
PACKET_COMMAND_LENGTH_12,
PACKET_COMMAND_LENGTH_16
};
enum packet_command_response_t
{
PACKET_COMMAND_RESPONSE_DRQ_3MS,
PACKET_COMMAND_RESPONSE_INTRQ,
PACKET_COMMAND_RESPONSE_DRQ_50US
};
protected:
virtual int sector_length() { return ATAPI_BUFFER_LENGTH; }
virtual void process_buffer();
virtual void fill_buffer();
virtual bool is_ready() { return false; }
virtual void signature();
virtual void process_command();
virtual void finished_command();
UINT16 m_identify_buffer[256];
virtual void identify_packet_device() = 0;
packet_command_length_t packet_command_length();
packet_command_response_t packet_command_response();
private:
int m_packet;
int m_data_size;
required_device<scsihle_device> m_scsidev_device;
static const int ATAPI_BUFFER_LENGTH = 0xf800;
};
#endif
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