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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Luxor 4105 SASI hard disk controller emulation
*********************************************************************/
#ifndef MAME_BUS_ABCBUS_LUX4105_H
#define MAME_BUS_ABCBUS_LUX4105_H
#pragma once
#include "abcbus.h"
#include "bus/nscsi/devices.h"
#include "machine/nscsi_bus.h"
#include "machine/nscsi_cb.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> luxor_4105_device
class luxor_4105_device : public device_t,
public device_abcbus_card_interface
{
public:
// construction/destruction
luxor_4105_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override;
virtual ioport_constructor device_input_ports() const override;
// device_abcbus_interface overrides
virtual void abcbus_cs(uint8_t data) override;
virtual int abcbus_csb() override;
virtual uint8_t abcbus_inp() override;
virtual void abcbus_out(uint8_t data) override;
virtual uint8_t abcbus_stat() override;
virtual void abcbus_c1(uint8_t data) override;
virtual void abcbus_c3(uint8_t data) override;
virtual void abcbus_c4(uint8_t data) override;
virtual uint8_t abcbus_tren() override;
virtual void abcbus_tren(uint8_t data) override;
virtual void abcbus_prac(int state) override;
private:
void internal_reset();
void update_ack();
void update_dma();
void write_dma_register(uint8_t data);
void write_sasi_data(uint8_t data);
DECLARE_WRITE_LINE_MEMBER( write_sasi_bsy );
DECLARE_WRITE_LINE_MEMBER( write_sasi_cd );
DECLARE_WRITE_LINE_MEMBER( write_sasi_req );
DECLARE_WRITE_LINE_MEMBER( write_sasi_msg );
DECLARE_WRITE_LINE_MEMBER( write_sasi_io );
required_device<nscsi_callback_device> m_sasi;
required_ioport m_1e;
required_ioport m_5e;
bool m_cs;
uint8_t m_data_out;
uint8_t m_dma;
bool m_req;
bool m_drq;
bool m_pren;
};
// device type definition
DECLARE_DEVICE_TYPE(LUXOR_4105, luxor_4105_device)
#endif // MAME_BUS_ABCBUS_LUX4105_H
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