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// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
* mb89352.h
*
* Created on: 16/01/2011
*/
#ifndef MAME_MACHINE_MB89352_H
#define MAME_MACHINE_MB89352_H
#include "legscsi.h"
class mb89352_device : public legacy_scsi_host_adapter
{
public:
// construction/destruction
mb89352_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL());
auto irq_cb() { return m_irq_cb.bind(); }
auto drq_cb() { return m_drq_cb.bind(); }
// any publically accessible interfaces needed for runtime
uint8_t mb89352_r(offs_t offset);
void mb89352_w(offs_t offset, uint8_t data);
void set_phase(int phase);
protected:
// device-level overrides (none are required, but these are common)
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_stop() override;
TIMER_CALLBACK_MEMBER(transfer_tick);
private:
int get_scsi_cmd_len(uint8_t cbyte);
//void set_ints(uint8_t flag);
devcb_write_line m_irq_cb; /* irq callback */
devcb_write_line m_drq_cb; /* drq callback */
uint8_t m_phase; // current SCSI phase
uint8_t m_target; // current SCSI target
uint8_t m_bdid; // Bus device ID (SCSI ID of the bus?)
uint8_t m_ints; // Interrupt Sense
uint8_t m_temp; // Temporary register (To/From SCSI bus)
uint8_t m_data; // Data register
uint8_t m_scmd; // SPC Command register
uint32_t m_transfer_count; // byte transfer counter, also used as a timeout counter for selection.
uint8_t m_int_enable;
uint8_t m_sel_enable;
uint8_t m_resel_enable;
uint8_t m_parity_enable;
uint8_t m_arbit_enable;
uint8_t m_busfree_int_enable;
uint8_t m_line_status;
uint8_t m_spc_status;
uint8_t m_error_status;
uint8_t m_command_index;
uint8_t m_command[16];
uint32_t m_transfer_index;
uint8_t m_buffer[512];
emu_timer* m_transfer_timer;
};
DECLARE_DEVICE_TYPE(MB89352A, mb89352_device)
#endif // MAME_MACHINE_MB89352_H
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