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// license:BSD-3-Clause
// copyright-holders:AJR
/**********************************************************************
Adaptec AIC-580
**********************************************************************/
#ifndef MAME_MACHINE_AIC580_H
#define MAME_MACHINE_AIC580_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> aic580_device
class aic580_device : public device_t
{
public:
// construction/destruction
aic580_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
// callback configuration
auto bdin_callback() { return m_bdin_callback.bind(); }
auto bdout_callback() { return m_bdout_callback.bind(); }
auto back_callback() { return m_back_callback.bind(); }
auto sread_callback() { return m_sread_callback.bind(); }
auto swrite_callback() { return m_swrite_callback.bind(); }
// microprocessor interface
void mpu_map(address_map &map);
// port B DMA interface
DECLARE_WRITE_LINE_MEMBER(breq_w);
protected:
// device-specific overrides
virtual void device_resolve_objects() override;
virtual void device_start() override;
virtual void device_reset() override;
private:
// register handlers
u8 r80_r();
void transfer_speed_w(u8 data);
void dma_mode_w(u8 data);
void r83_w(u8 data);
void r86_w(u8 data);
u8 r88_r();
void r88_w(u8 data);
void r8a_w(u8 data);
void r8b_w(u8 data);
void bus_on_time_w(u8 data);
void bus_off_time_w(u8 data);
template<int Channel> void ch_addrl_w(u8 data);
template<int Channel> void ch_addrm_w(u8 data);
template<int Channel> void ch_addrh_w(u8 data);
void ra2_w(u8 data);
void ra3_w(u8 data);
void ra4_w(u8 data);
u8 fifo_data_r();
void fifo_data_w(u8 data);
u8 buffer_r(offs_t offset);
void buffer_w(offs_t offset, u8 data);
// callback objects
devcb_read8 m_bdin_callback;
devcb_write8 m_bdout_callback;
devcb_write_line m_back_callback;
devcb_read16 m_sread_callback;
devcb_write16 m_swrite_callback;
// internal state
u8 m_dma_mode;
u32 m_channel_addr[2];
u8 m_fifo_read_index;
u8 m_fifo_write_index;
u8 m_fifo_data[16];
};
// device type declaration
DECLARE_DEVICE_TYPE(AIC580, aic580_device)
#endif // MAME_MACHINE_AIC580_H
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