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// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
#ifndef MAME_MACHINE_UPD71071_H
#define MAME_MACHINE_UPD71071_H
#pragma once
class upd71071_device : public device_t
{
public:
upd71071_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void set_cpu_tag(const char *tag) { m_cpu.set_tag(tag); }
void set_clock(int clock) { m_upd_clock = clock; }
auto out_hreq_callback() { return m_out_hreq_cb.bind(); }
auto out_eop_callback() { return m_out_eop_cb.bind(); }
template <unsigned N> auto dma_read_callback() { return m_dma_read_cb[N].bind(); }
template <unsigned N> auto dma_write_callback() { return m_dma_write_cb[N].bind(); }
template <unsigned N> auto out_dack_callback() { return m_out_dack_cb[N].bind(); }
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
DECLARE_WRITE_LINE_MEMBER(set_hreq);
DECLARE_WRITE_LINE_MEMBER(set_eop);
int dmarq(int state, int channel);
protected:
// device-level overrides
virtual void device_start() override;
private:
struct upd71071_reg
{
uint8_t initialise;
uint8_t channel;
uint16_t count_current[4];
uint16_t count_base[4];
uint32_t address_current[4];
uint32_t address_base[4];
uint16_t device_control;
uint8_t mode_control[4];
uint8_t status;
uint8_t temp_l;
uint8_t temp_h;
uint8_t request;
uint8_t mask;
};
void soft_reset();
TIMER_CALLBACK_MEMBER(dma_transfer_timer);
// internal state
upd71071_reg m_reg;
int m_selected_channel;
int m_buswidth;
int m_dmarq[4];
emu_timer* m_timer[4];
//int m_in_progress[4];
//int m_transfer_size[4];
int m_base;
int m_upd_clock;
devcb_write_line m_out_hreq_cb;
devcb_write_line m_out_eop_cb;
devcb_read16::array<4> m_dma_read_cb;
devcb_write16::array<4> m_dma_write_cb;
devcb_write_line::array<4> m_out_dack_cb;
int m_hreq;
int m_eop;
optional_device<cpu_device> m_cpu;
};
DECLARE_DEVICE_TYPE(UPD71071, upd71071_device)
#endif // MAME_MACHINE_UPD71071_H
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