// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
#ifndef MAME_MACHINE_MAPLE_DC_H
#define MAME_MACHINE_MAPLE_DC_H
#pragma once
#include "cpu/sh/sh4.h"
class maple_device;
class maple_dc_device : public device_t
{
public:
enum {
DMA_MAPLE_IRQ
};
template <typename T>
maple_dc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, T &&cpu_tag)
: maple_dc_device(mconfig, tag, owner, clock)
{
set_maincpu_tag(std::forward<T>(cpu_tag));
}
maple_dc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
template <typename T> void set_maincpu_tag(T &&cpu_tag) { cpu.set_tag(std::forward<T>(cpu_tag)); }
auto irq_callback() { return irq_cb.bind(); }
DECLARE_READ32_MEMBER(sb_mdstar_r); // 5f6c04
DECLARE_WRITE32_MEMBER(sb_mdstar_w);
DECLARE_READ32_MEMBER(sb_mdtsel_r); // 5f6c10
DECLARE_WRITE32_MEMBER(sb_mdtsel_w);
DECLARE_READ32_MEMBER(sb_mden_r); // 5f6c14
DECLARE_WRITE32_MEMBER(sb_mden_w);
DECLARE_READ32_MEMBER(sb_mdst_r); // 5f6c18
DECLARE_WRITE32_MEMBER(sb_mdst_w);
DECLARE_READ32_MEMBER(sb_msys_r); // 5f6c80
DECLARE_WRITE32_MEMBER(sb_msys_w);
DECLARE_WRITE32_MEMBER(sb_mdapro_w); // 5f6c8c
void amap(address_map &map);
void end_of_reply();
void register_port(int port, maple_device *device);
void maple_hw_trigger();
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
private:
enum {
DMA_IDLE,
DMA_DONE,
DMA_SEND,
DMA_WAIT_NOP,
DMA_WAIT_RESET,
DMA_WAIT_REPLY,
DMA_GOT_REPLY,
DMA_TIMEOUT
};
maple_device *devices[4];
required_device<sh4_device> cpu;
emu_timer *timer;
uint32_t mdstar, mden, mdst, msys;
uint32_t mdtsel;
uint32_t dma_state, dma_adr, dma_port, dma_dest;
bool dma_endflag;
devcb_write8 irq_cb;
void dma_step();
};
DECLARE_DEVICE_TYPE(MAPLE_DC, maple_dc_device)
#endif // MAME_MACHINE_MAPLE_DC_H