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// license:BSD-3-Clause
// copyright-holders:David Haywood
#ifndef MAME_MACHINE_GENERALPLUS_GPL_DMA_H
#define MAME_MACHINE_GENERALPLUS_GPL_DMA_H
#pragma once
class gpl_dma_device : public device_t
{
public:
gpl_dma_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto space_read_callback() { return m_space_read_cb.bind(); }
auto space_write_callback() { return m_space_write_cb.bind(); }
auto dma_complete_callback() { return m_dma_complete_cb.bind(); }
u16 system_dma_status_r();
void system_dma_status_w(u16 data);
u16 system_dma_memtype_r();
void system_dma_memtype_w(u16 data);
void write_dma_params(int channel, int offset, u16 data);
u16 read_dma_params(int channel, int offset);
u16 system_dma_params_channel0_r(offs_t offset);
void system_dma_params_channel0_w(offs_t offset, u16 data);
u16 system_dma_params_channel1_r(offs_t offset);
void system_dma_params_channel1_w(offs_t offset, u16 data);
u16 system_dma_params_channel2_r(offs_t offset);
void system_dma_params_channel2_w(offs_t offset, u16 data);
u16 system_dma_params_channel3_r(offs_t offset);
void system_dma_params_channel3_w(offs_t offset, u16 data);
protected:
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
void trigger_systemm_dma(int channel);
private:
u16 m_system_dma_memtype;
u16 m_dma_params[8][4];
u8 m_dma_latched[4];
u16 m_dma_status;
devcb_read16 m_space_read_cb;
devcb_write16 m_space_write_cb;
devcb_write_line m_dma_complete_cb;
};
DECLARE_DEVICE_TYPE(GPL_DMA, gpl_dma_device)
#endif // MAME_MACHINE_GENERALPLUS_GPL_DMA_H
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