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// license:GPL-2.0+
// copyright-holders:Brandon Munger
/**********************************************************************
ROLM 9751 9005 Peripheral device controller emulation
**********************************************************************/
#ifndef MAME_MACHINE_PDC_H
#define MAME_MACHINE_PDC_H
#pragma once
#include "cpu/z80/z80.h"
#include "machine/upd765.h"
#include "machine/am9517a.h"
#include "machine/hdc92x4.h"
#include "imagedev/mfmhd.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define PDC_TAG "pdc"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> pdc_device
class pdc_device : public device_t
{
public:
/* Constructor and Destructor */
pdc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
/* Callbacks */
auto m68k_r_callback() { return m_m68k_r_cb.bind(); }
auto m68k_w_callback() { return m_m68k_w_cb.bind(); }
/* Read and Write members */
void hdd_irq(int state);
/* Main CPU accessible registers */
uint8_t reg_p0;
uint8_t reg_p1;
uint8_t reg_p2;
uint8_t reg_p3;
uint8_t reg_p4;
uint8_t reg_p5;
uint8_t reg_p6;
uint8_t reg_p7;
uint8_t reg_p21;
uint8_t reg_p38;
uint32_t fdd_68k_dma_address; /* FDD <-> m68k DMA read/write address */
protected:
/* Device-level overrides */
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
/* Optional information overrides */
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual ioport_constructor device_input_ports() const override ATTR_COLD;
virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
private:
void i8237_hreq_w(int state);
void i8237_eop_w(int state);
uint8_t i8237_dma_mem_r(offs_t offset);
void i8237_dma_mem_w(offs_t offset, uint8_t data);
uint8_t i8237_fdc_dma_r(offs_t offset);
void i8237_fdc_dma_w(offs_t offset, uint8_t data);
uint8_t m68k_dma_r();
void m68k_dma_w(uint8_t data);
void fdc_irq(int state);
uint8_t p0_7_r(offs_t offset);
void p0_7_w(offs_t offset, uint8_t data);
uint8_t fdd_68k_r(offs_t offset);
void fdd_68k_w(offs_t offset, uint8_t data);
void p38_w(uint8_t data);
uint8_t p38_r();
uint8_t p39_r();
void p50_5f_w(offs_t offset, uint8_t data);
void pdc_io(address_map &map) ATTR_COLD;
void pdc_mem(address_map &map) ATTR_COLD;
/* Protected variables */
//uint32_t fdd_68k_dma_address;
bool b_fdc_irq;
/* Attached devices */
required_device<cpu_device> m_pdccpu;
required_device<am9517a_device> m_dma8237;
required_device<upd765a_device> m_fdc;
//required_device<floppy_connector> m_floppy;
//required_device<floppy_image_device> m_floppy;
optional_device<hdc9224_device> m_hdc9224;
//mfm_harddisk_device* m_harddisk;
required_shared_ptr<uint8_t> m_pdc_ram;
/* Callbacks */
devcb_read8 m_m68k_r_cb;
devcb_write8 m_m68k_w_cb;
required_ioport m_sw1, m_sw2;
};
/* Device type */
DECLARE_DEVICE_TYPE(PDC, pdc_device)
#endif // MAME_MACHINE_PDC_H
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