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// license:BSD-3-Clause
// copyright-holders:Sergey Svishchev
/**********************************************************************

    Poisk-1 HDC device (model B942)

**********************************************************************/

#include "emu.h"
#include "p1_hdc.h"


//**************************************************************************
//  MACROS / CONSTANTS
//**************************************************************************

//#define LOG_GENERAL (1U <<  0) //defined in logmacro.h already
#define LOG_DEBUG     (1U <<  1)

//#define VERBOSE (LOG_DEBUG)
//#define LOG_OUTPUT_FUNC printf
#include "logmacro.h"

#define LOGDBG(...) LOGMASKED(LOG_DEBUG, __VA_ARGS__)


//**************************************************************************
//  DEVICE DEFINITIONS
//**************************************************************************

DEFINE_DEVICE_TYPE(P1_HDC, p1_hdc_device, "p1_hdc", "Poisk-1 MFM disk B942")


//-------------------------------------------------
//  ROM( p1_hdc )
//-------------------------------------------------

ROM_START( p1_hdc )
	ROM_REGION( 0x0800, "p1_hdc", 0 )
	ROM_DEFAULT_BIOS("v17")
	ROM_SYSTEM_BIOS(0, "v11", "ver 1.1") // (c) S. Kovalenko, 1990
	ROMX_LOAD( "b_hd_v11.rf2", 0x00000, 0x0800, CRC(a19c39b2) SHA1(57faa56b320abf801fedbed578cf97d253e5b777), ROM_BIOS(0))
	ROM_SYSTEM_BIOS(1, "v12", "ver 1.2") // (c) S. Kovalenko, 1991
	ROMX_LOAD( "p_hdd_nm.bin", 0x00000, 0x0800, CRC(d5f8e4cc) SHA1(5b533642df30958539715f87a7f25b0d66dd0861), ROM_BIOS(1))
	ROM_SYSTEM_BIOS(2, "v14", "ver 1.4") // (c) `.lesnyh. , 1992
	ROMX_LOAD( "b942_5mb.bin", 0x00000, 0x0800, CRC(a3cfa240) SHA1(0b0aa1ce839a957153bfbbe70310480ca9fe21b6), ROM_BIOS(2))
	ROM_SYSTEM_BIOS(3, "v17", "ver 1.7") // (c) S. Kovalenko, 1992
	ROMX_LOAD( "b942_v17.rom", 0x00000, 0x0800, CRC(869672e3) SHA1(5cf2ae0ec1fa3edb3fe882c805da0bbc3ac21792), ROM_BIOS(3))
ROM_END


//-------------------------------------------------
//  device_add_mconfig - add device configuration
//-------------------------------------------------

void p1_hdc_device::device_add_mconfig(machine_config &config)
{
	WD2010(config, m_hdc, 5'000'000); // XXX clock?
	m_hdc->in_drdy_callback().set_constant(1);
	m_hdc->in_index_callback().set_constant(1);
	m_hdc->in_wf_callback().set_constant(1);
	m_hdc->in_tk000_callback().set_constant(1);
	m_hdc->in_sc_callback().set_constant(1);

	HARDDISK(config, "hard0", 0);
	HARDDISK(config, "hard1", 0);
}


//-------------------------------------------------
//  rom_region - device-specific ROM region
//-------------------------------------------------

const tiny_rom_entry *p1_hdc_device::device_rom_region() const
{
	return ROM_NAME(p1_hdc);
}


//**************************************************************************
//  LIVE DEVICE
//**************************************************************************


uint8_t p1_hdc_device::p1_HDC_r(offs_t offset)
{
	uint8_t data = 0x00;

	switch (offset >> 8)
	{
	case 8:
		data = m_hdc->read(offset & 255);
	}
	LOG("hdc R $%04x == $%02x\n", offset, data);

	return data;
}

void p1_hdc_device::p1_HDC_w(offs_t offset, uint8_t data)
{
	LOG("hdc W $%04x <- $%02x\n", offset, data);

	switch (offset >> 8)
	{
	case 8:
		m_hdc->write(offset & 255, data);
	}
}

//-------------------------------------------------
//  p1_hdc_device - constructor
//-------------------------------------------------

p1_hdc_device::p1_hdc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
	: device_t(mconfig, P1_HDC, tag, owner, clock)
	, device_isa8_card_interface(mconfig, *this)
	, m_hdc(*this, "d17")
{
}


//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void p1_hdc_device::device_start()
{
	set_isa_device();
	m_isa->install_rom(this, 0xe2000, 0xe27ff, "XXX", "p1_hdc");
	m_isa->install_memory(0xd0000, 0xd0fff, read8sm_delegate(*this, FUNC(p1_hdc_device::p1_HDC_r)), write8sm_delegate(*this, FUNC(p1_hdc_device::p1_HDC_w)));
}


//-------------------------------------------------
//  device_reset - device-specific reset
//-------------------------------------------------

void p1_hdc_device::device_reset()
{
}