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path: root/src/devices/bus/s100/nsmdsad.cpp
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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************

    North Star MICRO-DISK System MDS-A-D (Double Density) emulation

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

#include "emu.h"
#include "nsmdsad.h"



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

DEFINE_DEVICE_TYPE(S100_MDS_AD, s100_mds_ad_device, "s100_nsmdsad", "North Star MDS-A-D")


//-------------------------------------------------
//  ROM( mds_ad )
//-------------------------------------------------

ROM_START( mds_ad )
	ROM_REGION( 0x100, "dsel", 0 )
	ROM_LOAD( "dsel.11c", 0x000, 0x100, NO_DUMP ) // 82S129

	ROM_REGION( 0x100, "dpgm", 0 )
	ROM_LOAD( "dpgm.9d", 0x000, 0x100, CRC(7aafa134) SHA1(bf1552c4818f30473798af4f54e65e1957e0db48) )

	ROM_REGION( 0x100, "dwe", 0 )
	ROM_LOAD( "dwe.4c", 0x000, 0x100, NO_DUMP ) // 82S129
ROM_END


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

const tiny_rom_entry *s100_mds_ad_device::device_rom_region() const
{
	return ROM_NAME( mds_ad );
}


//-------------------------------------------------
//  SLOT_INTERFACE( mds_ad_floppies )
//-------------------------------------------------

static void mds_ad_floppies(device_slot_interface &device)
{
	device.option_add("525dd", FLOPPY_525_DD); // Shugart SA-400
}


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

MACHINE_CONFIG_START(s100_mds_ad_device::device_add_mconfig)
	MCFG_FLOPPY_DRIVE_ADD("floppy0", mds_ad_floppies, "525dd", floppy_image_device::default_floppy_formats)
	MCFG_FLOPPY_DRIVE_ADD("floppy1", mds_ad_floppies, "525dd", floppy_image_device::default_floppy_formats)
MACHINE_CONFIG_END



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

//-------------------------------------------------
//  s100_mds_ad_device - constructor
//-------------------------------------------------

s100_mds_ad_device::s100_mds_ad_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
	device_t(mconfig, S100_MDS_AD, tag, owner, clock),
	device_s100_card_interface(mconfig, *this),
	m_floppy0(*this, "floppy0"),
	m_floppy1(*this, "floppy1"),
	m_dsel_rom(*this, "dsel"),
	m_dpgm_rom(*this, "dpgm"),
	m_dwe_rom(*this, "dwe")
{
}


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

void s100_mds_ad_device::device_start()
{
}


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

void s100_mds_ad_device::device_reset()
{
}


//-------------------------------------------------
//  s100_smemr_r - memory read
//-------------------------------------------------

uint8_t s100_mds_ad_device::s100_smemr_r(address_space &space, offs_t offset)
{
	return 0;
}