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// license:BSD-3-Clause
// copyright-holders:David Haywood
/*

http://www.standardchange.com/frequently-asked-questions

"The System 500 series note acceptor was sold in change machines from 1987 to 1994"

"The System 500E series note acceptor replaced the System 500 note acceptor in 1995."

*/

#include "emu.h"

class scm_500_state : public driver_device
{
public:
	scm_500_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
//      ,m_maincpu(*this, "maincpu")
		{ }

	void scm_500(machine_config &config);

private:
	virtual void machine_start() override;
	virtual void machine_reset() override;
//  required_device<cpu_device> m_maincpu;
};


static INPUT_PORTS_START( scm_500 )
INPUT_PORTS_END

void scm_500_state::machine_start()
{
}

void scm_500_state::machine_reset()
{
}

MACHINE_CONFIG_START(scm_500_state::scm_500)

	// unknown CPU

MACHINE_CONFIG_END

/*

this is the Eprom for the new $$ for the system 500  changers.

device is a 27c512

4_42 is latest version
for both system 500 and 500E


----------------------------------------------------------

4.26 and 4.27, 4.28  are older versions of program.

Std-chan is most current program.

500E-3.07 is for the 500E system,

*/

#define ROM_LOAD_BIOS(bios,name,offset,length,hash) \
	ROMX_LOAD(name, offset, length, hash, ROM_BIOS(bios))

ROM_START( scm_500 )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_SYSTEM_BIOS( 0, "usa_442",   "USA 4.42" ) \
	ROM_LOAD_BIOS( 0, "stndxgr_442", 0x00000, 0x10000, CRC(7e641cfa) SHA1(5c9ed9551f3c0496bc6c810375595e821a2eb75d)  ) // USA 04.42 (for 500 and 500E)
	ROM_SYSTEM_BIOS( 1, "usa_431",   "USA 4.31" ) \
	ROM_LOAD_BIOS( 1, "stndxgr_431", 0x00000, 0x10000, CRC(66a179d7) SHA1(3cdb06917616b57e3e3947007f6e2d923fb592a2)  ) // USA 04.31
	ROM_SYSTEM_BIOS( 2, "usa_427",   "USA 4.27" ) \
	ROM_LOAD_BIOS( 2, "stndxgr_427", 0x00000, 0x10000, CRC(908cda2f) SHA1(2a32922305b8201c25310679d5dd02f0951a4985)  ) // USA 04.27
	ROM_SYSTEM_BIOS( 3, "usa_426",   "USA 4.26" ) \
	ROM_LOAD_BIOS( 3, "stndxgr_426", 0x00000, 0x10000, CRC(fa459c77) SHA1(cafbde4256cf69ae422a700adfadeeaec4af53d3)  ) // USA 04.36
	ROM_SYSTEM_BIOS( 4, "usa_307",   "USA 3.07" ) \
	ROM_LOAD_BIOS( 4, "stndxgr_307", 0x00000, 0x10000, CRC(4d0d91c6) SHA1(85ff5d43ec331bcd4cde6aaf82f6143acc7e020c)  ) // USA 03.07 (could be 500E specific)
ROM_END

GAME( 1987, scm_500,  0,    scm_500, scm_500, scm_500_state, empty_init, ROT0, "Standard Change-Makers", "Standard Change-Makers System 500 / 500E", MACHINE_IS_SKELETON_MECHANICAL )
// 1995 - 500E - same basic hw?