From 05209630d3b3d3ee2e99014848d97c3f29613b3b Mon Sep 17 00:00:00 2001
From: David Haywood <mamehaze@users.noreply.github.com>
Date: Sun, 29 Nov 2015 20:02:52 +0000
Subject: [PATCH] another (nw)

---
 scripts/target/mame/arcade.lua |  1 +
 src/mame/arcade.lst            |  3 ++
 src/mame/drivers/scm_500.cpp   | 84 ++++++++++++++++++++++++++++++++++
 3 files changed, 88 insertions(+)
 create mode 100644 src/mame/drivers/scm_500.cpp

diff --git a/scripts/target/mame/arcade.lua b/scripts/target/mame/arcade.lua
index a0c6af76444..e26e8cf96c3 100644
--- a/scripts/target/mame/arcade.lua
+++ b/scripts/target/mame/arcade.lua
@@ -4442,6 +4442,7 @@ files {
 	MAME_DIR .. "src/mame/drivers/savquest.cpp",
 	MAME_DIR .. "src/mame/drivers/sanremo.cpp",
 	MAME_DIR .. "src/mame/drivers/sealy.cpp",
+	MAME_DIR .. "src/mame/drivers/scm_500.cpp",
 	MAME_DIR .. "src/mame/drivers/sfbonus.cpp",
 	MAME_DIR .. "src/mame/drivers/shangkid.cpp",
 	MAME_DIR .. "src/mame/includes/shangkid.h",
diff --git a/src/mame/arcade.lst b/src/mame/arcade.lst
index 4f0877575ea..9a8d52c67f4 100644
--- a/src/mame/arcade.lst
+++ b/src/mame/arcade.lst
@@ -32520,3 +32520,6 @@ wackygtr   // Wacky Gator
 amerihok
 
 ice_tbd // ICE - Turbo Drive
+
+scm_500
+
diff --git a/src/mame/drivers/scm_500.cpp b/src/mame/drivers/scm_500.cpp
new file mode 100644
index 00000000000..e1b699b3708
--- /dev/null
+++ b/src/mame/drivers/scm_500.cpp
@@ -0,0 +1,84 @@
+// 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")
+		{ }
+
+	virtual void machine_start();
+	virtual void machine_reset();
+//	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()
+{
+}
+
+static MACHINE_CONFIG_START( scm_500, scm_500_state )
+
+	// 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+1)) /* Note '+1' */
+
+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, driver_device,  0, ROT0, "Standard Change-Makers", "Standard Change-Makers System 500 / 500E", MACHINE_IS_SKELETON_MECHANICAL )
+// 1995 - 500E - same basic hw?