From ec9aae77c689235444bf1e9e9596aa29ae74ea3c Mon Sep 17 00:00:00 2001
From: mamehaze <140764005+mamehaze@users.noreply.github.com>
Date: Fri, 2 Aug 2024 20:18:14 +0100
Subject: [PATCH] skeleton/koto_zevio.cpp: Added a skeleton driver for TV games
 using the Koto Laboratory Zevio SoC. (#12632)

New systems marked not working
------------------------
Bandai / Koto Dragon Ball Z x One Piece: Battle Taikan Gum-Gum no Kamehameha: Omee no Koe de Ora o Yobu (Japan) [David Haywood, TeamEurope]
---
 src/mame/mame.lst                |   3 +
 src/mame/skeleton/koto_zevio.cpp | 113 +++++++++++++++++++++++++++++++
 2 files changed, 116 insertions(+)
 create mode 100644 src/mame/skeleton/koto_zevio.cpp

diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 87e540f097e..1fb361e9090 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -42138,6 +42138,9 @@ junior80                        //
 @source:skeleton/kkcount.cpp
 kkcount
 
+@source:skeleton/koto_zevio.cpp
+dbzonep                         //
+
 @source:skeleton/kron.cpp
 kron180                         // 1995 Kron Ltd, Ukraine
 
diff --git a/src/mame/skeleton/koto_zevio.cpp b/src/mame/skeleton/koto_zevio.cpp
new file mode 100644
index 00000000000..292bcf5dbe2
--- /dev/null
+++ b/src/mame/skeleton/koto_zevio.cpp
@@ -0,0 +1,113 @@
+// license:BSD-3-Clause
+// copyright-holders:David Haywood
+
+// The Zevio SoC was developed by Koto Laboratory, the same company behind the Wonderswan 
+
+#include "emu.h"
+
+#include "cpu/arm7/arm7.h"
+#include "cpu/arm7/arm7core.h"
+
+#include "screen.h"
+#include "speaker.h"
+
+
+namespace {
+
+class zevio_state : public driver_device
+{
+public:
+	zevio_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_screen(*this, "screen")
+	{ }
+
+	void zevio(machine_config &config);
+
+protected:
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+
+private:
+	required_device<cpu_device> m_maincpu;
+	required_device<screen_device> m_screen;
+
+	uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
+
+	uint32_t z900b0014_r();
+	uint32_t zb8000024_r();
+
+	void arm_map(address_map &map);
+};
+
+uint32_t zevio_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
+{
+	return 0;
+}
+
+void zevio_state::machine_start()
+{
+}
+
+void zevio_state::machine_reset()
+{
+}
+
+uint32_t zevio_state::z900b0014_r()
+{
+	return machine().rand();
+}
+
+uint32_t zevio_state::zb8000024_r()
+{
+	return machine().rand();
+}
+
+static INPUT_PORTS_START( zevio )
+INPUT_PORTS_END
+
+void zevio_state::arm_map(address_map &map)
+{
+	map(0x00000000, 0x007fffff).rom().region("maincpu", 0);
+
+	map(0x10000000, 0x10ffffff).ram();
+
+	map(0x900a0f04, 0x900a0f07).nopw();
+	map(0x900b0014, 0x900b0017).r(FUNC(zevio_state::z900b0014_r));
+
+	map(0xb8000024, 0xb8000027).r(FUNC(zevio_state::zb8000024_r));
+
+	map(0xb8000800, 0xb8000fff).ram();
+}
+
+
+void zevio_state::zevio(machine_config &config)
+{
+	ARM9(config, m_maincpu, 72000000); // unknown ARM core, unknown frequency
+	m_maincpu->set_addrmap(AS_PROGRAM, &zevio_state::arm_map);
+
+	SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
+	m_screen->set_refresh_hz(60);
+	m_screen->set_size(320, 262);
+	m_screen->set_visarea(0, 320-1, 0, 240-1);
+	m_screen->set_screen_update(FUNC(zevio_state::screen_update));
+
+	SPEAKER(config, "lspeaker").front_left();
+	SPEAKER(config, "rspeaker").front_right();
+}
+
+
+ROM_START( dbzonep )
+	ROM_REGION( 0x800000, "maincpu", ROMREGION_ERASEFF )
+	ROM_LOAD( "mr27t6402l.u1", 0x000000, 0x800000, CRC(57f7c319) SHA1(65118a9c61defc75cefe5e45062c0a4788e2a26c) )
+	// original dump had the first 0x100 bytes repeated again at the end, why?
+
+	ROM_REGION( 0x800, "eeprom", ROMREGION_ERASEFF )
+	ROM_LOAD( "s24cs16a.u6", 0x000000, 0x800, CRC(a1724ea8) SHA1(93a6f73e30f47b6a0c83f62dfd9d8236473518a8) )	
+ROM_END
+
+} // anonymous namespace
+
+// 2007 - Dragon Ball Z: Scouter Battle Taikan Kamehameha: Ora to Omee to Scouter
+CONS( 2008, dbzonep,      0,              0,      zevio, zevio, zevio_state, empty_init, "Bandai / Koto", "Dragon Ball Z x One Piece: Battle Taikan Gum-Gum no Kamehameha: Omee no Koe de Ora o Yobu (Japan)", MACHINE_IS_SKELETON )