From e9421244c6b708acaad28ddbae6145306c2198e9 Mon Sep 17 00:00:00 2001
From: David Haywood <mamehaze@users.noreply.github.com>
Date: Thu, 30 Jul 2015 20:41:35 +0100
Subject: [PATCH] new NOT WORKING Sega Picture Magic

(it's a 32x PCB attached to a custom stripped down 68k base board instead of a MD, likely that the internal boot roms for the SH2s differ however)
---
 scripts/target/mame/mess.lua |  1 +
 src/mame/mess.lst            |  1 +
 src/mess/drivers/segapm.c    | 80 ++++++++++++++++++++++++++++++++++++
 3 files changed, 82 insertions(+)
 create mode 100644 src/mess/drivers/segapm.c

diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index abfaa3dd801..3ae12939ba9 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -2113,6 +2113,7 @@ files {
 	MAME_DIR .. "src/mess/drivers/megadriv.c",  
 	MAME_DIR .. "src/mess/drivers/saturn.c",    
 	MAME_DIR .. "src/mess/drivers/segapico.c",  
+	MAME_DIR .. "src/mess/drivers/segapm.c",  
 	MAME_DIR .. "src/mess/drivers/sg1000.c",    
 	MAME_DIR .. "src/mess/drivers/sms.c",
 	MAME_DIR .. "src/mess/machine/sms.c", 
diff --git a/src/mame/mess.lst b/src/mame/mess.lst
index d43d941981e..983b9f3bb87 100644
--- a/src/mame/mess.lst
+++ b/src/mame/mess.lst
@@ -99,6 +99,7 @@ multmega  // 1994 Sega Multi-Mega (Europe)
 32xe
 32xj
 32x_scd   // 1994 Sega Sega CD (USA w/32X addon)
+segapm	  // 1996 Sega Picture Magic (32x type hardware)
 
 saturnjp  // 1994 Sega Saturn (Japan)
 saturn  // 1995 Sega Saturn (USA)
diff --git a/src/mess/drivers/segapm.c b/src/mess/drivers/segapm.c
new file mode 100644
index 00000000000..34d7488e8b3
--- /dev/null
+++ b/src/mess/drivers/segapm.c
@@ -0,0 +1,80 @@
+/* Sega Picture Magic (codename JANUS) */
+// http://segaretro.org/Sega_Picture_Magic
+
+// this uses a Sega 32X PCB (not in a 32X case) attached to a stripped down 68k based board rather than a full Genesis / Megadrive
+// it is likely the internal SH2 bios roms differ
+
+
+#include "emu.h"
+#include "cpu/m68000/m68000.h"
+
+
+class segapm_state : public driver_device
+{
+public:
+	segapm_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag),
+		m_maincpu(*this, "maincpu")
+	{ }
+
+	virtual void video_start();
+	UINT32 screen_update_segapm(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+	required_device<cpu_device> m_maincpu;
+};
+
+
+void segapm_state::video_start()
+{
+}
+
+UINT32 segapm_state::screen_update_segapm(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+	return 0;
+}
+
+
+
+static ADDRESS_MAP_START( segapm_map, AS_PROGRAM, 16, segapm_state )
+	AM_RANGE(0x000000, 0x07ffff) AM_ROM
+
+	// A15100
+
+	AM_RANGE(0xe00000, 0xe7ffff) AM_RAM
+
+ADDRESS_MAP_END
+
+static INPUT_PORTS_START( segapm )
+INPUT_PORTS_END
+
+
+
+
+static MACHINE_CONFIG_START( segapm, segapm_state )
+
+	MCFG_CPU_ADD("maincpu", M68000, 8000000) // ??
+	MCFG_CPU_PROGRAM_MAP(segapm_map)
+
+	// + 2 sh2s on 32x board
+
+	MCFG_SCREEN_ADD("screen", RASTER)
+	MCFG_SCREEN_REFRESH_RATE(60)
+	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
+	MCFG_SCREEN_SIZE(32*8, 32*8)
+	MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
+	MCFG_SCREEN_UPDATE_DRIVER(segapm_state, screen_update_segapm)
+	MCFG_SCREEN_PALETTE("palette")
+
+	MCFG_PALETTE_ADD("palette", 0x200)
+	MCFG_PALETTE_FORMAT(xRRRRRGGGGGBBBBB)
+MACHINE_CONFIG_END
+
+
+
+ROM_START( segapm ) // was more than one cartridge available? if so softlist them?
+	ROM_REGION( 0x80000, "maincpu", 0 ) /* 68000 Code */
+	ROM_LOAD( "picture magic boot cart (j) [!].bin", 0x00000, 0x80000, CRC(c9ab4e60) SHA1(9c4d4ab3e59c8acde86049a1ba3787aa03b549a3) ) // internal header is GOUSEI HENSYUU
+
+	// todo, sh2 bios roms etc.
+ROM_END
+
+GAME( 1996, segapm,    0,        segapm,    segapm, driver_device,    0, ROT0,  "Sega", "Picture Magic", MACHINE_NO_SOUND | MACHINE_NOT_WORKING )