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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)
This commit is contained in:
David Haywood 2015-07-30 20:41:35 +01:00
parent 29cbed88e3
commit e9421244c6
3 changed files with 82 additions and 0 deletions
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1
scripts/target/mame/mess.lua
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@ -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",

1
src/mame/mess.lst
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@ -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)

80
src/mess/drivers/segapm.c Normal file
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@ -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 )