mirror of
https://github.com/holub/mame
synced 2025-07-05 18:08:04 +03:00
Rewriting nss driver in progress, hooked up the security keys
This commit is contained in:
Angelo Salese
parent
f97838cf32
commit
5fa936de0b
@ -304,18 +304,6 @@ public:
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nss_state(const machine_config &mconfig, device_type type, const char *tag)
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: snes_state(mconfig, type, tag) { }
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UINT8 m_m50458_rom_bank;
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UINT8 m_vblank_bit;
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DECLARE_READ8_MEMBER(nss_eeprom_r);
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DECLARE_WRITE8_MEMBER(nss_eeprom_w);
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DECLARE_READ8_MEMBER(m50458_r);
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DECLARE_WRITE8_MEMBER(m50458_w);
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DECLARE_READ8_MEMBER(port00_r);
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DECLARE_READ8_MEMBER(port01_r);
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DECLARE_READ8_MEMBER(port02_r);
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DECLARE_READ8_MEMBER(port03_r);
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DECLARE_WRITE8_MEMBER(port80_w);
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DECLARE_WRITE8_MEMBER(port82_w);
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DECLARE_READ8_MEMBER(spc_ram_100_r);
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DECLARE_WRITE8_MEMBER(spc_ram_100_w);
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};
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@ -374,152 +362,119 @@ bp 6dce onward looks bogus, but it's probably the way it's intended to be
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M50458 charset is checked at 1382, a word checksum is provided at offsets 0xffe-0xfff of the given ROM
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*/
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/*
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Nocash info: http://nocash.emubase.de/fullsnes.htm
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map
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0x0000 - 0x7fff BIOS
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0x8000 - 0x8fff RAM
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0x9000 - 0x9fff RAM with write protection
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0xa000 EEPROM Read
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7 EEPROM Data In (0=Low=Zero, 1=High=One)
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6 EEPROM Ready (0=Low=Busy, 1=High=Ready)
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5-0 Unknown/unused
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0xc000 - 0xdfff instruction ROM
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0xe000 EEPROM Write
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7 Unknown/set (should be always 1)
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6-5 Unknown/unused (should be always 0)
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4 EEPROM Clock (0=Low=Clock, 1=High=Idle) ;(Data In/Out must be stable
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3 EEPROM Data Out (0=Low=Zero, 1=High=One) ;on raising CLK edge)
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2-1 Unknown/unused (should be always 0) ;(and updated on falling edge)
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0 EEPROM Select (0=High=No, 1=Low=Select)
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0xe000 - 0xffff PROM Input & Output & Program Code (protection RP5H01, used also in earlier Nintendo systems)
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Data Write:
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7-5 Unknown/unused
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4 PROM Test Mode (0=Low=6bit Address, 1=High=7bit Address)
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3 PROM Clock (0=Low, 1=High) ;increment address on 1-to-0 transition
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2-1 Unknown/unused
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0 PROM Address Reset (0=High=Reset to zero, 1=Low=No Change)
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READ8_MEMBER(nss_state::nss_eeprom_r)
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{
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return 0x40; // eeprom read bit
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}
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Data Read and Opcode Fetch:
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WRITE8_MEMBER(nss_state::nss_eeprom_w)
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{
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/*
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x--- ---- EEPROM CS bit?
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---x ---- EEPROM clock bit?
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---- x--- EEPROM write bit
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---- ---x EEPROM reset bit? (active low)
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*/
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7-5 Always set (MSBs of RST Opcode)
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4 PROM Counter Out (0=High=One, 1=Low=Zero) ;PROM Address Bit5
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3 PROM Data Out (0=High=One, 1=Low=Zero)
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2-0 Always set (LSBs of RST Opcode)
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// printf("EEPROM write %02x\n",data);
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}
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i/o
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Input
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0x00 Joypad
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7 SNES Watchdog (0=SNES did read Joypads, 1=Didn't do so) (ack via 07h.W)
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6 Vblank or Vsync or so (0=What, 1=What?)
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5 Button "Joypad Button B?" (0=Released, 1=Pressed)
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4 Button "Joypad Button A" (0=Released, 1=Pressed)
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3 Button "Joypad Down" (0=Released, 1=Pressed)
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2 Button "Joypad Up" (0=Released, 1=Pressed)
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1 Button "Joypad Left" (0=Released, 1=Pressed)
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0 Button "Joypad Right" (0=Released, 1=Pressed)
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0x01 Front-Panel Buttons and Game Over Flag
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7 From SNES Port 4016h.W.Bit2 (0=Game Over Flag, 1=Normal) (Inverted!)
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6 Button "Restart" (0=Released, 1=Pressed) ;-also resets SNES?
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5 Button "Page Up" (0=Released, 1=Pressed)
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4 Button "Page Down" (0=Released, 1=Pressed)
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3 Button "Instructions" (0=Released, 1=Pressed)
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2 Button "Game 3" (0=Released, 1=Pressed) ;\if present (single
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1 Button "Game 2" (0=Released, 1=Pressed) ; cartridge mode does
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0 Button "Game 1" (0=Released, 1=Pressed) ;/without them)
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0x02 Coin and Service Button Inputs
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7-3 Unknown/unused (maybe the (unused) Test button hides here)
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2 Service Button (1=Pressed: Add Credit; with INST button: Config)
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1 Coin Input 2 (1=Coin inserted in coin-slot 2)
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0 Coin Input 1 (1=Coin inserted in coin-slot 1)
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0x03 RTC
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Output
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0x00/0x80 NMI Control and RAM protect
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7-4 Unknown/unused (should be always 0)
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3 Maybe SNES CPU/PPU reset (usually same as Port 01h.W.Bit1)
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2 RAM at 9000h-9FFFh (0=Disable/Protect, 1=Enable/Unlock)
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1 Looks like maybe somehow NMI Related ? ;\or one of these is PC10-style
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0 Looks like NMI Enable ;/hardware-watchdog reload?
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0x01/0x81 Unknown and Slot Select
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7 Maybe SNES Joypad Enable? (0=Disable/Demo, 1=Enable/Game)
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6 Unknown/unused (should be always 0)
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5 SNES Sound Mute (0=Normal, 1=Mute) (for optional mute in demo mode)
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4 Unknown ;from INST-ROM flag! (Lo/HiROM, 2-player, zapper, volume or so?)
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3-2 Slot Select (0..2 for Slot 1..3) (mapping to both SNES and Z80)
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1 Maybe SNES CPU pause? (cleared on deposit coin to continue) (1=Run)
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0 Maybe SNES CPU/PPU reset? (0=Reset, 1=Run)
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0x02/0x82 RTC and OSD
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0x03/0x83 Unknown and LED control
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7 Layer SNES Enable? (used by token proc, see 7A46h) SNES?
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6 Layer OSD Enable?
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5-4 Unknown/unused (should be always 0)
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3 LED Instructions (0=Off, 1=On) ;-glows in demo (prompt for INST button)
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2 LED Game 3 (0=Off, 1=On) ;\
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1 LED Game 2 (0=Off, 1=On) ; blinked when enough credits inserted
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0 LED Game 1 (0=Off, 1=On) ;/
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0x84 Coin Counter Outputs
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7-2 Unknown/unused (should be always 0)
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1 Coin Counter 2 (0=No change, 1=Increment external counter)
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0 Coin Counter 1 (0=No change, 1=Increment external counter)
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0x05 Unknown
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0x07 SNES Watchdog / Acknowledge SNES Joypad Read Flag
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SNES part:
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0x4100 DSW
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0x4016 bit 0 Joypad Strobe?
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0x4016 bit 2 Game Over Flag
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READ8_MEMBER(nss_state::m50458_r)
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{
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if(m_m50458_rom_bank)
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{
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UINT8 *gfx_rom = memregion("m50458_gfx")->base();
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return gfx_rom[offset & 0xfff];
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}
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else
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{
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UINT8 *gfx_ram = memregion("m50458_vram")->base();
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return gfx_ram[offset & 0xfff];
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}
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return 0;
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}
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WRITE8_MEMBER(nss_state::m50458_w)
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{
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if(m_m50458_rom_bank)
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logerror("Warning: write to M50458 GFX ROM!\n");
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else
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{
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UINT8 *gfx_ram = memregion("m50458_vram")->base();
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gfx_ram[offset & 0xfff] = data;
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}
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}
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*/
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static ADDRESS_MAP_START( bios_map, AS_PROGRAM, 8, nss_state )
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AM_RANGE(0x0000, 0x7fff) AM_ROMBANK("bank1")
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AM_RANGE(0x8000, 0x87ff) AM_RAM
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AM_RANGE(0x8800, 0x8fff) AM_RAM // vram perhaps?
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AM_RANGE(0x9000, 0x9fff) AM_READWRITE(m50458_r,m50458_w) // M50458 vram & GFX rom routes here
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AM_RANGE(0xa000, 0xa000) AM_READ(nss_eeprom_r)
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AM_RANGE(0xe000, 0xe000) AM_WRITE(nss_eeprom_w)
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AM_RANGE(0xc000, 0xdfff) AM_MIRROR(0x2000) AM_RAM AM_REGION("ibios_rom", 0x6000)
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AM_RANGE(0x0000, 0x7fff) AM_ROM
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ADDRESS_MAP_END
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READ8_MEMBER(nss_state::port00_r)
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{
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/*
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-x-- ---- almost certainly tied to the vblank signal
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*/
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m_vblank_bit^=0x40;
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return m_vblank_bit | 0xbf;
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}
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READ8_MEMBER(nss_state::port01_r)
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{
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return 0xff;
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}
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READ8_MEMBER(nss_state::port02_r)
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{
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/*
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---- -x-- (makes the BIOS to jump at 0x4258, sets 0x80 bit 1 and then jumps to unmapped area of the BIOS (bankswitch?))
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---- ---x
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*/
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return 0xfb;
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}
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READ8_MEMBER(nss_state::port03_r)
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{
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/*
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x--- ---- EEPROM2 read bit
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---- ---x tested at 7006, some status bit
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*/
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return 0xfe;
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}
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WRITE8_MEMBER(nss_state::port80_w)
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{
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/*
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---- -x-- written when 0x9000-0x9fff is read, probably a bankswitch
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---- --x- see port 0x02 note
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---- ---x BIOS bankswitch
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*/
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membank("bank1")->set_entry(data & 1);
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m_m50458_rom_bank = data & 4;
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}
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WRITE8_MEMBER(nss_state::port82_w)// EEPROM2?
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{
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/*
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---- x--- EEPROM2 clock bit?
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---- -x-- EEPROM2 write bit
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---- --x- EEPROM2 CS bit?
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*/
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}
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static ADDRESS_MAP_START( bios_io_map, AS_IO, 8, nss_state )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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AM_RANGE(0x00, 0x00) AM_READ(port00_r)
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AM_RANGE(0x01, 0x01) AM_READ(port01_r)
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AM_RANGE(0x02, 0x02) AM_READ(port02_r)
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AM_RANGE(0x03, 0x03) AM_READ(port03_r)
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AM_RANGE(0x72, 0x72) AM_WRITENOP //?
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AM_RANGE(0x80, 0x80) AM_WRITE(port80_w)
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AM_RANGE(0x82, 0x82) AM_WRITE(port82_w)
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AM_RANGE(0xea, 0xea) AM_WRITENOP //?
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ADDRESS_MAP_END
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static MACHINE_START( nss )
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{
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nss_state *state = machine.driver_data<nss_state>();
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UINT8 *ROM = state->memregion("bios")->base();
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state->membank("bank1")->configure_entries(0, 2, &ROM[0x10000], 0x8000);
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state->membank("bank1")->set_entry(0);
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state->m_m50458_rom_bank = 0;
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// nss_state *state = machine.driver_data<nss_state>();
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MACHINE_START_CALL(snes);
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}
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@ -722,8 +677,8 @@ MACHINE_CONFIG_END
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ROM_REGION(0x10000, "addons", ROMREGION_ERASE00) /* add-on chip ROMs (DSP1 will be needed if we dump the NSS version of Super Mario Kart)*/\
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ROM_LOAD( "dsp1b.bin", SNES_DSP1B_OFFSET, 0x002800, CRC(453557e0) SHA1(3a218b0e4572a8eba6d0121b17fdac9529609220) ) \
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ROM_REGION(0x20000, "bios", 0) /* Bios CPU (what is it?) */ \
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ROM_LOAD("nss-c.dat" , 0x10000, 0x8000, CRC(a8e202b3) SHA1(b7afcfe4f5cf15df53452dc04be81929ced1efb2) ) /* bios */ \
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ROM_LOAD("nss-ic14.02", 0x18000, 0x8000, CRC(e06cb58f) SHA1(62f507e91a2797919a78d627af53f029c7d81477) ) /* bios */ \
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ROM_LOAD("nss-c.dat" , 0x00000, 0x8000, CRC(a8e202b3) SHA1(b7afcfe4f5cf15df53452dc04be81929ced1efb2) ) /* bios */ \
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ROM_LOAD("nss-ic14.02", 0x10000, 0x8000, CRC(e06cb58f) SHA1(62f507e91a2797919a78d627af53f029c7d81477) ) /* bios */ \
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ROM_REGION( 0x1200, "chargen", ROMREGION_ERASEFF ) \
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ROM_LOAD("m50458_char.bin", 0x0000, 0x1200, BAD_DUMP CRC(011cc342) SHA1(d5b9f32d6e251b4b25945267d7c68c099bd83e96) ) \
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ROM_REGION( 0x1000, "m50458_gfx", ROMREGION_ERASEFF ) \
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@ -740,8 +695,9 @@ ROM_START( nss )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", ROMREGION_ERASEFF )
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ROM_END
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
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ROM_END
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ROM_START( nss_actr )
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NSS_BIOS
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@ -752,6 +708,9 @@ ROM_START( nss_actr )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", 0 )
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ROM_LOAD( "act-rais.ic8", 0x0000, 0x8000, CRC(08b38ce6) SHA1(4cbb7fd28d98ffef0f17747201625883af954e3a) )
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
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ROM_LOAD( "security.prm", 0x000000, 0x000010, CRC(4b74ac55) SHA1(51ea71b06367b4956a4b737385e2d4d15bd43980) )
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ROM_END
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ROM_START( nss_con3 )
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@ -763,6 +722,9 @@ ROM_START( nss_con3 )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", 0 )
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ROM_LOAD( "contra3.ic8", 0x0000, 0x8000, CRC(0fbfa23b) SHA1(e7a1a78a58c64297e7b9623350ec57aed8035a4f) )
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
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ROM_LOAD( "security.prm", 0x000000, 0x000010, NO_DUMP )
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ROM_END
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ROM_START( nss_adam )
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@ -774,6 +736,9 @@ ROM_START( nss_adam )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", 0 )
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ROM_LOAD( "addams.ic8", 0x0000, 0x8000, CRC(57c7f72c) SHA1(2e3642b4b5438f6c535d6d1eb668e1663062cf78) )
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
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ROM_LOAD( "security.prm", 0x000000, 0x000010, CRC(154d10c2) SHA1(6829e149c341b753ee9bc72055c0634db4e81884) )
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ROM_END
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ROM_START( nss_aten )
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@ -785,6 +750,9 @@ ROM_START( nss_aten )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", 0 )
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ROM_LOAD( "amtennis.ic8", 0x0000, 0x8000, CRC(d2cd3926) SHA1(49fc253b1b9497ef1374c7db0bd72c163ffb07e7) )
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
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ROM_LOAD( "security.prm", 0x000000, 0x000010,CRC(3e640fa2) SHA1(ac530610a9d4979f070d5f57dfd4886c530aa20f) )
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ROM_END
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ROM_START( nss_rob3 )
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@ -796,6 +764,9 @@ ROM_START( nss_rob3 )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", 0 )
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ROM_LOAD( "robocop3.ic8", 0x0000, 0x8000, CRC(90d13c51) SHA1(6751dab14b7d178350ac333f07dd2c3852e4ae23) )
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
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ROM_LOAD( "security.prm", 0x000000, 0x000010, NO_DUMP )
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ROM_END
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ROM_START( nss_ncaa )
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@ -807,6 +778,9 @@ ROM_START( nss_ncaa )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", 0 )
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ROM_LOAD( "ncaa.ic8", 0x0000, 0x8000, CRC(b9fa28d5) SHA1(bc538bcff5c19eae4becc6582b5c111d287b76fa) )
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
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ROM_LOAD( "security.prm", 0x000000, 0x000010, CRC(a2e9ad5b) SHA1(a41f82451fc185f8e989a0d4f38700dc7813bb50) )
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ROM_END
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ROM_START( nss_skin )
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@ -818,6 +792,9 @@ ROM_START( nss_skin )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", 0 )
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ROM_LOAD( "skins.ic8", 0x0000, 0x8000, CRC(9f33d5ce) SHA1(4d279ad3665bd94c7ca9cb2778572bed42c5b298) )
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
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ROM_LOAD( "security.prm", 0x000000, 0x000010, CRC(86f8cd1d) SHA1(d567d194058568f4ae32b7726e433918b06bca54) )
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ROM_END
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ROM_START( nss_lwep )
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@ -829,6 +806,9 @@ ROM_START( nss_lwep )
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/* instruction / data rom for bios */
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ROM_REGION( 0x8000, "ibios_rom", 0 )
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ROM_LOAD( "nss-lw.ic8", 0x0000, 0x8000, CRC(1acc1d5d) SHA1(4c8b100ac5847915aaf3b5bfbcb4f632606c97de) )
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ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
|
||||
ROM_LOAD( "security.prm", 0x000000, 0x000010, CRC(e9755c14) SHA1(d8dbebf3536dcbd18c50ba11a6b729dc7085f74b) )
|
||||
ROM_END
|
||||
|
||||
ROM_START( nss_ssoc )
|
||||
@ -839,6 +819,9 @@ ROM_START( nss_ssoc )
|
||||
/* instruction / data rom for bios */
|
||||
ROM_REGION( 0x8000, "ibios_rom", 0 )
|
||||
ROM_LOAD( "s-soccer.ic3", 0x0000, 0x8000, CRC(c09211c3) SHA1(b274a57f93ae0a8774664df3d3615fb7dbecfa2e) )
|
||||
|
||||
ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
|
||||
ROM_LOAD( "security.prm", 0x000000, 0x000010, NO_DUMP )
|
||||
ROM_END
|
||||
|
||||
ROM_START( nss_smw )
|
||||
@ -849,6 +832,9 @@ ROM_START( nss_smw )
|
||||
/* instruction / data rom for bios */
|
||||
ROM_REGION( 0x8000, "ibios_rom", 0 )
|
||||
ROM_LOAD( "mw.ic3", 0x0000, 0x8000, CRC(f2c5466e) SHA1(e116f01342fcf359498ed8750741c139093b1fb2) )
|
||||
|
||||
ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
|
||||
ROM_LOAD( "security.prm", 0x000000, 0x000010, NO_DUMP )
|
||||
ROM_END
|
||||
|
||||
ROM_START( nss_fzer )
|
||||
@ -859,6 +845,9 @@ ROM_START( nss_fzer )
|
||||
/* instruction / data rom for bios */
|
||||
ROM_REGION( 0x8000, "ibios_rom", 0 )
|
||||
ROM_LOAD( "fz.ic7", 0x0000, 0x8000, CRC(48ae570d) SHA1(934f9fec47dcf9e49936388968d2db50c69950da) )
|
||||
|
||||
ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
|
||||
ROM_LOAD( "security.prm", 0x000000, 0x000010, CRC(9650a7d0) SHA1(59d57ab2720cff3a24105a7250560c41def45acc) )
|
||||
ROM_END
|
||||
|
||||
ROM_START( nss_sten )
|
||||
@ -869,8 +858,13 @@ ROM_START( nss_sten )
|
||||
/* instruction / data rom for bios */
|
||||
ROM_REGION( 0x8000, "ibios_rom", 0 )
|
||||
ROM_LOAD( "st.ic3", 0x0000, 0x8000, CRC(8880596e) SHA1(ec6d68fc2f51f7d94f496cd72cf898db65324542) )
|
||||
|
||||
ROM_REGION( 0x10, "rp5h01", ROMREGION_ERASE00 )
|
||||
ROM_LOAD( "security.prm", 0x000000, 0x000010, NO_DUMP )
|
||||
ROM_END
|
||||
|
||||
|
||||
|
||||
GAME( 199?, nss, 0, nss, snes, snes_state, snes, ROT0, "Nintendo", "Nintendo Super System BIOS", GAME_IS_BIOS_ROOT )
|
||||
GAME( 1992, nss_actr, nss, nss, snes, snes_state, snes, ROT0, "Enix", "Act Raiser (Nintendo Super System)", GAME_NOT_WORKING | GAME_IMPERFECT_SOUND ) // sound sometimes dies, timing issues
|
||||
GAME( 1992, nss_adam, nss, nss, snes, snes_state, snes, ROT0, "Ocean", "The Addams Family (Nintendo Super System)", GAME_NOT_WORKING | GAME_IMPERFECT_SOUND )
|
||||
|
||||
Loading…
Reference in New Issue
Block a user