From df564067dd6694a869f6b736bb37fcb19cfbc7fd Mon Sep 17 00:00:00 2001 From: Luca Elia Date: Sun, 1 Mar 2015 22:18:19 +0100 Subject: [PATCH] Emulate sound latch protection in brickzn [Luca Elia, system11] --- src/mame/drivers/suna8.c | 43 +++++++++++++++++++++++++++++++-------- src/mame/includes/suna8.h | 4 +++- 2 files changed, 38 insertions(+), 9 deletions(-) diff --git a/src/mame/drivers/suna8.c b/src/mame/drivers/suna8.c index 2a3c1b95c88..63c946139b6 100644 --- a/src/mame/drivers/suna8.c +++ b/src/mame/drivers/suna8.c @@ -678,7 +678,7 @@ READ8_MEMBER(suna8_state::brickzn_cheats_r) ---- ---0 Palette RAM Bank - C0A0: Sound Latch + C0A0: Sound Latch (optionally scrambled) C0A0: 7654 3--- @@ -699,9 +699,20 @@ WRITE8_MEMBER(suna8_state::brickzn_multi_w) } else if ((m_protection_val & 0xfc) == 0x90) { - soundlatch_byte_w(space, 0, data); + /* + 0d brick hit NO! 25? + 2c side wall hit OK + 3b paddle hit OK + 44 death OK? + 53 death OK? + 56 coin in OK? + 70 monster hit NO? 58? + */ + UINT8 remap = (m_remap_sound ? BITSWAP8(data, 7,6,3,4,5,2,1,0) : data); - logerror("CPU #0 - PC %04X: soundlatch = %02X\n",space.device().safe_pc(),data); + soundlatch_byte_w(space, 0, remap); + + logerror("CPU #0 - PC %04X: soundlatch = %02X (->%02X)\n",space.device().safe_pc(),data,remap); } else if (protselect == 0x04) { @@ -774,6 +785,8 @@ WRITE8_MEMBER(suna8_state::brickzn_prot2_w) else space.install_ram(0xc800, 0xdfff, m_wram); + m_remap_sound = ((m_prot2 ^ data) == 0xf8) ? 1 : 0; + // Select alternate data decryption, see code at 787e: membank("bank1")->set_entry((membank("bank1")->entry() & 0x0f) + ((m_prot2 == (data | 0xdc)) ? 0x10 : 0)); @@ -1527,6 +1540,19 @@ static INPUT_PORTS_START( brickzn ) INPUT_PORTS_END +static INPUT_PORTS_START( brickznv6 ) + PORT_INCLUDE(brickzn) + + PORT_MODIFY("DSW2") // DSW 2 - $c103 + PORT_DIPNAME( 0x18, 0x10, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW2:4,5") + PORT_DIPSETTING( 0x18, "None" ) + PORT_DIPSETTING( 0x10, "10K" ) + PORT_DIPSETTING( 0x08, "30K" ) + PORT_DIPSETTING( 0x00, "50K" ) + PORT_DIPNAME( 0x20, 0x20, "Display" ) PORT_DIPLOCATION("SW2:6") + PORT_DIPSETTING( 0x00, DEF_STR( No ) ) + PORT_DIPSETTING( 0x20, DEF_STR( Yes ) ) +INPUT_PORTS_END /*************************************************************************** Hard Head 2 @@ -1917,6 +1943,7 @@ MACHINE_CONFIG_END MACHINE_RESET_MEMBER(suna8_state,brickzn) { m_protection_val = m_prot2 = m_prot2_prev = 0xff; + m_remap_sound = 0; membank("bank1")->set_entry(0); } @@ -1928,7 +1955,7 @@ static MACHINE_CONFIG_START( brickzn, suna8_state ) MCFG_CPU_IO_MAP(brickzn_io_map) MCFG_CPU_VBLANK_INT_DRIVER("screen", suna8_state, irq0_line_hold) // nmi breaks ramtest but is needed! - MCFG_CPU_ADD("audiocpu", Z80, SUNA8_MASTER_CLOCK / 4) /* Z0840006PSC */ + MCFG_CPU_ADD("audiocpu", Z80, SUNA8_MASTER_CLOCK / 8) /* Z0840006PSC - 3MHz better matches the tempo in the video */ MCFG_CPU_PROGRAM_MAP(brickzn_sound_map) MCFG_CPU_ADD("pcm", Z80, SUNA8_MASTER_CLOCK / 4) /* Z0840006PSC */ @@ -2882,7 +2909,7 @@ GAME( 1990, starfigh, 0, starfigh, starfigh, suna8_state, starfigh, ROT GAME( 1991, hardhea2, 0, hardhea2, hardhea2, suna8_state, hardhea2, ROT0, "SunA", "Hard Head 2 (v2.0)", 0 ) // is meant to sound like this https://www.youtube.com/watch?v=yfU1C7A3iZI (recorded from v6.0, Joystick version) -GAME( 1992, brickzn, 0, brickzn, brickzn, suna8_state, brickzn, ROT90, "SunA", "Brick Zone (v6.0, Joystick)", GAME_IMPERFECT_SOUND ) -GAME( 1992, brickznv5, brickzn, brickzn, brickzn, suna8_state, brickznv5, ROT90, "SunA", "Brick Zone (v5.0, Joystick)", GAME_IMPERFECT_SOUND ) -GAME( 1992, brickznv4, brickzn, brickzn, brickzn, suna8_state, brickznv4, ROT90, "SunA", "Brick Zone (v4.0, Spinner)", GAME_IMPERFECT_SOUND ) -GAME( 1992, brickzn11, brickzn, brickzn, brickzn, suna8_state, brickzn11, ROT90, "SunA", "Brick Zone (v1.1)", GAME_NOT_WORKING ) +GAME( 1992, brickzn, 0, brickzn, brickznv6,suna8_state, brickzn, ROT90, "SunA", "Brick Zone (v6.0, Joystick)", 0 ) +GAME( 1992, brickznv5, brickzn, brickzn, brickzn, suna8_state, brickznv5, ROT90, "SunA", "Brick Zone (v5.0, Joystick)", 0 ) +GAME( 1992, brickznv4, brickzn, brickzn, brickzn, suna8_state, brickznv4, ROT90, "SunA", "Brick Zone (v4.0, Spinner)", 0 ) +GAME( 1992, brickzn11, brickzn, brickzn, brickzn, suna8_state, brickzn11, ROT90, "SunA", "Brick Zone (v1.1)", GAME_NOT_WORKING ) diff --git a/src/mame/includes/suna8.h b/src/mame/includes/suna8.h index 57197dd6ad9..ac9fb8c41c9 100644 --- a/src/mame/includes/suna8.h +++ b/src/mame/includes/suna8.h @@ -18,7 +18,8 @@ public: m_screen(*this, "screen"), m_palette(*this, "palette"), - m_prot_opcode_toggle(0) + m_prot_opcode_toggle(0), + m_remap_sound(0) { } required_device m_maincpu; @@ -45,6 +46,7 @@ public: UINT8 m_spritebank_latch; UINT8 m_write_disable; UINT8 m_prot_opcode_toggle; + UINT8 m_remap_sound; UINT8* m_decrypt; enum GFXBANK_TYPE_T