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emulated the bitswaps protection for lhb2 and vbowl/vbowlj instead of patching rom [iq_132]

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David Haywood 2013-01-04 02:32:30 +00:00
parent a31753f9b1
commit 707d7a6160
1 changed files with 155 additions and 34 deletions
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189
src/mame/drivers/igs011.c
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@ -38,7 +38,7 @@ Year + Game PCB Sound Chips
To do:
- Implement the I/O part of IGS003 as an 8255
- IGS003 parametric bitswap protection in lhb2, nkishusp, vbowl (instead of patching the roms)
- IGS003 parametric bitswap protection in nkishusp (instead of patching the roms)
- Interrupt controller at 838000 or a38000 (there's a preliminary implementation for lhb)
- A few graphical bugs
@ -109,6 +109,13 @@ public:
UINT16 m_lhb_irq_enable;
blitter_t m_blitter;
UINT16 m_igs003_prot_hold;
UINT8 m_igs003_prot_x;
UINT8 m_igs003_prot_y;
UINT8 m_igs003_prot_z;
UINT8 m_igs003_prot_h1;
UINT8 m_igs003_prot_h2;
DECLARE_WRITE16_MEMBER(igs011_priority_w);
DECLARE_READ16_MEMBER(igs011_layers_r);
DECLARE_WRITE16_MEMBER(igs011_layers_w);
@ -1508,6 +1515,62 @@ WRITE16_MEMBER(igs011_state::lhb2_igs003_w)
// popmessage("oki %02x",m_lhb2_pen_hi & 0x08);
break;
case 0x40:
m_igs003_prot_h2 = m_igs003_prot_h1;
m_igs003_prot_h1 = data;
break;
case 0x41: // data written here is the same as reg 40
case 0x42:
case 0x43:
case 0x44:
case 0x45:
case 0x46:
case 0x47:
break;
case 0x48:
m_igs003_prot_x = 0; // not 100% sure about these
if(!(m_igs003_prot_h2 & 0x0a)) m_igs003_prot_x |= 0x08; // $100de6 - not used?
if(!(m_igs003_prot_h2 & 0x90)) m_igs003_prot_x |= 0x04; // $100de7 - not used?
if(!(m_igs003_prot_h1 & 0x02)) m_igs003_prot_x |= 0x02; // $100de8
if(!(m_igs003_prot_h1 & 0x80)) m_igs003_prot_x |= 0x01; // $100de9
break;
case 0x50: // reset?
m_igs003_prot_hold = 0;
break;
case 0x80:
case 0x81:
case 0x82:
case 0x83:
case 0x84:
case 0x85:
case 0x86:
case 0x87:
{
UINT16 old;
m_igs003_prot_y = m_igs003_reg[0] & 0x07;
m_igs003_prot_z = data;
old = m_igs003_prot_hold;
m_igs003_prot_hold <<= 1;
m_igs003_prot_hold |= BIT(old, 15); // rotate
m_igs003_prot_hold ^= 0x2bad;
m_igs003_prot_hold ^= BIT(m_igs003_prot_z, m_igs003_prot_y);
m_igs003_prot_hold ^= BIT(old, 12);
m_igs003_prot_hold ^= BIT(old, 8);
m_igs003_prot_hold ^= BIT(old, 3);
m_igs003_prot_hold ^= BIT(m_igs003_prot_x, 0) << 4;
m_igs003_prot_hold ^= BIT(m_igs003_prot_x, 1) << 6;
m_igs003_prot_hold ^= BIT(m_igs003_prot_x, 2) << 10;
m_igs003_prot_hold ^= BIT(m_igs003_prot_x, 3) << 12;
}
break;
default:
logerror("%06x: warning, writing to igs003_reg %02x = %02x\n", space.device().safe_pc(), m_igs003_reg[0], data);
}
@ -1527,8 +1590,8 @@ READ16_MEMBER(igs011_state::lhb2_igs003_r)
logerror("%06x: warning, reading with igs003_reg = %02x\n", space.device().safe_pc(), m_igs003_reg[0]);
break;
// case 0x03:
// return 0xff; // parametric bitswaps?
case 0x03:
return BITSWAP16(m_igs003_prot_hold, 14,11,8,6,4,3,1,0, 5,2,9,7,10,13,12,15) & 0xff;
// Protection:
// 0544FE: 20 21 22 24 25 26 27 28 2A 2B 2C 2D 2E 30 31 32 33 34
@ -1725,6 +1788,62 @@ WRITE16_MEMBER(igs011_state::vbowl_igs003_w)
break;
case 0x40:
m_igs003_prot_h2 = m_igs003_prot_h1;
m_igs003_prot_h1 = data;
break;
case 0x41: // repeat data written at $40
case 0x42:
case 0x43:
case 0x44:
case 0x45:
case 0x46:
case 0x47:
break;
case 0x48:
m_igs003_prot_x = 0; // not 100% sure about these
if(!(m_igs003_prot_h2 & 0x0a)) m_igs003_prot_x |= 0x08;
if(!(m_igs003_prot_h2 & 0x90)) m_igs003_prot_x |= 0x04;
if(!(m_igs003_prot_h1 & 0x02)) m_igs003_prot_x |= 0x02;
if(!(m_igs003_prot_h1 & 0x80)) m_igs003_prot_x |= 0x01;
break;
case 0x50: // reset?
m_igs003_prot_hold = 0;
break;
case 0x80:
case 0x81:
case 0x82:
case 0x83:
case 0x84:
case 0x85:
case 0x86:
case 0x87:
{
UINT16 old;
m_igs003_prot_y = m_igs003_reg[0] & 0x07;
m_igs003_prot_z = data;
old = m_igs003_prot_hold;
m_igs003_prot_hold <<= 1;
m_igs003_prot_hold ^= BIT(old, 15); // rotate
m_igs003_prot_hold ^= 0x2bad;
m_igs003_prot_hold ^= BIT(old, 5);
m_igs003_prot_hold ^= BIT(old, 8);
m_igs003_prot_hold ^= BIT(old, 10);
m_igs003_prot_hold ^= BIT(m_igs003_prot_z, m_igs003_prot_y);
m_igs003_prot_hold ^= BIT(m_igs003_prot_x, 0) << 4;
m_igs003_prot_hold ^= BIT(m_igs003_prot_x, 1) << 6;
m_igs003_prot_hold ^= BIT(m_igs003_prot_x, 2) << 10;
m_igs003_prot_hold ^= BIT(m_igs003_prot_x, 3) << 12;
}
break;
default:
// popmessage("igs003 %x <- %04x",m_igs003_reg[0],data);
logerror("%06x: warning, writing to igs003_reg %02x = %02x\n", space.device().safe_pc(), m_igs003_reg[0], data);
@ -1737,8 +1856,8 @@ READ16_MEMBER(igs011_state::vbowl_igs003_r)
case 0x00: return ioport("IN0")->read();
case 0x01: return ioport("IN1")->read();
// case 0x03:
// return 0xff; // parametric bitswaps?
case 0x03:
return BITSWAP16(m_igs003_prot_hold, 14,11,8,6,4,3,1,0, 5,2,9,7,10,13,12,15) & 0xff;
case 0x20: return 0x49;
case 0x21: return 0x47;
@ -2072,25 +2191,25 @@ DRIVER_INIT_MEMBER(igs011_state,wlcc)
DRIVER_INIT_MEMBER(igs011_state,lhb2)
{
UINT16 *rom = (UINT16 *) machine().root_device().memregion("maincpu")->base();
// UINT16 *rom = (UINT16 *) machine().root_device().memregion("maincpu")->base();
lhb2_decrypt(machine());
lhb2_decrypt_gfx(machine());
// PROTECTION CHECKS
rom[0x034f4/2] = 0x4e71; // 0034F4: 660E bne 3504 (rom test, fills palette with white otherwise)
rom[0x03502/2] = 0x6032; // 003502: 6732 beq 3536 (rom test, fills palette with white otherwise)
rom[0x1afea/2] = 0x6034; // 01AFEA: 6734 beq 1b020 (fills palette with black otherwise)
// rom[0x24b8a/2] = 0x6036; // 024B8A: 6736 beq 24bc2 (fills palette with green otherwise)
// rom[0x29ef8/2] = 0x6036; // 029EF8: 6736 beq 29f30 (fills palette with red otherwise)
// rom[0x2e69c/2] = 0x6036; // 02E69C: 6736 beq 2e6d4 (fills palette with green otherwise)
// rom[0x2fe96/2] = 0x6036; // 02FE96: 6736 beq 2fece (fills palette with red otherwise)
// rom[0x325da/2] = 0x6036; // 0325DA: 6736 beq 32612 (fills palette with green otherwise)
rom[0x3d80a/2] = 0x6034; // 03D80A: 6734 beq 3d840 (fills palette with black otherwise)
// rom[0x3ed80/2] = 0x6036; // 03ED80: 6736 beq 3edb8 (fills palette with red otherwise)
rom[0x41d72/2] = 0x6034; // 041D72: 6734 beq 41da8 (fills palette with black otherwise)
rom[0x44834/2] = 0x6034; // 044834: 6734 beq 4486a (fills palette with black otherwise)
/*
// PROTECTION CHECKS
rom[0x034f4/2] = 0x4e71; // 0034F4: 660E bne 3504 (rom test, fills palette with white otherwise)
rom[0x03502/2] = 0x6032; // 003502: 6732 beq 3536 (rom test, fills palette with white otherwise)
rom[0x1afea/2] = 0x6034; // 01AFEA: 6734 beq 1b020 (fills palette with black otherwise)
rom[0x24b8a/2] = 0x6036; // 024B8A: 6736 beq 24bc2 (fills palette with green otherwise)
rom[0x29ef8/2] = 0x6036; // 029EF8: 6736 beq 29f30 (fills palette with red otherwise)
rom[0x2e69c/2] = 0x6036; // 02E69C: 6736 beq 2e6d4 (fills palette with green otherwise)
rom[0x2fe96/2] = 0x6036; // 02FE96: 6736 beq 2fece (fills palette with red otherwise)
rom[0x325da/2] = 0x6036; // 0325DA: 6736 beq 32612 (fills palette with green otherwise)
rom[0x3d80a/2] = 0x6034; // 03D80A: 6734 beq 3d840 (fills palette with black otherwise)
rom[0x3ed80/2] = 0x6036; // 03ED80: 6736 beq 3edb8 (fills palette with red otherwise)
rom[0x41d72/2] = 0x6034; // 041D72: 6734 beq 41da8 (fills palette with black otherwise)
rom[0x44834/2] = 0x6034; // 044834: 6734 beq 4486a (fills palette with black otherwise)
*/
}
DRIVER_INIT_MEMBER(igs011_state,vbowl)
@ -2109,18 +2228,19 @@ DRIVER_INIT_MEMBER(igs011_state,vbowl)
// Patch the bad dump so that it doesn't reboot at the end of a game (the patched value is from vbowlj)
rom[0x080e0/2] = 0xe549; // 0080E0: 0449 dc.w $0449; ILLEGAL
// PROTECTION CHECKS
// rom[0x03764/2] = 0x4e75; // 003764: 4E56 0000 link A6, #$0
rom[0x173ee/2] = 0x600c; // 0173EE: 670C beq $173fc
rom[0x1e6e6/2] = 0x600c; // 01E6E6: 670C beq $1e6f4
rom[0x1f7ce/2] = 0x600c; // 01F7CE: 670C beq $1f7dc
/*
// PROTECTION CHECKS
rom[0x03764/2] = 0x4e75; // 003764: 4E56 0000 link A6, #$0
rom[0x173ee/2] = 0x600c; // 0173EE: 670C beq $173fc
rom[0x1e6e6/2] = 0x600c; // 01E6E6: 670C beq $1e6f4
rom[0x1f7ce/2] = 0x600c; // 01F7CE: 670C beq $1f7dc
*/
}
DRIVER_INIT_MEMBER(igs011_state,vbowlj)
{
UINT16 *rom = (UINT16 *) machine().root_device().memregion("maincpu")->base();
// UINT16 *rom = (UINT16 *) machine().root_device().memregion("maincpu")->base();
UINT8 *gfx = (UINT8 *) machine().root_device().memregion("blitter")->base();
int i;
@ -2131,12 +2251,13 @@ DRIVER_INIT_MEMBER(igs011_state,vbowlj)
gfx[i * 2 + 1] = (gfx[i] & 0xf0) >> 4;
gfx[i * 2 + 0] = (gfx[i] & 0x0f) >> 0;
}
// PROTECTION CHECKS
// rom[0x37b4/2] = 0x4e75; // 0037B4: 4E56 0000 link A6, #$0
rom[0x17720/2] = 0x600c; // 017720: 670C beq 1772e
rom[0x1e6e6/2] = 0x600c; // 01E6E6: 670C beq $1e6f4
rom[0x1f7c8/2] = 0x600c; // 01F7C8: 670C beq 1f7d6
/*
// PROTECTION CHECKS
rom[0x37b4/2] = 0x4e75; // 0037B4: 4E56 0000 link A6, #$0
rom[0x17720/2] = 0x600c; // 017720: 670C beq 1772e
rom[0x1e6e6/2] = 0x600c; // 01E6E6: 670C beq $1e6f4
rom[0x1f7c8/2] = 0x600c; // 01F7C8: 670C beq 1f7d6
*/
}