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(MESS) megadriv.c: fixed crash in the debugger due to access beyond end of the rom. nw.

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This commit is contained in:
Fabio Priuli 2013-04-24 09:12:40 +00:00
parent 4715c52f52
commit 270c089dda
1 changed files with 87 additions and 25 deletions
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112
src/mess/machine/md_rom.c
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@ -527,13 +527,9 @@ READ16_MEMBER(md_rom_cm2in1_device::read)
READ16_MEMBER(md_rom_mcpirate_device::read)
{
if (offset < 0x400000/2)
{
return m_rom[offset + (m_bank * 0x10000)/2];
}
return m_rom[(((m_bank * 0x10000) + (offset << 1)) & (m_rom_size - 1))/2];
else
{
return read(space, offset - 0x400000/2, 0xffff);
}
}
WRITE16_MEMBER(md_rom_mcpirate_device::write_a13)
@ -623,8 +619,12 @@ READ16_MEMBER(md_rom_chinf3_device::read)
}
return 0;
}
return m_rom[offset & 0x1fffff/2];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
WRITE16_MEMBER(md_rom_chinf3_device::write)
@ -650,13 +650,18 @@ WRITE16_MEMBER(md_rom_chinf3_device::write)
READ16_MEMBER(md_rom_elfwor_device::read)
{
/* It returns (0x55 @ 0x400000 OR 0xc9 @ 0x400004) AND (0x0f @ 0x400002 OR 0x18 @ 0x400006).
It is probably best to add handlers for all 4 addresses. */
// It returns (0x55 @ 0x400000 OR 0xc9 @ 0x400004) AND (0x0f @ 0x400002 OR 0x18 @ 0x400006).
// It is probably best to add handlers for all 4 addresses
if (offset == 0x400000/2) return 0x5500;
if (offset == 0x400002/2) return 0x0f00;
if (offset == 0x400004/2) return 0xc900;
if (offset == 0x400006/2) return 0x1800;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
/*-------------------------------------------------
@ -669,7 +674,12 @@ READ16_MEMBER(md_rom_smouse_device::read)
if (offset == 0x400002/2) return 0x0f00;
if (offset == 0x400004/2) return 0xaa00;
if (offset == 0x400006/2) return 0xf000;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
/*-------------------------------------------------
@ -682,7 +692,12 @@ READ16_MEMBER(md_rom_yasech_device::read)
if (offset == 0x400002/2) return 0x9800;
if (offset == 0x400004/2) return 0xc900;
if (offset == 0x400006/2) return 0x1800;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
/*-------------------------------------------------
@ -697,7 +712,12 @@ READ16_MEMBER(md_rom_kof98_device::read)
if (offset == 0x488880/2) return 0xaa00;
if (offset == 0x4a8820/2) return 0x0a00;
if (offset == 0x4f8820/2) return 0x0000;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
/*-------------------------------------------------
@ -720,7 +740,12 @@ READ16_MEMBER(md_rom_lion2_device::read)
{
if (offset == 0x400002/2) return m_prot1_data;
if (offset == 0x400006/2) return m_prot2_data;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
WRITE16_MEMBER(md_rom_lion2_device::write)
@ -756,7 +781,10 @@ READ16_MEMBER(md_rom_lion3_device::read)
return 0;
}
return m_rom[MD_ADDR(offset)];
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
WRITE16_MEMBER(md_rom_lion3_device::write)
@ -815,7 +843,12 @@ READ16_MEMBER(md_rom_mjlov_device::read)
{
if (offset == 0x400000/2) return 0x9000;
if (offset == 0x401000/2) return 0xd300;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
@ -827,7 +860,12 @@ READ16_MEMBER(md_rom_sbubl_device::read)
{
if (offset == 0x400000/2) return 0x5500;
if (offset == 0x400002/2) return 0x0f00;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
/*-------------------------------------------------
@ -839,7 +877,12 @@ READ16_MEMBER(md_rom_soulb_device::read)
if (offset == 0x400002/2) return 0x9800;
if (offset == 0x400004/2) return 0xc900;
if (offset == 0x400006/2) return 0xf000;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
/*-------------------------------------------------
@ -852,7 +895,12 @@ READ16_MEMBER(md_rom_pokestad_device::read)
{
if (offset < 0x100000/2)
return m_rom[MD_POKESTAD_ADDR(offset)];
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
WRITE16_MEMBER(md_rom_pokestad_device::write)
@ -880,8 +928,8 @@ READ16_MEMBER(md_rom_pokea_device::read_a13)
READ16_MEMBER(md_rom_realtec_device::read)
{
if (offset < (m_bank_size * 0x20000)) // two banks of same (variable) size at the bottom of the rom
return m_rom[offset + (m_bank_addr * 0x20000)/2];
return m_rom[(offset & 0x1fff/2) + 0x7e000/2]; // otherwise it accesses the final 8k of the image
return m_rom[MD_ADDR(offset + (m_bank_addr * 0x20000)/2)];
return m_rom[MD_ADDR((offset & 0x1fff/2) + 0x7e000/2)]; // otherwise it accesses the final 8k of the image
}
WRITE16_MEMBER(md_rom_realtec_device::write)
@ -911,7 +959,12 @@ READ16_MEMBER(md_rom_redcl_device::read)
{
if (offset == 0x400000/2) return 0x55 << 8;
if (offset == 0x400004/2) return -0x56 << 8;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
/*-------------------------------------------------
@ -934,7 +987,12 @@ READ16_MEMBER(md_rom_squir_device::read)
{
if ((offset >= 0x400000/2) && (offset < 0x400008/2))
return m_latch;
return m_rom[MD_ADDR(offset)];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
WRITE16_MEMBER(md_rom_squir_device::write)
@ -1133,7 +1191,11 @@ READ16_MEMBER(md_rom_topf_device::read)
if (offset >= 0x60000/2 && offset < 0x68000/2)
return m_rom[offset + (m_bank[2] * 0x110000)/2];
return m_rom[offset];
// non-protection accesses
if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)];
else
return 0xffff;
}
WRITE16_MEMBER(md_rom_topf_device::write)
@ -1163,7 +1225,7 @@ WRITE16_MEMBER(md_rom_topf_device::write)
READ16_MEMBER(md_rom_radica_device::read)
{
return m_rom[m_bank * 0x10000/2 + offset];
return m_rom[(((m_bank * 0x10000) + (offset << 1)) & (m_rom_size - 1))/2];
}
READ16_MEMBER(md_rom_radica_device::read_a13)