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temp fixed regression in superfx due to changes done yesterday. the code is not optimal but it's going to be rewritten soon anyway...

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This commit is contained in:
Fabio Priuli 2013-03-07 20:09:03 +00:00
parent 702d921e5e
commit baf71aefeb
1 changed files with 65 additions and 38 deletions
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103
src/mess/drivers/snes.c
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@ -55,6 +55,8 @@ public:
DECLARE_READ8_MEMBER( snes_hi_r );
DECLARE_WRITE8_MEMBER( snes_lo_w );
DECLARE_WRITE8_MEMBER( snes_hi_w );
DECLARE_READ8_MEMBER( sfx_r );
DECLARE_WRITE8_MEMBER( sfx_w );
DECLARE_READ8_MEMBER( superfx_r_bank1 );
DECLARE_READ8_MEMBER( superfx_r_bank2 );
DECLARE_READ8_MEMBER( superfx_r_bank3 );
@ -137,6 +139,63 @@ void snes_console_state::st010_write_ram(UINT16 addr, UINT8 data)
}
READ8_MEMBER( snes_console_state::sfx_r )
{
UINT16 address = offset & 0xffff;
if (offset < 0x400000)
{
if (address < 0x2000)
return space.read_byte(0x7e0000 + address);
else if (address < 0x6000)
{
if (address >= 0x3000 && address < 0x3300)
return superfx_mmio_read(m_superfx, address);
else
return snes_r_io(space, address);
}
else if (address < 0x8000)
return superfx_access_ram(m_superfx) ? m_sfx_ram[offset & 0x1fff] : snes_open_bus_r(space, 0);
else
return snes_ram[offset];
}
else if (offset < 0x600000)
{
if (superfx_access_rom(m_superfx))
return snes_ram[offset];
else
{
static const UINT8 sfx_data[16] = {
0x00, 0x01, 0x00, 0x01, 0x04, 0x01, 0x00, 0x01,
0x00, 0x01, 0x08, 0x01, 0x00, 0x01, 0x0c, 0x01,
};
return sfx_data[offset & 0x0f];
}
}
else
return superfx_access_ram(m_superfx) ? m_sfx_ram[offset & 0xfffff] : snes_open_bus_r(space, 0);
}
WRITE8_MEMBER( snes_console_state::sfx_w )
{
UINT16 address = offset & 0xffff;
if (offset < 0x400000)
{
if (address < 0x2000)
space.write_byte(0x7e0000 + address, data);
else if (address < 0x6000)
{
if (address >= 0x3000 && address < 0x3300)
superfx_mmio_write(m_superfx, address, data);
else
snes_w_io(space, address, data);
}
else if (address < 0x8000)
m_sfx_ram[offset & 0x1fff] = data;
}
else if (offset >= 0x600000)
m_sfx_ram[offset & 0xfffff] = data;
}
READ8_MEMBER( snes_console_state::snes_lo_r )
{
UINT16 address = offset & 0xffff;
@ -192,7 +251,7 @@ READ8_MEMBER( snes_console_state::snes_lo_r )
&& offset >= 0x500000 && offset < 0x510000)
return spc7110_mmio_read(space, 0x4800);
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL)
return space.read_byte(offset + 0x800000); // [00-7f] same as [80-ff]
return sfx_r(space, offset, 0xff);
// base cart access
return snes_r_bank1(space, offset, 0xff);
@ -254,31 +313,8 @@ READ8_MEMBER( snes_console_state::snes_hi_r )
if ((m_has_addon_chip == HAS_SPC7110 || m_has_addon_chip == HAS_SPC7110_RTC)
&& offset >= 0x500000)
return spc7110_bank7_read(space, offset - 0x400000);
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL
&& offset < 0x400000)
{
if (address >= 0x3000 && address < 0x3300)
return superfx_mmio_read(m_superfx, address);
if (address >= 0x6000 && address < 0x8000)
return superfx_access_ram(m_superfx) ? m_sfx_ram[offset & 0x1fff] : snes_open_bus_r(space, 0);
}
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL
&& offset >= 0x400000 && offset < 0x600000)
{
if (superfx_access_rom(m_superfx))
return snes_ram[offset];
else
{
static const UINT8 sfx_data[16] = {
0x00, 0x01, 0x00, 0x01, 0x04, 0x01, 0x00, 0x01,
0x00, 0x01, 0x08, 0x01, 0x00, 0x01, 0x0c, 0x01,
};
return sfx_data[offset & 0x0f];
}
}
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL
&& offset >= 0x600000)
return superfx_access_ram(m_superfx) ? m_sfx_ram[offset & 0xfffff] : snes_open_bus_r(space, 0);
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL)
return sfx_r(space, offset, 0xff);
// base cart access
return snes_r_bank2(space, offset, 0xff);
@ -352,7 +388,7 @@ WRITE8_MEMBER( snes_console_state::snes_lo_w )
{ spc7110_ram_write(address & 0x1fff, data); return; }
}
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL)
{ space.write_byte(offset + 0x800000, data); return; } // [00-7f] same as [80-ff]
{ sfx_w(space, offset, data, 0xff); return; }
// base cart access
snes_w_bank1(space, offset, data, 0xff);
@ -425,17 +461,8 @@ WRITE8_MEMBER( snes_console_state::snes_hi_w )
if (offset >= 0x300000 && offset < 0x310000 && address >= 0x6000 && address < 0x8000)
{ spc7110_ram_write(address & 0x1fff, data); return; }
}
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL
&& offset < 0x400000)
{
if (address >= 0x3000 && address < 0x3300)
{ superfx_mmio_write(m_superfx, address, data); return; }
if (address >= 0x6000 && address < 0x8000)
{ m_sfx_ram[offset & 0x1fff] = data; return; }
}
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL
&& offset >= 0x600000)
{ m_sfx_ram[offset & 0xfffff] = data; return; }
if (m_has_addon_chip == HAS_SUPERFX && m_superfx != NULL)
{ sfx_w(space, offset, data, 0xff); return; }
// base cart access
snes_w_bank2(space, offset, data, 0xff);