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(MESS) gb.c: Reduce tagmap lookups (nw)

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This commit is contained in:
Wilbert Pol 2013-02-09 13:57:36 +00:00
parent 80dbbd9bfd
commit 9f170f27f0
2 changed files with 5 additions and 3 deletions
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6
src/mess/drivers/gb.c
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@ -485,7 +485,7 @@ READ8_MEMBER(gb_state::gb_cart_r)
{ {
if (offset < 0x100) if (offset < 0x100)
{ {
UINT8 *ROM = space.machine().root_device().memregion("maincpu")->base(); UINT8 *ROM = m_region_maincpu->base();
return ROM[offset]; return ROM[offset];
} }
else if (m_cartslot->m_cart) else if (m_cartslot->m_cart)
@ -505,12 +505,12 @@ READ8_MEMBER(gb_state::gbc_cart_r)
{ {
if (offset < 0x100) if (offset < 0x100)
{ {
UINT8 *ROM = space.machine().root_device().memregion("maincpu")->base(); UINT8 *ROM = m_region_maincpu->base();
return ROM[offset]; return ROM[offset];
} }
else if (offset >= 0x200 && offset < 0x900) else if (offset >= 0x200 && offset < 0x900)
{ {
UINT8 *ROM = space.machine().root_device().memregion("maincpu")->base(); UINT8 *ROM = m_region_maincpu->base();
return ROM[offset - 0x100]; return ROM[offset - 0x100];
} }
else if (m_cartslot->m_cart) else if (m_cartslot->m_cart)

2
src/mess/includes/gb.h
View File

@ -113,6 +113,7 @@ public:
: driver_device(mconfig, type, tag) : driver_device(mconfig, type, tag)
, m_cartslot(*this, "gbslot") , m_cartslot(*this, "gbslot")
, m_maincpu(*this, "maincpu") , m_maincpu(*this, "maincpu")
, m_region_maincpu(*this, "maincpu")
, m_rambank(*this, "cgb_ram") , m_rambank(*this, "cgb_ram")
, m_inputs(*this, "INPUTS") , m_inputs(*this, "INPUTS")
{ } { }
@ -207,6 +208,7 @@ public:
protected: protected:
required_device<lr35902_cpu_device> m_maincpu; required_device<lr35902_cpu_device> m_maincpu;
required_memory_region m_region_maincpu;
optional_memory_bank m_rambank; // cgb optional_memory_bank m_rambank; // cgb
required_ioport m_inputs; required_ioport m_inputs;