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taitowlf.c: Reduce tagmap lookups (nw)

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This commit is contained in:
Wilbert Pol 2013-02-11 21:08:32 +00:00
parent d7e1483979
commit b26d2ae6d5
1 changed files with 31 additions and 24 deletions
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55
src/mame/drivers/taitowlf.c
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@ -44,7 +44,17 @@ class taitowlf_state : public driver_device
{
public:
taitowlf_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) { }
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_pit8254(*this, "pit8254")
, m_pic8259_1(*this, "pic8259_1")
, m_pic8259_2(*this, "pic8259_2")
, m_dma8237_1(*this, "dma8237_1")
, m_dma8237_2(*this, "dma8237_2")
, m_region_user1(*this, "user1")
, m_region_user5(*this, "user5")
, m_bank1(*this, "bank1")
{ }
UINT32 *m_bios_ram;
UINT8 m_mxtc_config_reg[256];
@ -53,11 +63,15 @@ public:
UINT8 m_dma_offset[2][4];
UINT8 m_at_pages[0x10];
device_t *m_pit8254;
device_t *m_pic8259_1;
device_t *m_pic8259_2;
device_t *m_dma8237_1;
device_t *m_dma8237_2;
required_device<cpu_device> m_maincpu;
required_device<device_t> m_pit8254;
required_device<device_t> m_pic8259_1;
required_device<device_t> m_pic8259_2;
required_device<device_t> m_dma8237_1;
required_device<device_t> m_dma8237_2;
required_memory_region m_region_user1;
required_memory_region m_region_user5;
required_memory_bank m_bank1;
DECLARE_WRITE32_MEMBER(pnp_config_w);
DECLARE_WRITE32_MEMBER(pnp_data_w);
DECLARE_WRITE32_MEMBER(bios_ram_w);
@ -90,7 +104,7 @@ public:
UINT32 taitowlf_state::screen_update_taitowlf(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
int x,y,count;
const UINT8 *blit_ram = machine().root_device().memregion("user5")->base();
const UINT8 *blit_ram = m_region_user5->base();
bitmap.fill(get_black_pen(machine()), cliprect);
@ -118,14 +132,12 @@ UINT32 taitowlf_state::screen_update_taitowlf(screen_device &screen, bitmap_rgb3
READ8_MEMBER(taitowlf_state::at_dma8237_2_r)
{
device_t *device = machine().device("dma8237_2");
return i8237_r(device, space, offset / 2);
return i8237_r(m_dma8237_2, space, offset / 2);
}
WRITE8_MEMBER(taitowlf_state::at_dma8237_2_w)
{
device_t *device = machine().device("dma8237_2");
i8237_w(device, space, offset / 2, data);
i8237_w(m_dma8237_2, space, offset / 2, data);
}
// Intel 82439TX System Controller (MXTC)
@ -149,11 +161,11 @@ static void mxtc_config_w(device_t *busdevice, device_t *device, int function, i
{
if (data & 0x10) // enable RAM access to region 0xf0000 - 0xfffff
{
state->membank("bank1")->set_base(state->m_bios_ram);
state->m_bank1->set_base(state->m_bios_ram);
}
else // disable RAM access (reads go to BIOS ROM)
{
state->membank("bank1")->set_base(busdevice->machine().root_device().memregion("user1")->base() + 0x30000);
state->m_bank1->set_base(state->m_region_user1->base() + 0x30000);
}
break;
}
@ -383,7 +395,7 @@ WRITE8_MEMBER(taitowlf_state::at_page8_w)
WRITE_LINE_MEMBER(taitowlf_state::pc_dma_hrq_changed)
{
machine().device("maincpu")->execute().set_input_line(INPUT_LINE_HALT, state ? ASSERT_LINE : CLEAR_LINE);
m_maincpu->set_input_line(INPUT_LINE_HALT, state ? ASSERT_LINE : CLEAR_LINE);
/* Assert HLDA */
i8237_hlda_w( m_dma8237_1, state );
@ -540,18 +552,12 @@ IRQ_CALLBACK_MEMBER(taitowlf_state::irq_callback)
void taitowlf_state::machine_start()
{
machine().device("maincpu")->execute().set_irq_acknowledge_callback(device_irq_acknowledge_delegate(FUNC(taitowlf_state::irq_callback),this));
m_pit8254 = machine().device( "pit8254" );
m_pic8259_1 = machine().device( "pic8259_1" );
m_pic8259_2 = machine().device( "pic8259_2" );
m_dma8237_1 = machine().device( "dma8237_1" );
m_dma8237_2 = machine().device( "dma8237_2" );
m_maincpu->set_irq_acknowledge_callback(device_irq_acknowledge_delegate(FUNC(taitowlf_state::irq_callback),this));
}
void taitowlf_state::machine_reset()
{
machine().root_device().membank("bank1")->set_base(machine().root_device().memregion("user1")->base() + 0x30000);
m_bank1->set_base(m_region_user1->base() + 0x30000);
}
@ -563,7 +569,7 @@ void taitowlf_state::machine_reset()
WRITE_LINE_MEMBER(taitowlf_state::taitowlf_pic8259_1_set_int_line)
{
machine().device("maincpu")->execute().set_input_line(0, state ? HOLD_LINE : CLEAR_LINE);
m_maincpu->set_input_line(0, state ? HOLD_LINE : CLEAR_LINE);
}
READ8_MEMBER(taitowlf_state::get_slave_ack)
@ -664,7 +670,8 @@ MACHINE_CONFIG_END
static void set_gate_a20(running_machine &machine, int a20)
{
machine.device("maincpu")->execute().set_input_line(INPUT_LINE_A20, a20);
taitowlf_state *drvstate = machine.driver_data<taitowlf_state>();
drvstate->m_maincpu->set_input_line(INPUT_LINE_A20, a20);
}
static void keyboard_interrupt(running_machine &machine, int state)