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(MESS) palm.c: Reduced tagmap lookups (nw)

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This commit is contained in:
Wilbert Pol 2013-02-14 20:24:00 +00:00
parent 82a539c656
commit c42c219682
1 changed files with 24 additions and 15 deletions
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39
src/mess/drivers/palm.c
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@ -21,11 +21,15 @@ class palm_state : public driver_device
{ {
public: public:
palm_state(const machine_config &mconfig, device_type type, const char *tag) palm_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_maincpu(*this, "maincpu")
m_lsi(*this, MC68328_TAG), , m_lsi(*this, MC68328_TAG)
m_dac(*this, "dac"), , m_dac(*this, "dac")
m_ram(*this, RAM_TAG) , m_ram(*this, RAM_TAG)
, m_io_penx(*this, "PENX")
, m_io_peny(*this, "PENY")
, m_io_penb(*this, "PENB")
, m_io_portd(*this, "PORTD")
{ } { }
required_device<cpu_device> m_maincpu; required_device<cpu_device> m_maincpu;
@ -51,6 +55,11 @@ public:
DECLARE_WRITE16_MEMBER(palm_spim_out); DECLARE_WRITE16_MEMBER(palm_spim_out);
DECLARE_READ16_MEMBER(palm_spim_in); DECLARE_READ16_MEMBER(palm_spim_in);
DECLARE_WRITE8_MEMBER(palm_dac_transition); DECLARE_WRITE8_MEMBER(palm_dac_transition);
required_ioport m_io_penx;
required_ioport m_io_peny;
required_ioport m_io_penb;
required_ioport m_io_portd;
}; };
static offs_t palm_dasm_override(device_t &device, char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, int options); static offs_t palm_dasm_override(device_t &device, char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, int options);
@ -62,7 +71,7 @@ static offs_t palm_dasm_override(device_t &device, char *buffer, offs_t pc, cons
INPUT_CHANGED_MEMBER(palm_state::pen_check) INPUT_CHANGED_MEMBER(palm_state::pen_check)
{ {
UINT8 button = machine().root_device().ioport("PENB")->read(); UINT8 button = m_io_penb->read();
if(button) if(button)
mc68328_set_penirq_line(m_lsi, 1); mc68328_set_penirq_line(m_lsi, 1);
@ -72,7 +81,7 @@ INPUT_CHANGED_MEMBER(palm_state::pen_check)
INPUT_CHANGED_MEMBER(palm_state::button_check) INPUT_CHANGED_MEMBER(palm_state::button_check)
{ {
UINT8 button_state = machine().root_device().ioport("PORTD")->read(); UINT8 button_state = m_io_portd->read();
mc68328_set_port_d_lines(m_lsi, button_state, (int)(FPTR)param); mc68328_set_port_d_lines(m_lsi, button_state, (int)(FPTR)param);
} }
@ -105,8 +114,8 @@ READ16_MEMBER(palm_state::palm_spim_in)
static void palm_spim_exchange( device_t *device ) static void palm_spim_exchange( device_t *device )
{ {
palm_state *state = device->machine().driver_data<palm_state>(); palm_state *state = device->machine().driver_data<palm_state>();
UINT8 x = device->machine().root_device().ioport("PENX")->read(); UINT8 x = state->m_io_penx->read();
UINT8 y = state->ioport("PENY")->read(); UINT8 y = state->m_io_peny->read();
switch( state->m_port_f_latch & 0x0f ) switch( state->m_port_f_latch & 0x0f )
{ {
@ -122,10 +131,10 @@ static void palm_spim_exchange( device_t *device )
void palm_state::machine_start() void palm_state::machine_start()
{ {
address_space &space = machine().device("maincpu")->memory().space(AS_PROGRAM); address_space &space = m_maincpu->space(AS_PROGRAM);
space.install_read_bank (0x000000, machine().device<ram_device>(RAM_TAG)->size() - 1, machine().device<ram_device>(RAM_TAG)->size() - 1, 0, "bank1"); space.install_read_bank (0x000000, m_ram->size() - 1, m_ram->size() - 1, 0, "bank1");
space.install_write_bank(0x000000, machine().device<ram_device>(RAM_TAG)->size() - 1, machine().device<ram_device>(RAM_TAG)->size() - 1, 0, "bank1"); space.install_write_bank(0x000000, m_ram->size() - 1, m_ram->size() - 1, 0, "bank1");
membank("bank1")->set_base(machine().device<ram_device>(RAM_TAG)->pointer()); membank("bank1")->set_base(m_ram->pointer());
save_item(NAME(m_port_f_latch)); save_item(NAME(m_port_f_latch));
save_item(NAME(m_spim_data)); save_item(NAME(m_spim_data));
@ -138,8 +147,8 @@ void palm_state::machine_reset()
{ {
// Copy boot ROM // Copy boot ROM
UINT8* bios = machine().root_device().memregion("bios")->base(); UINT8* bios = machine().root_device().memregion("bios")->base();
memset(machine().device<ram_device>(RAM_TAG)->pointer(), 0, machine().device<ram_device>(RAM_TAG)->size()); memset(m_ram->pointer(), 0, m_ram->size());
memcpy(machine().device<ram_device>(RAM_TAG)->pointer(), bios, 0x20000); memcpy(m_ram->pointer(), bios, 0x20000);
m_maincpu->reset(); m_maincpu->reset();
} }