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Added idle skip

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This commit is contained in:
Angelo Salese 2012-02-03 14:41:46 +00:00
parent 340eb43dd4
commit f50762b727
1 changed files with 26 additions and 1 deletions
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27
src/mame/drivers/calchase.c
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@ -131,7 +131,9 @@ class calchase_state : public driver_device
{
public:
calchase_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")
{ }
UINT32 *m_bios_ram;
int m_dma_channel;
@ -145,6 +147,9 @@ public:
device_t *m_pic8259_2;
device_t *m_dma8237_1;
device_t *m_dma8237_2;
UINT32 m_idle_skip_ram;
required_device<cpu_device> m_maincpu;
};
@ -810,6 +815,24 @@ static MACHINE_CONFIG_START( calchase, calchase_state )
MACHINE_CONFIG_END
static READ32_HANDLER( calchase_idle_skip_r )
{
calchase_state *state = space->machine().driver_data<calchase_state>();
if(cpu_get_pc(&space->device())==0x1406f48)
device_spin_until_interrupt(state->m_maincpu);
return state->m_idle_skip_ram;
}
static WRITE32_HANDLER( calchase_idle_skip_w )
{
calchase_state *state = space->machine().driver_data<calchase_state>();
COMBINE_DATA(&state->m_idle_skip_ram);
}
static DRIVER_INIT( calchase )
{
calchase_state *state = machine.driver_data<calchase_state>();
@ -822,6 +845,8 @@ static DRIVER_INIT( calchase )
intel82439tx_init(machine);
kbdc8042_init(machine, &at8042);
machine.device("maincpu")->memory().space(AS_PROGRAM)->install_legacy_readwrite_handler(0x3f0b160, 0x3f0b163, FUNC(calchase_idle_skip_r), FUNC(calchase_idle_skip_w));
}
ROM_START( calchase )