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mpu4hw.c: reduced tagmap lookups (nw)

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C:\mame>mame64d0159 m4twintm -str 2 -w
533317 tagmap lookups

C:\mame>mame64d m4twintm -str 2 -w
6464 tagmap lookups
This commit is contained in:
Ivan Vangelista 2015-03-04 19:10:36 +01:00
parent 35cdc22c80
commit 655bd1ca31
1 changed files with 3 additions and 21 deletions
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24
src/mame/drivers/mpu4hw.c
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@ -1388,24 +1388,6 @@ and t1 is the initial value in clock 1.
*/ */
//O3 -> G1 O1 -> c2 o2 -> c1 //O3 -> G1 O1 -> c2 o2 -> c1
WRITE8_MEMBER(mpu4_state::ic3ss_o1_callback)
{
device_t * device = machine().device("ptm_ic3ss");
downcast<ptm6840_device *>(device)->set_c2(data);
}
WRITE8_MEMBER(mpu4_state::ic3ss_o2_callback)//Generates 'beep' tone
{
device_t * device = machine().device("ptm_ic3ss");
downcast<ptm6840_device *>(device)->set_c1(data);//?
}
WRITE8_MEMBER(mpu4_state::ic3ss_o3_callback)
{
//downcast<ptm6840_device *>(device)->set_g1(data); /* this output is the clock for timer1 */
}
/* This is a bit of a cheat - since we don't clock into the OKI chip directly, we need to /* This is a bit of a cheat - since we don't clock into the OKI chip directly, we need to
calculate the oscillation frequency in advance. We're running the timer for interrupt calculate the oscillation frequency in advance. We're running the timer for interrupt
@ -2661,9 +2643,9 @@ MACHINE_CONFIG_FRAGMENT( mpu4_common2 )
MCFG_DEVICE_ADD("ptm_ic3ss", PTM6840, 0) MCFG_DEVICE_ADD("ptm_ic3ss", PTM6840, 0)
MCFG_PTM6840_INTERNAL_CLOCK(MPU4_MASTER_CLOCK / 4) MCFG_PTM6840_INTERNAL_CLOCK(MPU4_MASTER_CLOCK / 4)
MCFG_PTM6840_EXTERNAL_CLOCKS(0, 0, 0) MCFG_PTM6840_EXTERNAL_CLOCKS(0, 0, 0)
MCFG_PTM6840_OUT0_CB(WRITE8(mpu4_state, ic3ss_o1_callback)) MCFG_PTM6840_OUT0_CB(DEVWRITELINE("ptm_ic3ss", ptm6840_device, set_c2))
MCFG_PTM6840_OUT1_CB(WRITE8(mpu4_state, ic3ss_o2_callback)) MCFG_PTM6840_OUT1_CB(DEVWRITELINE("ptm_ic3ss", ptm6840_device, set_c1))
MCFG_PTM6840_OUT2_CB(WRITE8(mpu4_state, ic3ss_o3_callback)) //MCFG_PTM6840_OUT2_CB(DEVWRITELINE("ptm_ic3ss", ptm6840_device, set_g1))
//MCFG_PTM6840_IRQ_CB(WRITELINE(mpu4_state, cpu1_ptm_irq)) //MCFG_PTM6840_IRQ_CB(WRITELINE(mpu4_state, cpu1_ptm_irq))
MCFG_DEVICE_ADD("pia_ic4ss", PIA6821, 0) MCFG_DEVICE_ADD("pia_ic4ss", PIA6821, 0)