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c64.c: MCFG_M6502_DISABLE_DIRECT() for ~3% speedup [Alex Jackson]

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This commit is contained in:
Alex W. Jackson 2014-07-02 06:07:46 +00:00
parent 8c3925686c
commit eea3dca4ad
1 changed files with 3 additions and 0 deletions
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3
src/mess/drivers/c64.c
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@ -1088,6 +1088,7 @@ static MACHINE_CONFIG_START( ntsc, c64_state )
// basic hardware
MCFG_CPU_ADD(M6510_TAG, M6510, XTAL_14_31818MHz/14)
MCFG_CPU_PROGRAM_MAP(c64_mem)
MCFG_M6502_DISABLE_DIRECT() // address decoding is 100% dynamic, no RAM/ROM banks
MCFG_M6510_PORT_CALLBACKS(READ8(c64_state, cpu_r), WRITE8(c64_state, cpu_w))
MCFG_M6510_PORT_PULLS(0x17, 0xc8)
MCFG_QUANTUM_PERFECT_CPU(M6510_TAG)
@ -1243,6 +1244,7 @@ static MACHINE_CONFIG_START( pal, c64_state )
// basic hardware
MCFG_CPU_ADD(M6510_TAG, M6510, XTAL_17_734472MHz/18)
MCFG_CPU_PROGRAM_MAP(c64_mem)
MCFG_M6502_DISABLE_DIRECT() // address decoding is 100% dynamic, no RAM/ROM banks
MCFG_M6510_PORT_CALLBACKS(READ8(c64_state, cpu_r), WRITE8(c64_state, cpu_w))
MCFG_M6510_PORT_PULLS(0x17, 0xc8)
MCFG_QUANTUM_PERFECT_CPU(M6510_TAG)
@ -1376,6 +1378,7 @@ static MACHINE_CONFIG_START( pal_gs, c64gs_state )
// basic hardware
MCFG_CPU_ADD(M6510_TAG, M6510, XTAL_17_734472MHz/18)
MCFG_CPU_PROGRAM_MAP(c64_mem)
MCFG_M6502_DISABLE_DIRECT() // address decoding is 100% dynamic, no RAM/ROM banks
MCFG_M6510_PORT_CALLBACKS(READ8(c64gs_state, cpu_r), WRITE8(c64gs_state, cpu_w))
MCFG_M6510_PORT_PULLS(0x07, 0xc0)
MCFG_QUANTUM_PERFECT_CPU(M6510_TAG)