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Added WAI operation

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Signed-off-by: Mike Naberezny <mike@naberezny.com>
This commit is contained in:
Oscar Lindberg 2009-04-13 08:59:58 +08:00 committed by Mike Naberezny
parent cba7990d29
commit af11a3722a
1 changed files with 20 additions and 7 deletions
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27
src/py65/devices/mpu65c02.py
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@ -1,15 +1,24 @@
from py65.devices.mpu6502 import MPU as NMOS6502 from py65.devices import mpu6502
from py65.utils.devices import make_instruction_decorator from py65.utils.devices import make_instruction_decorator
class MPU(NMOS6502): class MPU(mpu6502.MPU):
def __init__(self, *args, **kwargs): def __init__(self, *args, **kwargs):
NMOS6502.__init__(self, *args, **kwargs) mpu6502.MPU.__init__(self, *args, **kwargs)
self.name = '65C02' self.name = '65C02'
self.waiting = False
instruct = NMOS6502.instruct[:] def step(self):
cycletime = NMOS6502.cycletime[:] if self.waiting:
extracycles = NMOS6502.extracycles[:] self.processorCycles += 1
disassemble = NMOS6502.disassemble[:] else:
mpu6502.MPU.step(self)
return self
# Make copies of the lists
instruct = mpu6502.MPU.instruct[:]
cycletime = mpu6502.MPU.cycletime[:]
extracycles = mpu6502.MPU.extracycles[:]
disassemble = mpu6502.MPU.disassemble[:]
instruction = make_instruction_decorator(instruct, disassemble, instruction = make_instruction_decorator(instruct, disassemble,
cycletime, extracycles) cycletime, extracycles)
@ -243,6 +252,10 @@ class MPU(NMOS6502):
def inst_0x80(self): def inst_0x80(self):
self.BranchRelAddr() self.BranchRelAddr()
@instruction(name="WAI", mode='imp', cycles=3)
def inst_0xCB(self):
self.waiting = True
@instruction(name="SBC", mode="zpi", cycles=5) @instruction(name="SBC", mode="zpi", cycles=5)
def inst_0xf2(self): def inst_0xf2(self):
self.opSBC(self.ZeroPageIndirectAddr) self.opSBC(self.ZeroPageIndirectAddr)